Sample Images
These images show interesting examples from scans of photographic plates, observation notebooks, logbooks and plate envelopes mainly from DR1.
POT015_000112
A direct image with a single half an hour exposure of the Pleiades open cluster obtained by Wilhelm Münch on March 7, 1910 with the 15-cm Zeiss-Triplet telescope. A similar image taken on the next night served Ejnar Hertzsprung as a source for his publication in Astronomische Nachrichten vol. 195, issue 23, p. 449.
POT017_005577
One of many direct images with six 3-minute exposures of the near-Earth Amor-family asteroid (433) Eros during its close approach to the Earth obtained by Rolf Müller on December 13, 1937 with the 17-cm Zeiss-Triplet telescope. The observation of Eros was then continued by Georg Hartwig, and the results of 8 nights were published in Astronomische Nachrichten vol. 269, issue 2, p.92.
POT080B_550817Be
Envelope of the plate with the image of the comet Honda (C/1955 O1) obtained on August 17, 1955 with the 80-cm Great Refractor.
Logbook frontcover
The front cover of the first volume of the plate catalogue of plates obtained in the period from November 1909 till October 1911 with the 15-cm Zeiss-Triplet telescope.
POT015_001853
An objective prism image (with two one hour exposures on the plate rotated by 180 degrees between the exposures) of the alpha Cyg field obtained by Wilhelm Münch on October 12, 1912 with the 15-cm Zeiss-Triplet telescope.
POT050_000054
A direct image with a single one hour exposure of the North America Nebula (NGC 7000) obtained on September 13, 1953 with the 50-cm Great Schmidt camera.
POT015_000342
An objective grating image with a single one hour exposure of the Pleiades open cluster obtained by Ejnar Hertzsprung on September 4, 1910 with the 15-cm Zeiss-Triplet telescope. Thus, different observation methods were used.
POT015_001581
An objective prism image with a single two hour exposure of the Hyades open cluster obtained by Ejnar Hertzsprung on December 17, 1911 with the 15-cm Zeiss-Triplet telescope.
001341-001358
One of the pages in the first volume of the plate catalogue of plates obtained in the period from November 1909 till October 1911 with the 15-cm Zeiss-Triplet telescope. The text is written by the hand of Ejnar Hertzsprung who obtained these plates on September 13, 1911.
POT017_005137
A objective prism image with five exposures of Nova Her 1934 obtained by Rolf Müller on December 23, 1934 with the 17-cm Zeiss-Triplet telescope.
POT015_004337
An objective prism image of Jupiter in Hyades obtained on November 21, 1917 with the 15-cm Zeiss-Triplet telescope.
POT015_004652
A direct image with two half an hour exposures of Nova Aql 1927 field obtained by Wilhelm Münch on September 3, 1927 with the 15-cm Zeiss-Triplet telescope.
POT015_000213
A direct image with a single 65-minute exposure of the Polaris (alpha UMi) field obtained by Wilhelm Münch on April 12, 1910 with the 15-cm Zeiss-Triplet telescope. The hand-written notes at the edges of the plate were added some time later, because they refer to the Annals of the Astronomical Observatory of Harvard College vol. 48 (as H.A.48 on the plate) published in 1903 and to the Harvard College Observatory Circular vol. 170 (as H.C.170 on the plate) published in 1912, that is two years after the observation date of this plate. Some of the stars are encircled and assigned the numbers from H.C.170, the larger square is related to H.A.48, while the smaller rectangle is related to H.C.170.
45
One of the pages in the first volume of the observational books for the plate obtained with the 25-cm Small Schmidt camera.
POT015_000165
An objective prism image (with two 15-minute exposures on the plate rotated by 180 degrees between the exposures) of the Pleiades open cluster obtained by Wilhelm Münch on March 23, 1910 with the 15-cm Zeiss-Triplet telescope. The rotation of the plate was used to avoid measurement errors for the studied object in the case of any inhomogeneity of the emulsion on the plate.
POT015_000893
One of the over 400 objective grating images of the Polaris (alpha UMi) obtained by Ejnar Hertzsprung on 50 nights during a long period from November 1910 till May 1911 with the 15-cm Zeiss-Triplet telescope. On the basis of these observations Hertzsprung had confirmed the variability of alpha UMi's brightness. The results of his investigation as well as observational details to these plate were published in Astronomische Nachrichten vol. 189, issue 6, p. 89.
POT050_000048
A direct image with a single one hour exposure of the Andromeda Galaxy (M31) obtained on September 7, 1953 with the 50-cm Great Schmidt camera.
POTROS_000050
A direct image with a single 32-minute exposure of the iota Cep variable star's field obtained on December 3, 1956 with the Ross camera.
POT015_003938
An objective prism image of Saturn (three exposures) and Mars (two exposures) obtained on February 28, 1914 with the 15-cm Zeiss-Triplet telescope.
POT015_000165
An objective prism image (with two 15-minute exposures on the plate rotated by 180 degrees between the exposures) of the Pleiades open cluster obtained by Wilhelm Münch on March 23, 1910 with the 15-cm Zeiss-Triplet telescope. The rotation of the plate was used to avoid measurement errors for the studied object in the case of any inhomogeneity of the emulsion on the plate.
POT015_001581
An objective prism image with a single two hour exposure of the Hyades open cluster obtained by Ejnar Hertzsprung on December 17, 1911 with the 15-cm Zeiss-Triplet telescope.
POTROS_000020e
Envelope of the plate 20 with the image of the iota Cep variable star's field obtained on July 13, 1956 with the Ross camera.
45
One of the pages in the first volume of the observational books for the plate obtained with the 25-cm Small Schmidt camera.
POT015_000213
A direct image with a single 65-minute exposure of the Polaris (alpha UMi) field obtained by Wilhelm Münch on April 12, 1910 with the 15-cm Zeiss-Triplet telescope. The hand-written notes at the edges of the plate were added some time later, because they refer to the Annals of the Astronomical Observatory of Harvard College vol. 48 (as H.A.48 on the plate) published in 1903 and to the Harvard College Observatory Circular vol. 170 (as H.C.170 on the plate) published in 1912, that is two years after the observation date of this plate. Some of the stars are encircled and assigned the numbers from H.C.170, the larger square is related to H.A.48, while the smaller rectangle is related to H.C.170.
004645-004649
One of the pages in the 12th observational book for the plates obtained with the 15- and 17-cm Zeiss-Triplet telescopes.
POT015_003938
An objective prism image of Saturn (three exposures) and Mars (two exposures) obtained on February 28, 1914 with the 15-cm Zeiss-Triplet telescope.
000001-000008
The first page with 8 plates of the first volume of the plate catalogue obtained in the period from November 1909 till October 1911 with the 15-cm Zeiss-Triplet telescope. The text is written by the hand of Wilhelm Münch who obtained these plates. The columns contains the following data: plate number, observation date, exposure start and end time, object name, celestial equatorial coordinates, focus value, air temperature, orientation of the telescope's tubus, observer's notes.
POT080B_550817Be
Envelope of the plate with the image of the comet Honda (C/1955 O1) obtained on August 17, 1955 with the 80-cm Great Refractor.
POT016_000036e
Envelope of the plate 36 with the image of the variable star W Ori obtained on February 2, 1960 with the 16-cm Astro-Triplet camera.
POT050_000051
A direct image with a single half an hour exposure of the Dumbbell Nebula (M27) obtained on September 8, 1953 with the 50-cm Great Schmidt camera.
POT050_000054
A direct image with a single one hour exposure of the North America Nebula (NGC 7000) obtained on September 13, 1953 with the 50-cm Great Schmidt camera.
POT030C_000092
A direct image with eighteen 38-second exposures of nu-1 and nu-2 CrB double star obtained by Ejnar Hertzsprung on March 12, 1912 with the 30-cm Schröder refractor.
POT015_004664e
Envelope of the plate 4664 with the image of the Orion Nebula's area obtained by Rolf Müller on March 3, 1932 with the 15-cm Zeiss-Triplet telescope.
000001-000002
The first page in the first volume of the observational books for the plates obtained with the 50-cm Great Schmidt camera. On the left page letter codes used in plate numbers are explained.
POT015_005381
A direct image with twenty-four 6- and 14-minute exposures of BD+00 4900 (CY Aqr) variable star field obtained by Rolf Müller on September 1, 1935 with the 15-cm Zeiss-Triplet telescope.
POT015_000786
An objective prism image with a single 82-minute exposure of the Nova Lac 1910 field obtained by Wilhelm Münch on March 1, 1911 with the 15-cm Zeiss-Triplet telescope. Some of the observations of this nova a few days afore were analyzed and published in Astronomische Nachrichten vol. 188, issue 2, p. 17.
POT025_000109
An objective prism image with a single 10-minute exposure of HD 128220 spectroscopic binary star field obtained by Horst Strohbusch on June 12, 1966 with the 25-cm Small Schimdt camera.
POT016_000036e
Envelope of the plate 36 with the image of the variable star W Ori obtained on February 2, 1960 with the 16-cm Astro-Triplet camera.
POT015_004664e
Envelope of the plate 4664 with the image of the Orion Nebula's area obtained by Rolf Müller on March 3, 1932 with the 15-cm Zeiss-Triplet telescope.
POT015_001853
An objective prism image (with two one hour exposures on the plate rotated by 180 degrees between the exposures) of the alpha Cyg field obtained by Wilhelm Münch on October 12, 1912 with the 15-cm Zeiss-Triplet telescope.
POT030C_01
The first page of the observational book for the plates obtained entirely by Ejnar Hertzsprung with the 30-cm Schröder refractor, the observational notes are also written by him. On the left page there is an explanatory note written by Wilhelm Münch a few years later.
POT015_000786
An objective prism image with a single 82-minute exposure of the Nova Lac 1910 field obtained by Wilhelm Münch on March 1, 1911 with the 15-cm Zeiss-Triplet telescope. Some of the observations of this nova a few days afore were analyzed and published in Astronomische Nachrichten vol. 188, issue 2, p. 17.
POT080B_570814B
A direct image with a single 10-minute exposure of the comet Mrkos (C/1957 P1) obtained by Gerhard Böttger on August 14, 1957 with the 80-cm Great Refractor.
POTROS_000050
A direct image with a single 32-minute exposure of the iota Cep variable star's field obtained on December 3, 1956 with the Ross camera.
ZT-LB01 Logbook frontcover
The front cover of the first volume of the plate catalogue of plates obtained in the period from November 1909 till October 1911 with the 15-cm Zeiss-Triplet telescope.
POT015_004652
A direct image with two half an hour exposures of Nova Aql 1927 field obtained by Wilhelm Münch on September 3, 1927 with the 15-cm Zeiss-Triplet telescope.
POT015_005523
A direct image with three 30-, 10- and 3-minute exposures of T UMa variable star's field obtained by Rolf Müller on January 8, 1937 with the 15-cm Zeiss-Triplet telescope. On the same plate there are three exposures of the same exposure times of the North Pole area; this was done on the purpose to have well-known comparison stars on the same plate.
POT025_000002
Envelope of the plate 2 with the image of the Delphinus constellation's area obtained on August 5, 1949 with the 25-cm Small Schmidt camera.
POT015_005381
A direct image with twenty-four 6- and 14-minute exposures of BD+00 4900 (CY Aqr) variable star field obtained by Rolf Müller on September 1, 1935 with the 15-cm Zeiss-Triplet telescope.
POT050_000048
A direct image with a single one hour exposure of the Andromeda Galaxy (M31) obtained on September 7, 1953 with the 50-cm Great Schmidt camera.
POT015_000047
A direct image of the Great January Comet of 1910, also called the Daylight Comet, and formally designated as C/1910 A1, observed by Wilhelm Münch on January 26, 1910 with the 15-cm Zeiss-Triplet telescope. At that time the comet was visible in the evening twilight sky. The comet must have had the brightness about 0 mag and a long tail reaching from 30 to 50 degrees according to different sources.
POT050_000035e
Envelope of the plate 35 with the image of the Ring Nebula (M57) obtained on September 1, 1953 with the 50-cm Great Schmidt camera.
POT050_000051
A direct image with a single half an hour exposure of the Dumbbell Nebula (M27) obtained on September 8, 1953 with the 50-cm Great Schmidt camera.
POT080B_570814B
A direct image with a single 10-minute exposure of the comet Mrkos (C/1957 P1) obtained by Gerhard Böttger on August 14, 1957 with the 80-cm Great Refractor.
POT015_000342
An objective grating image with a single one hour exposure of the Pleiades open cluster obtained by Ejnar Hertzsprung on September 4, 1910 with the 15-cm Zeiss-Triplet telescope. Thus, different observation methods were used.
POT015_001415
An objective prism image with a single one hour exposure of the comet Brooks (C/1911 O1) obtained by Kurt Bottlinger on September 19, 1911 with the 15-cm Zeiss-Triplet telescope.
001341-001358
One of the pages in the first volume of the plate catalogue of plates obtained in the period from November 1909 till October 1911 with the 15-cm Zeiss-Triplet telescope. The text is written by the hand of Ejnar Hertzsprung who obtained these plates on September 13, 1911.
000001-0000021
The first page in the first volume of the observational books for the plates obtained with the 50-cm Great Schmidt camera. On the left page letter codes used in plate numbers are explained.
POT017_005137
A objective prism image with five exposures of Nova Her 1934 obtained by Rolf Müller on December 23, 1934 with the 17-cm Zeiss-Triplet telescope
POT030C_000092
A direct image with eighteen 38-second exposures of nu-1 and nu-2 CrB double star obtained by Ejnar Hertzsprung on March 12, 1912 with the 30-cm Schröder refractor.
POT015_000893
One of the over 400 objective grating images of the Polaris (alpha UMi) obtained by Ejnar Hertzsprung on 50 nights during a long period from November 1910 till May 1911 with the 15-cm Zeiss-Triplet telescope. On the basis of these observations Hertzsprung had confirmed the variability of alpha UMi's brightness. The results of his investigation as well as observational details to these plate were published in Astronomische Nachrichten vol. 189, issue 6, p. 89.
004645-004649
One of the pages in the 12th observational book for the plates obtained with the 15- and 17-cm Zeiss-Triplet telescopes.
POT015_000047
A direct image of the Great January Comet of 1910, also called the Daylight Comet, and formally designated as C/1910 A1, observed by Wilhelm Münch on January 26, 1910 with the 15-cm Zeiss-Triplet telescope. At that time the comet was visible in the evening twilight sky. The comet must have had the brightness about 0 mag and a long tail reaching from 30 to 50 degrees according to different sources.
POT025_000109
An objective prism image with a single 10-minute exposure of HD 128220 spectroscopic binary star field obtained by Horst Strohbusch on June 12, 1966 with the 25-cm Small Schimdt camera.
000001-000008
The first page with 8 plates of the first volume of the plate catalogue obtained in the period from November 1909 till October 1911 with the 15-cm Zeiss-Triplet telescope. The text is written by the hand of Wilhelm Münch who obtained these plates. The columns contains the following data: plate number, observation date, exposure start and end time, object name, celestial equatorial coordinates, focus value, air temperature, orientation of the telescope's tubus, observer's notes.
POT015_005523
A direct image with three 30-, 10- and 3-minute exposures of T UMa variable star's field obtained by Rolf Müller on January 8, 1937 with the 15-cm Zeiss-Triplet telescope. On the same plate there are three exposures of the same exposure times of the North Pole area; this was done on the purpose to have well-known comparison stars on the same plate.
POTROS_000020e
Envelope of the plate 20 with the image of the iota Cep variable star's field obtained on July 13, 1956 with the Ross camera.
POT015_000112
A direct image with a single half an hour exposure of the Pleiades open cluster obtained by Wilhelm Münch on March 7, 1910 with the 15-cm Zeiss-Triplet telescope. A similar image taken on the next night served Ejnar Hertzsprung as a source for his publication in Astronomische Nachrichten vol. 195, issue 23, p. 449.
POT025_000002
Envelope of the plate 2 with the image of the Delphinus constellation's area obtained on August 5, 1949 with the 25-cm Small Schmidt camera.
POT050_000035e
Envelope of the plate 35 with the image of the Ring Nebula (M57) obtained on September 1, 1953 with the 50-cm Great Schmidt camera.
POT030C_01
The first page of the observational book for the plates obtained entirely by Ejnar Hertzsprung with the 30-cm Schröder refractor, the observational notes are also written by him. On the left page there is an explanatory note written by Wilhelm Münch a few years later.
POT015_004337
An objective prism image of Jupiter in Hyades obtained on November 21, 1917 with the 15-cm Zeiss-Triplet telescope.
