Lantern Slide Collection | The Cornell Astronomical Society

Lantern Slide Collection

Individual files from the Cornell Astronomical Society's lantern slide collection can be accessed here. Note that this listing should be expected to contain typographical errors, as link text was copied from an archive and has not been proofread. Please contact the Cornell Astronomical Society at [email protected] for access to compressed files.

Asteroids

1936 Delporte Object, Name of Adonis, April 17 1938

800 +- 10, Ia3, Large paragold meteorite

Airplane view of Meteor crater near Winslow Arizona

D5215 Harvard No.XI 1913 Jan 8, Spectrum of Meteor

Distribution of space velocities of 540 Telescopic Meteors. Observed by S.L.Boothroyd. 1931-32

E.F.Coddington. Asteroids 27,16,334, and 170. 1899. Aug 1. Exp 2h

Fire Balls seen through the telescope

Geminid Meteor, ttaken by P.M. Millman with F-2.0, 5cm lense and rotating shutter, 4 breaks per sec. Dec 13, 1936. D.D.O

Harv 5, Central portion of trail lfo Geminid meteorrail shown on Harv No4

Harv 8, Whipples Meteor from Oak Ridge sta. of HCO

Hole from which 110 Tilden meteorite was removed

Hole from which large paragold meteorite was removed

Ia1. Path of the Paragould Meteor

Ia10, Path of meteor of July 25 1929

Ia4, Path of the Tilden Meteor

Ia7. The 46th Tilden Meteorite

Ia8, Hole from whhich 46th Tilden stone was removed

Ia9, Path of Arhie daylight meteor

Iba's meteor, Photographed while searching for asteroids, Both trails probably originated from one body, about 1935

Meteor on Nov 12 1861

Meteor Spectrum XXXIX, taken by P.M.Millman with Camera A Nov 18 1935. Dunlan Obs

Multipule Meteor trail photographed by K. Kubokawa, Nov 7 1934, at the Tokyo Obs

No 288, Yerkes Observatory. Two asteroid trails. Dec 28. 1808. Near the region of Halley'scomet

No. Harv 7, Whipple's Meteor 680 from Cambridge Station of HCO

Percentages of Hyperbolic velocities, for 279 Naked Eye Meteors and 540 tel.met

Radiant Point of Meteors on Nov 28, 1864

Radiant point of Meteors on Oct 20, 1865

Results from whipple's work photographed meteor trials presented to Bloomington meeting AAS. Dec 1937

Results from Whipples work on photographed meteor trails presented at AAS meeting Dec 37

The 110 Tilden Meteorite

Distribution of Space Velocities of 279 Naked eye meteors by E Opik. Fall of 1931

Meteor orbital data

Meteor Spectrum IX, taken by P.M.Millman with Camera A, Dec 15, 1931, Blue Hill Mass

Observed and Computed paths of meteors of July 25, 1929

Results from metero trails photographed at Oak Ridge. vo = velocity if no atmosphere, v_infinity = parabolic velocity, no atm. vh = velocity relative to the sun. vg = velocity if earth had no attraction

University of Toronto, Department of Astronomy, Meteror Spectrum XXIV taken with Camera U on Harvard-Arizona Expoedition, Fev 26, 1933

Table of Asteroidal Meteors

Table of Physical Data of Meteors

Two meteor Trials with Star-Cloud in Scutum. Sobleski. 6in Bruce telescope. Exposure 2h40m April 20 1904

Comets

Biela's Comet. Feb 19 1846

C 49. Cp,et 1908 III, Morehouse,September 30 1908, showing change in 3 hours. Yerkes Observatory 100 Repersentative Slides

C 56. Spectrum of comet Morehouse (1908 III), with objective prism. Yerkes Observatory 100 Repersentative Slides

C8 J Comet 1889 V (Brooks) and companion comets. Drawing by Prof Barnard

C86, Yerkes Observatory. Encke's Comet, shortest period known, 3.3 years Photo by EE Barnard. Oct 29 1914

C87, Yerkes Observatory. Finlay's Comet, period 6.69 years. Nov 14, 1919. Tailless

Comet 1910 II, Halley, September 16-26, 1909. Yerkes Observatory 100 Repersentative Slides

Comet Borelly 1903. Aug 12, July 24, July 23, 5hs

Comet I 1847. Visible at noon on March 30. 1847

Donati's Comet Passing Arcturus, Oct 5, 1858

Donati's Comet. Oct 9 1858

Encke's Comet, Nov 30 1828

Halley's Comet, Oct 14 1898, Distance from earth 225000000 miles. Velocity of approach to earth 31 miles per second

Lick observatory. Spectrogram Comet d1907. June 22 1907

no 568. Diagram showing the passage of the earth through the tail of Halley's comet. May 18 1910. Drawn by E.E. Barnard

No 569, Yerkes Observatory. Comet 1910a, Jan 21..Shows Curved Tail for about 4 degrees. Exposure 12m

No 600, Yerkes Observatory, Halley's Comet 1910 June 6

No 64, Comet III 1860

Orbit of Comet 1 (1866) of the November Meteors

Orbit of Comet and Planets

Orbits of August and Nov meteor showeres. Oribts of Comets III 1862 and I 1866

Telescopic comments with and without neucleus

The Great Comet of 1811

The Great Comet of 1861. on June 30 1861

Yerkes Observatory, C88, Pons-Winnecke comet,June 5 1921, very rapid motion, no tail

Halley's Comet May 28, 1910

Comet Morehouse oct 2 1908, two 3hrs exposures showing thread-like system of new tails

Halley's Comet taken with prismatic camera, Jan 14 1910. THe strongest line is the third cyanogen band l=3884. Coparison star is lambda Tauri

Spectra Comet Gale, 1894. May 9-10

Spectra of Comet 1893. July 13

Spectrum of comet 1895 (Perrine). Dec 8 1895.

Spectrum of Halley's comet. May 3 1910. The fontinous spectrum extends through out the tail, while the knot at the left, due to cyanogen, does not

Winneck's Comet in 1868 (Comet II 1868)

Constellations

Constellation Scorpius - extra focal photograph, showing many stars

Constellations in the Spring Sky

no 655, SC 155, Yerkes Observatory, The Constellation Coma Berenices, Exposure 1-hour

No SC169, Yerkes Observatory, Corona Borealis extra focal images

No. SC172 Constellation Aguriga extra focal contains many more stars than SC168

Photograph of the Pleaides Region, Exposure 4hr. Taken at Goodsell Observatory with 2.5in camera

SC 152 The constellation of Orion, extra-focal. Yerkes Observatory 100 Repersentative Slides

SC 159, Late Summer and fall constellations.Yerkes Observatory

SC 161. The stars of the Big Dipper. extra-focal. Yerkes Observatory 100 Repersentative Slides

SC 161a Stars in the big dipper

SC 163,The constellation Scorpius extra-focal 723. Yerkes Observatory 100 repersentative slides

SC 164, Yerkes Observatory, Constellation Canis Major, Extra Focal

SC 171, Yerkes Observatory, Constellation Leo Major with Mars

SC 174, Yerkes Observatory, Constellation Orion, Extra focal Images of Stars to sixth magnitude

SC 340, No 84, Yerkes Observatory. Pleiades region showing about 30 degrees of sky with stars down to 13th mag. Exposure 2hrs 30 min

SC154, Constellations in the winter sky

SC158, Yerkes Observatory, Early Summer Constellations

SC168 Yerkes Observatory, Constellation Auriga - extra focal images

SC176, Yerkes Observatory, Constellation Taurus, extra focal photograph of the brighter stars

Sky in the region of the vernal equinox. Epoch 1920

The Pleadies Region

Merope in the Pleiades. Exp60in, Ritchey

SC162, Pleiades, Exposure 7hrs. 8 inch refractor of Goodsell Observatory

Yerkes Observatory, no282, Constellation of Orion exposures of 30 and 150 min respectively showing the cumlative effect of light on photographic plates

Constellation of Orion. Exposure 4hrs. Ross-Calvert. Atlas of the Milky Way

Earth

Bomb Craters on Langley Field

Crater of Vesuvius in 1864. From Nasmyth + Carpenter. Plate 1

Harv 9, Zones of Earth's Atmosphere

Electromagnetic windows in the earth's atmosphere

Layers of the Earth

Unlabeled, Possibly Mars

Curve of Deviations

Day vs night on the earth

The earth in the spring solstice, day and night unequal

Eclipses

Light Deflection observed during eclipse 1922

'Heliosarus' prominence at the eclipse of June 8, 1918. Yerkes Observatory 100 repersentative slides

Accessible path of Solar Eclipse of Aug 31, 1932

Corona Eclipse Jan 24, 1925, Taken by JP troys assistant at Cornell U

Corona Jan 24 1925, Photo by Mt. Wilson partly at middletown conn. 6 inch Ross Lens, 15 ft focus. 15sec exposure

Corona June 8, 1918 Goldendale Washington.

Corona, June 8 1918. Goldendale Wash Exp 2s

Corona, Sept 21 1922. Wallad, Exposure 32 s

E orthonon.. Inner Corona Eclipse Jan 24, 1925. Taken at Fuertes Obs with Ross Lens of Lowell Observatory, f=8iinch Exp 0.02 sec. Enlarged 6 diameters

Eclipse camp, June 8 1918

Eclipse Jan 24 1925, Taken by B. Grotta at Tamaque Penn, about 30 miles S of southern bouondary of shadow

Eclipse Jan 24, 1924. Outer Corona photographed at the Fuertes Observatory. Using Ross-Lens of the Lowell Observatory

Eclipse Jan 24, 1925 aken at Fuertes Observatory with Ross Lense, Focal length 8inches, exposure 0.01sec

Eclipse Jan 24, 1925 aken at Fuertes Observatory with Ross Lense, Focal length 8inches, exposure 0.2sec

Eclipse Jan 24, 1925. E.C.Slipher beside instrument used at Fuertes Observatory in photographing outer corona nad coronal spectrum

Eclipse Jan 24, 1925. Taken at Fuertes Obs with Ross lense of Lowell Observatory. Exp 0.01 seconds

Eclipse June 8, 1918, Scientists at the Lick Goldendale Expedition

Eclipse June 8, 1918. Lick obs. Goldendale Eclipse Expedition

Einstein Plate, 1922 Wallad

General Theory of Eclipses

Jeur, India. Solar Corona, Exp 2s. Jan 21 1898

Outer Corona Eclipse Jan 24, 1925. Taken at Fuertes Obs Using Ross lense of Lowell Observatory

Padding Sumatra, Eclipse of 1901. Exp 40s

Photo of Solar Corona, Eclipse Jan 24, 1925, by Frederick Slocum at Van Vleck Observatory in middletown Conn

Prominences, Eclipse of 1893

S200, Total solar eclipse of May 28 1900. Yerkes Observatory 100 Repersentative Slides

S221 Corona, June 8 1918 at Matheson, Colorado. Yerkes Observatory 100 Repersentative Slides

Solar Corona - Floyd Telescope Jeur India. 1898, Jan 21

Spectrographs, Wallad, 1922

Theory of total solar eclipses

Wallace Eclipse Camp, 1922

Yerekes Observatory, No S204, Solar Corona of 1905- composite Drawing. Ap..5,23,130

Yerkes Obs. Variation of Solar Corona with Sunspot period

Yerkes Observatory, 100 repersentative slides. S202, Flash spectrum at solar eclipse of May 28, 1900

Yerkes Observatory, no 49, Eclipse of May 28, 1900. Spectrum of 'flash' taken with concave grating (astrophysical journal vol-12 p307)

Chart showing path of Jan 24 1925 solar eclipse

Diagram of a solar eclipse

Diagram of the solar eclipse of May 28 1900

Diagram of tracks of all solar eclipses from 1919 to 1940. Solide lines denote solar eclipses and dotted lines anular.

Eclipse Jan 24, 1925 shadow across New York City. Aerial Photograph by Fairchild Aerial Surveys

Eclipse Jan 24, 1925. Taken by Miss Sarah Elizabeth Schott Gaucher (class 1927) Gaucher College. Baltimore

Planetary configuration at Eclipse of Jan 24, 1925

Planetary configuration at time of solar eclipse of Aug 31 1932

Planets and Stars in Ecliptic Belt at time of eclipse. Aug 31 1932

Slender Shadows of Moon and Earth

Slender shadows of the eartht and moon

Spectrum of Solar Corona, Eclipse 1918. by V.M. Slipher. Lowell Observatory

Stars and planets in the vicinity of the sun at Eclipse Jan 24, 1925

Theory of annular solar eclipses

Theory of solar and lunar eclipses

Total Eclipse of the Sun, Aug 31 1932, All of data

Tracks of solar eclipses from 1900 to 1910. Solid lines deonote total eclipses and dotted lines annular

Galaxies

Center of Andromeda Nebula. 60in Exp 2hrs, Ritchey

Central part of Messier 33 in the Triangle. 60in reflector. Ritchey. Exp 8hrs. Aug 5,6,7, 1910

Central part of Messier 81, 60in reflectorf. Feb 8, 1910. Exposure 4.25hrs

Central part of Messier 81. by Ritchey 60in reflector. Feb8, 1910. Exposure 4.25 hrs

Central part of sprial nebula M101 in ursa majoris. Exposure 7.5hrs. March 10&11 1910. 60inch reflector. Ritchey

Cosmic Reflector, M81 Ursae Majoris, Exp 4hrs

Edge on Nebula in Virgo, NGC 4762. Lowell Observatory Arizona, photo taken with 40in Reflector

Great Nebula in Andromeda

H.V.24 Comae. 60in Exp 5hrs. G.W.Ritchey

Harvard College Observatory, Large Magellanic Cloud

Image of Whirlpool Galaxy

Large Magellanic Cloud image

Large Magellanic Cloud with clusters

Large Magellanic Cloud

M101 Ursa Majoris,Crossley Reflector

M101. Ursae Majoris. 60i. Exposur 1-2hrs. G.W.Ritchey

M33 Trianguli, Exposure 4hrs, Crossley Relector

M33, Trianguli, 60in, Exposure 1-2hrs. Ritche

M51 in Canes Venatici, Crossley Reflector

Map of Dust and Gas in the milk way

Messier 51. Yerkes 24in, Exposure 1-2 hours, Ritchet

Messier 63, Canum. 60in . Exposure 5hrs. G.W.Ritchey

Messier 64 Comas. Ritchey with 60in reflector. June 5,6,7,8, 1910. 8hrs

Mount Wilson and Palomar Observatories. Sprial Galaxy in Triangulum, central region. M33 200in photograph

Mount Wilson and Palomar Observatories.. P115, Hydra. Cluster of faint extra-galatic neubla.

Mount Wilson Observatory. NGC 147

Mount Wilson Solar Observatory. G9 Sprial Nebula M101. Ursae Majoris. Exposure 7hrs 30min. March 10-11 1910

Mount WilsonObservatory, NGC 135

Nebula NGC 4038. Photo with 40in Reflector by C.O.Lampland. Lowell Observatory

NGC 4214. CanisVenatici. Irregular Nebula. Lowell Obs

NGC 4449. in Lowell Obs in Canis Venatici

NGC 4565. The Nebula HII, 24. Comae Bereneices

NGC 5906. by CO Lampland

NGC 822, Mount Wilson Observatory

NNGC 2683, Lowell Observatory

No 5194, M51 Can.Ven, two views showing changes by C.O. Lampland

Photo of Great Sprial Nebula taken at Tuick observatory with 36 inch reflector

Schematic of the Galaxy

Sombrero Galaxy, mount wilson observatory

Spindle Nebula in Sextans, NGC 311, 40in Reflector

Spiral Nebula in Pisces. NGC 628, Lowell Observatory. Photo with 40in Reflector

Sprial Nebula in Coma. June 22 1917. Photo with 40 Reflector. Lowell Observatory

Taken at Lick Observatory, HI 24 Coma Merenices. NGC 4725, 1902. June 30

The Nebula H1, 163. Sextantis, NGC3115

The northern Milky Way, from scorpio to Cassioopeia. No MW77, Yerkes Observatory

Unlabeled Galaxy

Yerkes Observatory, No MW78. The northern Milky Way form Cassiopeia to Canis Major and Pupis

Yerkes Observatory, No N139. The Sequence of Nebular Types

Yerkes Observatory. No N136. Four barred spiralss, NGC 1300, 1530, 3351, and 5921

Center of the Galaxy With Clusters

Ideal section of the milky way, showing distribution of stars with reference to the plane of the galaxy

Model of the galatic neighborhood

NGC 4565, Lowell Observatory

Number of Galatic and Globular clusters vs latitude

Number of globular clusters vs latitude

Photograph of Andromeda Nebula. Exposure 12hrs. Goodsell Observatory 8in

Photographic chart of Milky Way and Diagram of our stellar system illusrating Easton's idea of its sprial structure

Proposed model of the galaxy

Space distribution of nearby galaxies

Spectrum of Andromeda Nebula. VM Slipher. Lowell Observatory

Spectrum of U. Minoris

Spectrum of U.Majoris

Table of galatic velocities

Triangulum Galaxy

Instruments

Harv II, Meteor Camera used by Whipple

6in meridian circle

Curves showing temp control for U-V stellar spectrograph

E5496, Meridian Circle

Everett's theodolite

Lilluminated Dial Pelorus

Multielement interferometer

New Plate-carrier 60in

Portable Theodolite

Portable transit scope

Prism mechanism for 11in telesscope

Radio Telescope Schematic

Rigidity box for UV stellar Spectrograph

Setting up Radio Telescope

Sheet metal mirror, 31.4 feet in diameter, 20 feet in focal length used for collecting cosmic static

Silvered-Glass Reflector

Slit for UV stellar Spectrograph

Temperature case for the U-V stellar spectrograph

Transit instrument, Uckfield Observatory

U.S. Navy Azimuth Circle

unamed astronomical instrument

unidentified radio telescope

University of Toronto, Department of Astronomy, Meteor Spectrograph A, shown without dew cap or heater. 13.5 cm F-4.5 lense 30 degree prism

Unknown astronomical instrument

unknown mechanical device, no caption

unknown, no caption

unkown device, no caption

unnamed astronomical instrument

unnamed radio telescope

UV spectrograph attached to the declination axis of the Lowell, 15in reflector. Aug 1935

UV stellar Spectrograph 1935-36

Yerkes Observatory, no 641, Measuring machine for stellar parallax

Yerkes Observattoy, no 298, Hartman Spectrocomparator, made by Ieiss

Diagram of Unknown Device

English dry card compass and compensating binnacle

Instrument in Patent N2.22556

Unknown Instrument

Unknown Insturment, possibly a spectrometer

Unknown mechanism by Warner and Swasey

C.D. Perrine. Jupiter Satellite VI Discovery Plate, 1904, Dec 3

Jupiter

Jupiter 1909. Photographed by Mr. E.C.Slipher at the Lowell Observatory. April 27th 7h445m M.M.T

Jupiter 1915 Oct.19, Region of Great Red Spot is seen at the right. By E.C.Slipher

Jupiter April 26-1909 7hr40m M.M.T. Photographed with the 24-inch refractor by E.C.Slipher. Exposure 3.5 seconds. Lowell Observatory

Jupiter Oct 16 1914 by E.C.Slipher. The Dark object at the center of Jupiter is satellite IV in transit. Note how much darker it is that Jupiter

Jupiter over time

Jupiter Sat VI and VII Discovery plate of VII. 1905 Jan 2

No 356, Yerkes Observatory Jupiter, Photographed with 40-inch refractor, exposure 10 seconds, Oct 2 1906

Photographed with the Lowell 24in refractor. Dec 19 1917. 16h G.M.T. by E.C.Slipher. These images (2 times the originals) show the planet magnified 500 diameters

S.B. Nicholson. Jupiter Satellites VIII and IX

Same longitude photographed 14 days apart. Note marked changes in the tropical belt. E.C.Slipher

Spectrum of Jupiter By V.M.Slipher. Lowell Observatory. Bright comparison lines above and below Fe and V. Inclination shows rapid rotation

Telescope view of Juipter satellite

Yerkes Observatory, No 358, Jupiter Photographed with 40-inch refractor, Dec 5 1905

Jupiter 1915, Photographed October 19 with Lowell refractor by E.C.Slipher. Region of the Great Red Spot is shown near right side of the disk

Jupiter and it's satellites

Spectrum of Jupiter showing identity with the solar spectrum. Yerkes Observatory

Mars

4 photographs of mars, drawing made at same time by E.C. Slipher. and photograph of drawing using 24inch Lowell refractor from 6000ft

D6. Relative apparent size of mars as seen at near opposition, far opposition and far conjunction

Drawing by Dr. Lowell,Lowell Observatory, Covering severall months and showing changes

Earth - Mars, relative positions

Lowell Observatory, Mars Globes composite 1905

Map of Martian Features

Mars 1907, Globe by Dr. Lowell. North Polar region

Mars 1907, Solis Lacus Region Lowell's Globe

Mars 1907. Globe by Dr. Lowell.South Polar Region

Mars 1916. Lowell with the 24in refractor. North Pole showing

Mars Photographed by Dr. Lowell July 11th 1907. Syrtis Minor Region

Mars photos of 1907,1916 and 1920 by Dr. Lowell and E.C.Slipher. Same region in different seasions. Equatorial white area in 1920

Mars, Views a,b and c taken in red light showing rotation. d, taken in blue light. 100-inch photographs

Minute spot at top is the melting polar cap. Bright spot on sunrise (right) edgeis morning frost. Photographed bt E.C.Slipher

Mount Wilson and Palomar Observatories, 276, Mars in blue and red light. 200-inch photographs

No 538, Yerkes Observatory, Mars, Photographed with 40-inch refractor. Region of Syrtis Major, Sept 28 1909

P2, Original Negative by W.H. Wright, Mars 1926 Oct. 16

Phobos not visible beyond 68degrees N,S of Mars equator

Photographed by Mr. C.O. Lampland July 26th. Solis Lacus Region. Lowell Observatory

Photographs of Mars and Dr. Lowell Drawing of 1907

Photographs of Mars showing same region, 1924 Sept 12, 1926 Nov 2, From a negative taken at Lick Observatory

Relative Diameters, Earth - Mars

Showing temporary bright area on mars in 1924. Observed by V.M. Slipher

W. ld. Wright. Mars, 1926 Nov 2

Wild Wright, Mars and San Jose

Telescopic view of Mars

Moon

10691 Moon Copernicus (full)

36 inch telescope, Moon nearly full

Archimedes, from Joh. Nep. Kriegers Mond-Atlas. pl45

Aristarchus, Herodotus, Apr 14 1897. Taf 27, Joh.Nep.Krieger's Mond-Atlas

Aristotle of Eudoxus. From Nasmyth and Carpenter. Plate X

Cauchy 1897 Aug 15, 12h 50m. Tat22. John.Nep.Krieger's Mond Atlas

D 10688, Moon Atlas

D10689 Moon Mountains

Fig 1. Distribution of ray Craters

Gassendi, Nasmyth and Carpenter

Group of Lunar Mountains, Plate XXV. Nasymith + Carpenter

Lunar Apennines, See No 12, Valentiner's Atlas

M10, Moore and Chappell, Lick Observatory, Moon (Alps and Plato), 1937 Oct 26

M11, Moore and Chappell, Lick Observatory, Moon region of Apennines Oct 26, 1937, 22d

M12, Moore and Champpell, Lick Observatory, Moon Copernicus, 1957 Oct 26, Age 22 days

M2. Photograph of the moon. July 21, 1893. Goodsell Observatory with 8-inch refractor

Mondlandschaft, No.11, Valentiner's Atlas

Moon, Age 4 days - From a negative taken at Lick Observatory

Mount Wilson and Palomar Observatories. Moon age 8 days. 100in photographs

Mount Wilson Observatories, Southern Portion of the moon at last quarter, made with the Hooker Telesope on September 15, 1919

Mount Wilson Observatory. Northern portion of the Moon at last quarter, made with the Hooker Telescope on September 15, 1919

No 436, Yerkes Observatory, Earth Lit New Moon, Feb 14 1907, Telescope 10-inch Bruce

Overlapping Craters from Nasmyth + Carpenter. Plate XXII

Pico as it would appear to an observer on the moon. Plate XXI. Nasymith + Carpenter

Picture map of moon and Skeleton map of moon to accompany. From Nasmyth and Carpenter. Plate V

Ptolemy, Alphons, Arzachaelte from Nasmyth + Carpenter, Plate XIII

Region of the Lunar Alps, See 10 Valentiner's Atlas

Ringmountain See 9 Valintiner's Atlas

Scenery on the Moon

Slender Shadows of Moon and Earth

Telescope View of the moon

Theophilus and vicinity. Exp 1-sec. 40in. Ritchey

Theophilus, Cryillus and Catharine, Plate XII, Nasmyth and Carpenter

To illustratte libration in latitude.

Triesnecker 1897 Aug 5. 8hrs. Taf24.Joh.Nep.Krieger's Mond-Atlas

Triesnecker, From Nasmyth + Carpenter. Plate XI

D10686 Moon Cofernicus

From a negative taken at Lick Observatory, Moon

Mount Wilson and Palomar Observatories, 253 Moon, age 14 days, 100-inch photograph

North central portion of the moon at last quarter, made with the Hooker Telescope on Sept 15, 1919

Picture of Moon. Ptolemaeu 3289

'Stars' - awlays seen never seen and intermeidate

Comparative Diameters of earth and the moon

Copernicus Crater, Nasmyth and Carpenter

Explaining the acceleration of the moon due to tidal action. Also early stages of double star system merger

Harvard College Observatory, D10684 Moon

Harvard College Observatory, No. D10690, Moon, Luace Seremetatus

Lunar Apennines, Archimedes

Lunar Cratering

Merccator and Campanus craters. Nasmyth and Carpenter

Moon, July 19 1893, Goodsell Observatory

Mount Wilson Observatory, South central portion of the moon at last quarter. Made with Hooker Telescope Sept 15, 1919

Mount Wilson Observatory, The moon, region of Cooernicus, photographed with the Hooker Telescope, Sept 15 1919

Photograph of the Moon, Dec 13 1894

Portion of surface of the moon, same area. Vestavius and Neighborhood of Naples. Plates VI and VII Nasmyth and Carpenter

Portion of the Moon, D3484

Surface of the Moon, July 220 1893, Goodsell Observatory

The Moon 10d 7.9hrs old, taken at Fuertes Obs. Feb 25 1923

Wargentin on the moon, Nasmyth and Carpenter

Navigation

Glass lense for the Kileua lighthouse

Naval Binnacle (2)

Cape Henry Fog Signal, Virgina

Lighthouse tender crocus just in from wintery work on Lake Erie near the and of the season of navigation

maintainance on a lighthouse

Map of Washington

Map of Waskington

Position Determined by Radio Bearing and On-Course Range Signal

Present stone lighthouse on minot's ledge massachusetts

Submarine fog signals

The Nantucket lightvessel, moored in the atlantic 41 miles from land

Workers on a ship

Nebulae

Crossley Reflector, Dumbell Nebula. Exposure 4hrs

G8 Nebula arund Merope, exposure 5 hrs, october 9, 1909

Horsehead nebula in Orion

Mount Wilson Solar Observatory, G7 Network Nebulain Cygnus (NGC 6992) exposure 10hrs 15min, July 2,3,4 1910

Northern part of nebula h.9.C.6960 photo with 60-inch Mount Wilson reflector by G.H.Retchey. Exposure 6.5 hrs. July 4-5 1910

Owl Nebula, (M 97) in Ursa Major by H Ritchey with LD in self. Exp 4hrs July 9 1910

American Nebula Region. Exposure 3hrs. Taken at Goodsell Observatory with 2.5 inch camera

Annular Nebula in Cygnus. NGC 6894, Lowell Observatory. 40in Reflector

Center of Nebula in Orion, Exposure 45min. 60in. Ritchey

Crab Nebula in Taurus. Photo with 60-inch Mt.Wilson reflector. Dec 13 1909. by Ritchey. Exposure 3 hrs

Crossley Reflector, Ring Nebula in Lyra

Crossley Reflector, The 'network' nebula in Cygnus

Crossley Reflector, the Trifid Nebula

D3477 Nebula in Orion

D6233, Dumbell Nebula

Direct and Prismatic photographs of the ring nebula, Lick Observatory

Dumbell Nebula in Vulpecula, by Ritchey. with 60 inch refractor at mount wilson Observatory. July 6&7 1910. Exposure 5hrs

Dumbell Nebula. NGC 6853. Lowell Observatory. 40in reflector. Lompland

Great Nebula in Orion. Yerkes Observatory

Great Orion Nebula, photographed with 40in Reflector by Lompland

Horsehead nebula and nearby regions

Mount Wilson Solar Obserevatory, G6 Network Nebula in Cygnus (NGC 6960) exposure 6hrs 30min, July 4 &5 1910

Mount Wilson Solar Observatory. G5 Sprial Nebula M33. Trianguli. Exposure 8hrs, 30min. August 5,6,7 1910

NGC 2392, Mount Wilson and Palomar Observatory

Orion Nebula, Exposure 4h 40m, taken at Goodsell Observatory, 8in reflector

Owl Nebula in Ursa Major. NGC 3587, 40in Reflector by Lampland

Photograph of Orion Nebula, exposure 9hrs. Taken at Goodsell Observatory wit h8in refractor

Photograph of Orion Nebula, Expouse 15. Goodsell Observatory 8inch ref.

Photograph of the Ring Nebula in Lyra, 2hrs. Taken at Goodsell Observatory with 8in refractor

Planetary Nebula, H4 27, Hydrae

Ring Nebula, N41 Mt. Wilson Observatory

Southern part ofNGC 6960, by Ritchey with 60in refractor. Mount Wilson Obs.Exposurre 12hrs. July 11-12-13, 1915

Spectrum of NGC 1982, Lowell Observatory

Trifid Nebula, M29. 60in, Exp 1-2 hrs, G.W.Ritchey

Trifid Nebula, NGC 6514.. By CO. Lompland with 40inch reflector Lowell Observatory

Yerkes Observatory, no 427, Orion Nebula. Showing efects of Color filters transmittance light of wavelengths 5100, 5600, and 6150, respectively. two foot reflector

Center of NGC 6992. 60 inch , Exposure 10hrs. G.W.Ritchey

changes in Cra Nebula, 1916-1921 C.O.Lampland. Lowell Observatory

NGC 6960 Photo with 60 inch reflector. July 14 1909, expsure hrs by Ritchey

Orion Nebula, Crossley Reflector

Spectra of Orion Nebula showing strong nebular emission

Spectra of Orion Nebula, Rigel, Sirius, Procyon, Sun, Arcturus,Betelgeuse, Miro

Spectrum of the Orion Nebula

Variable Nebula NGC 2261. Photo with 40'' reflector by C.o. Lampland

Yerkes Observatory, Hubble Nebula. Mar 27 1917. NGC 2261

Observatories

Detroit Observatory - Ann Arbor

Detroit Observatory

Diagram of observatory

Dome framework with 72in reflector + mounting

Dominion Astrophysical Obs. From north shutter open

Dominion Astrophysical Observatory, Victoria BC from south

Harvard College Observatory, E4858

Lick Observatory in winter

Lowell Observatory, No 4, Adminsitration Buidling and Lowell Observatory

Mount Wilson showing site of observatory

Mt Wilson Snow Telescope

Mt Wilson, showing trail to the observatory

No E5251, Cambrdige Station

unidentified obervatory

unknown building, o caption

unknown building, The Warner and Swasey Company, Cleveland Ohio (2)

unknown building, The Warner and Swasey Company, Cleveland Ohio

unknown observatory, no caption

unknown Observatory

View from Mount Wilson, showing road

Yerkes Observatory, No 191, Iron skeleton of great dome, wood sheathing just begun

Yerkes Observatory, no 192, View of 90-feet dome with shutter open and telescope visible

Yerkes Observatory, No 193, View from the northeast

People

Caroline Hershel

Dr. Lowell Observing Venus using the 24-inch equatorial

G.V. Schiaparelli

Galileo Galilei

Percival Lowell LLD 1955-1916, Founder Director and Perpetuator of the Lowell Observatory

Portrait of Edmund Halley

Sir Issac Newton

William Hershel

Saturn

No 357, Yerkes Observatory, Drawing of Saturn rings opened to fullest extent, 40-inch telescope, by EE Barnard, July 7 1898

No 41. Saturn rings on edge showing satellites. Drawn by Percival Lowell

no 42. Left drawn by keeler first night after erection with lick 36-in. Right photo by E.C. Slipher Feb 8 1917

Saturn 1909. Lowell obs. no60

Saturn 1909. Photographed by Dr. Percival Lowell. Nov4 at 9rs 45m M.M.T

Saturn 1910, August 19th. 16h 12m M.M.T. Photographed at the Lowell Observatory by Mr. E.C. Slipher

Saturn 1915. Drawing by Dr. Lowell

Saturn and its Sattelites iwth the 40in reflector. Lowell Observatory. Top Rhea. Middlerow. Dione, Tethys, Enceladus,Mimas. Bot Titan

Saturn, March 27 and 29. 1856

Saturn's Rotation

Shadow of the planet on the rings at different seasons of the saturnian year

Telescopic view of saturn

Yerkes Observatory, No 440, Drawing of Saturns Rings on Edge showing condensations (ApJ 2y), By FF Barnard, Dec 12 1904

Saturn as seen from Iapetus. Iapetus 2,225,000 from saturn and Iapetus is about the size of our moon

Saturn photographed with the Lowell 24-inch refractor. Note that the ball shines through ring A, reaches plane of rings in 1921

Spectrum of Saturn showing the material composition of the rings. VM Slipher Lowell Observatory

Science

Edgar Fleming, Victoria B.C. Refraction of a Light Ray

Frequencies and Wavelengths off light

Number of Orbits vs Eccentricity

Constant intensity lines on the sky

Diagram of how the eye sees an object

Orbital equations

Period-magnitude relation for the 88 Cepheid variables, open circles indicate variables in the Large Magellanic Cloud

Comaprison of Wavelengths of Light

Demonstration of kepler's second law

Description of Orbital Components

Difference between synodic and siderial rotation

Example light curves

Explanation of abberation

Mean vs Siderial Time

Model explaning how to determine the position of a meteor

Movement of the Celestial pole due to precession

Table of all ether waves now known

the complete electric wave spectrum

Unknown Diagram

Unknown Table (2)

Unknown Table (3)

Unknown Table (4)

Unknown Table (5)

Solar System

Fig 169, Orbita de Eros

Illustration of the Perturbation of Uranus by Neptune, No38

Mount Wilsono and Palomar Observatories, Pluto two photographs showing motion of the planet in twenty-four hours. 200-inch photographs

No 519, Yerkes Observatory, Neptune and its satellite, Oct-10-1900, Exposure 1 Hour 40inch Refractor

No D3, Relatie Sizes of Planets

Orbit of asteroids and the planets

Orbitas de los 108 pequenos planeas descubiertos in 1869

Predicted and actual orbit of pluto

The orbits of Neptune and Pluto

The sun and his family of planets

Disturbing action of the sun on moon from different positions

Orbits of Earth and Mars showing Equinoxes (DAMAGED)

Orbits of the earth, moon and planets around the sun

Orbits of the Planets

Orbits of three planets, with asteroids 1932EA and 1932 H.A.

Positions of the planets

Relatie size of each planet and the orbits of its sattelites

Relative apparent size of the sun, as viewed from different planets

Relative apparent sizes of the sun as seen from different planets

Relative size and distances of earth and the moon and of jupiter and its moons

Relative sizes of each planet and it's sattelites

Relative Sizes of the planets

Stars

alpha centurai companion oribt

Companion of Sirius, Redrawn and brought down to 1913 by G.Van Biesbroeck

Diagram of the orbit of Sirius' companion

Proper motion of stars in The Pleadies Region

SC 201, Yerkes Observatory, 100 Reperstative Slides, Photographs in 1908, 1915 and 1920 of the binary star 'Krueger 60' showing orbital motion

SC 351, Diagram of orbit visiual binary, 70 Ophicuchi (period, 87 years) (815). Yerkes Observatory 100 Repersentative Slides

The binary 61 Cygni with omparision stars. Photographed for detmination of parallax in connection with a simmilar plate taken about six moths later. Slight off focus so that star images would show

The frequency of the periods of classical Cepheids in three galaxies

Yerkes Observatory. Star in Ophiuchi with large proper motion. Aug 24 1894 and May 30, 1916

Eta Carnia Region

Globular Cluster Messier 13. 60in Exposure 11hrs. G.W.Ritchey

Messier 13, Yerkes 40inch Exposure 2hrs. G.W.Ritchey

Milky Way about Ophiuchus E.E.Barnard with 10in portrait frame, Yerkes Observatory

MW 32. Region of double cluster in Perseus in Milky Way. Yerkes Observatory 100 repersentative slides

Unidentified Star Cluster

unknown photo of a star

Yerkes Observatory, No 500, Extra-Focal images of Arcturus to determine the zonal errors of the 40in objective. Astrophysical Journal, Vol 27 P 238

Comaparison of the Magnitudes of tow stars

Computed Dimensions of typical stars

Density at center of 18 per for stars brighter than 4.5 mag.Distance 1430 parsecs. M37

Difference between spectra of vega and t persei

Distribution of radial velocities of 2149 Stars

Effective temepratures of stars of different classes

Flare up of Kruger 60B

Galatic distribution of 'temporary stars'

Illustration of the apparent convergence of site lines

M13 potsdam refractor. Exp 1hr

M2 Aquarius. Exposure 3hrs

M46 Argus. Involve a planetary nebula. Exp 55 min

Main Sequence evolution tracks of stars

Milky Way about 58 Ophiuchi. EE Barnard with 60inch

Model of the evolution of a Nova

Multipule exposures of L-726-B. Taken with 36inch telescope at the University of Arizona

NGC 7789 Cassiopeia, Aug 22 1906. Exp 120min

Nova Aquilae No3. Plates of July 3 (above) June 27 (below). Showing change in nature of emission hydrogen bands

Nova Herculis, direct photo. 1935 March 10

Nova, before and after an outburst. Taken 1903 and 1919

Perseus Cluster. Exposure 1hr 20min. Goodsell Observatory 8in refractor

Photo of cluster in Scutum. Exp 8hrs. Goodsell Obsrevatory with 8in Refractor

Photograph of Lyra Region. 2hrs exposure. Goodsell Observatory with 2.5 inch camera

Photograph of Polar star trails, exposure 11hrs

Plate XIX, Black spot in star cloud in saggitarius. Exposure 4h 30m, with 10in Bruce Telescope

Praesepe in Cancer shows the remarkable grouping of the stars in the cluster. Feb 4 1911. Exposure 3h 8min

R Aquarii It is tances of ansae form star, about 40'', Lowell Observatory

R. Aquarii, Lowell Observatory

Relative Magnitudes of 10i Cygni and 24i Cygni

SC 197, Star trails around the pole and equator, Yerkes Observatory 100 Repersentative Slides

SC 230, The variable star RZ Cassiopeia, extra-focal photographs, covering a minimum. Yerkes Observatory 100 Representative Slides

SC 302. Loose cluster in Aquila. M11. Yerkes Observatory 100 represntative slides

Schematic light curve of a Nova

Sky Spectrum. Taken By V.M.Slipher. Colored by G.H.Hamilton. Lowell Observatory

Spectra of alpha lyrae (Vega) top, and H.R. 8803 bottom

Spectra of bright stars

Spectra of Dr. Plaskett's massive star. BD 6, on approach and receeding

Spectra of gamma persei

Spectra of Mu Orionis Jan 5-1906. With plate velocities of +38 and +72 km per sec.Yerkes Observatory

Spectra of Nova Aguriae and o Ceti

Spectrum of alpha lyrae

Spectrum of i Herculis

Spectrum of a spectroscopic binary star

Spectrum of B Aguriae. Harvard College Observatory. No. 26549

Spectrum of Beta Librae

Spectrum of Nova Aquilae No 3, July 21 1918

Spectrum of Nova Aquilae No 3, June 28 1918

Spectrum of Nova Aquilae no 3. Made July 4 1918

Spectrum of Nova Aquilae no 3. Made with slit-less spectrograph. Lowell Eclipse Expedition. Syracuse. By V.M. Slipher

Spectrum of Nova Aquilae. July 4 1918. V.M.Slipher

Spectrum of Nova Geninorum No 2. Jan 3 1913

Spectrum of the dwarf star Boss 2463 and the giant star Boss 3793

Spectrum of the Giant star gamma Cygni and dwarf star B.Can.Ven.

Spectrum of Vega

Star Cloud and Black Holes in Sagittarius. July 31 1905. [coords = 8h7m, -18 20'] 10inch Bruce Telescope. Exposure 4hrs 30min

Ultraviolet spectra of vega

Unknown Spectra (2)

Unknown Spectra (3)

Unknown Spectra (4)

Unknown Spectra

Unknown Star (2)

Unknown Star (3)

UV Spectra of alpha orionis and alpha tauri and pllux

UV Spectra of Sirius adn Procyon

V4 Buiclani 1907

Variable star U Ophiuchi of the agol type minimum as photographed by pankhurst with extra-focal camera. June 13 1907

Variable stars R and S Scorpii, shoiwng changes in brightness. Yerkes Observatory 100 Repersentative Slides

Yerkes Observatory, Extra focal spectra of vega to determine the color curve of the 40in objective

Yerkes Observatory, M5 in Libra, photographed with 40in telescope

Yerkes Observatory. M15 in Pegasus. Exp 3hr 20min

Yerkes Observatory. Spectra of Beta Cephei

Yerkes Observatory. Spot spectum showing altered lines

Young's Observation of the Reversal of D-lines

Youngs observation of Dline reversal

Sun

Calcium spectroheliograms of a prominence June 19, 1911. Taken between 2h18m and 5h35m GMT

Calcium spectroheliograms of the prominence of June 19-20 1911. Taken between 9hrs 45m and 9hrs 55min. June 19 and 2hrs 3min and 4hrs 58min June 20. Yerkes Observatory No.670

Combination of six prominences indicating horizontal currents in the solar atmosphere. Yerkes Observatory, No 649

Five viws of large quiescent prominences (Banyan group) lasting through two rotations of the sun. Taken between Mar 17 and Apr 25 1910 GMT. Yerkes Observatory No 724

From a negative taken at Meudon, France, sunspots and solar surface

Growth and subsidence of eruption 140,000 miles long and connecting two snspots, no 527, Yerkes Observatory

Large prominences of Oct 10, 1910. Very fine detail 10 minutes apart. 65,000 miles high

Lense of 35 feet short exposure for inner corona and prominences. E.C. Slipher

Mount Wilson and Palomar Observatories, Photograph of the sun near sunspot maximum showing 23 spot groups, July 13 1937

Mount Wilson Observatory, B60, Direct photograph of whole sun showing the largest group ever photographed, Jan 24, 1926

Neg no 2R8, Prominences

Neg no. S41.spectroheliograms of the sun

No. 2Qo, S.L.B, Sunspots

Photograph of the sun, Aug 4 1893, Goodsell Observatory with 8in refractor

Photograph of the sun, Aug 7 1893

Photographs of the sun, Aug 1-11, 1893, Goodsell Observatory with 8-inch refractor

Prominence spotgroup. photographed over Oct 6-7. Yerkes observatory no 835

rotation of sun shown by four exposures mar 2-3-4-5, 1922. Yerkes Observatory No S76

S124, Attraction of sunspost for prominences - spectroheliograms. Oct 22 1910. Inrush of calcium vapor at velocity of 100km per seconds

S50m spot of July 7, 1903 showing high-level calcium vapor

S52 - Spot of July 7, 1903. showingdark and bright hydrogen floeouli photographed witht H line

S78, Spectroheliograms of the sun's disk with brilliant flocculi on 8 sucessive days to illustrate solar rotation

S9, Direct Photograph of the disk, with large and small spots, Aug 7 1917. Yerkes Observatory, 100 repersentative slides

S95, Combination of prominence and disk. Yerkes Observatory 100 Representative Slides

S99. Semicircle of prominences, Yerkes Observatory 100 repersentative Slides

Solar disk with huge spot direc photograph with the 12inch refractor

Solar Prominences (2)

Solar Prominences

Solar temperature vs frequency

Spot of April 29, 1903, showing high level calcium vapor with slit atcenter of K line

Spot of April 29, 1909 showing calcium vapor at a moderatel high level, partially covering that spot

sun solar disk showing spots and granulations. Aug 9, 1907

Sunsets at Hawaii

Sunspot, Aug 8 1893

Wilson Observatory, Solar promiences.

Yerkes Observatory S49, Spot of July 7, 1903. showing low level calcium vapor

Yerkes Observatory S58, Flocculi of Aug 22 1919 at four levels

Yerkes Observatory solar prominence of may 29, 1919

Yerkes Observatory, No 306, Greatspot of Feb 1907 taken with Easton photoheliograph

Yerkes Observatory, No 325, Sunspot five views at different levels taken with spectroheliograph with with at various distances from center. left to right, l = 3966.0, 3966.4, 3967.8, 3968.8, 3968.2, 3968.6

Yerkes Observatory, no 669. Calcium spectroheliograms of prominences June 19,1911. Taken between 5h55m and 9h10m GMT

Yerkes Observatory, No S134, five views of the 'banyarn' proinence during Mar 17 & 18, 1910

Yerkes Observatory, No S138, Unusual jet-like prominence 200,000 km in height. April 19 1916.

Yerkes Observatory, S5, 100 repersentative slides. Direct photograph and high-level calcium spectroheliogram, Feb 12-13 1907

Yerkes Observatory, S67, calcium spectroheliogram showing sprial structure in sunspot. Taken sept 24, 1909. The spot was contemporaneous with mag storm sept 25

Yerkes Observatory, spot July 7 1903, showing dark hydrogen floculi

YerkesObservatory, shot of April 29, 1903 showing low level calcium vapor

Distribution of energy in the solar spectrum

Solar Spectrum in Region of D lines of Sodium. Showing Helium line D2. Gif of Dr. P.W. Merrill Jun 2 1920

Spectra of the sun. 20 degresabove the horizon (top) and at horizon (bottom) Lowell Observatory

Spectrum of the sun

Mount Wilson and Palomar Observatories, photograph of the sun taken under excellent conditions, showing large sunspots and fine structure of the suns surface, July 31 1949

Telescopes

100in mirror on grinding machine.

100in mirror on polishing machine, turned down for optical testing

10in Photograph Telescope

11 inch reflecter

12-inch Equatorial Telescope

120in disc in position for inspection from Dr. McCauley

120in disc in pouring oven cooling

12inch Position Filar Micrometer

1916, Hauling the 9.5 ton polar axis of the 72inch reflector up Litle Saanich Mt. to the site of the Dom. Astroph. Obs.

20in Equatorial Telescope

24in Bruce Telescope

60in reflector being erected in its dome

60in reflector dome, mount wilson observatory

72in reflecor of the Dominion Asrop. Obs aat Victoria British Coloumbia

72in reflector of the Dominion astrophysical observatory being constructed

72in reflector of the Dominion astrophysical observatory in the cource of erection

72in reflector of the Dominion Astrophysical Observatory in Victoria BC

72in reflector of the Dominion Astrophysical Observatory

72inch reflector of Domion Observatory Victoria BC

Bruce telescope eye end, showing plate holders. Yerkes Observatory, no 49

Equatorial at the Uckfield Observatory

Equatorially mounted reflector

Equatorially-mounted refractor

Eyepiece end of the Newall refractor, with spectroscope attached

Huggins large telescope

Light Rays inside a telescope

mirror of 72in reflector of the dominion astrophyiscal observatory on stand

Mount Wilson and Palomar Observatories, P5 Hale telescope pointed North

Mount Wilson and Palomar Observatory, Hale Telescope pointing to Zeinth. Shows Cassegrain platform

Mount Wilson vertical telescope

No E4851, 12in Telescope

Photograph of mofel of 100in reflector

Planetary camera attached to the Lowell 24-inch

Pouring oven for the 120inch Mirror

Sixty inch reflector, Mt. Wilson Observatory

Sketch of the 200in telescope, by Mr. Russell W. Porter

Telescope at Detroit Observatory Ann Arbor

Telescope at Detroit Observatory, Ann Arbor

Telescope Model

The platfomof th Treptow-Sternwarte refractor

The podium of the observing end of the Treptower refractor

The projected 100 inch telescope comapred to hooker

Yerkes Observatory, No 158, the 40in refractor, with rising floor at highestp position

Yerkes Observatory, no 187, Wedge photometer attached to the forty inch telescope

Yerkes Observatory, No 314. 40in Objective ready for mounting, Alvan Clark sitting beside the lense

Yerkes Observatory, No 498, Bruce telescope showingthe threee objectives by which three different sized phogographed of the same region may be photographed simultaneously

Yerkes Observatory, No 640, Sixinch comet seeker on roof

Yerkes Observatory no 157, the 40-inch refractor with rising floor at lowest position

Venus

Venus Photographs with the lowell 24in refractor with a system magnifying 200 times. Photos show the true relataive size of the disk and the corresponding phases of the planet

Mount Wilson and Palomar Observatories, 282, Venus in blue light. 200-inch photograph

Mount Wilson and Palomar Observatories, Venus six photographs, 100-inch photographs

Phases of Venus

Spectrum of Venus. VM Slpher. Lowell Obs

Miscellaneous

From Australian Journal of Scientific Research, Ser A, Vol 5, p 273 (1952)

From Journal of scientific research. Sear A, Vol 5, p272 (1952)

From Observatory, vol 73, p138, aug 1953

Mount Wilson Observatory

Mount Wilson and Palomar Observatories, Cygnus 'A' radio source. 2ooin photographs

Mount Wilson and Palomar Observatories. Radio Source in Cassiopeia, taken in red light. 200in photographs

The White Nebula