Harvard Plate Collection Metcalf Telescope

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Plate Series

Plates are cataloged by plate series and plate number. Each series typically represents a single telescope although some series, notably the "mb" series consists of data from multiple telescopes. Telescopes were occasionally moved to other observatories depending on observational goals.

The following table represents all of the Harvard plate series currently in the database.

The plate scale, if available, comes from Jessica Mink's WCS fitting algorithm. Otherwise, the scale comes from archive records. The values provided here are not definitive for early "mc" plates before the objective was refigured, and for the multiple-telescope "mb" series.

There are currently 88 series in the database. The primary source of this information comes from Martha Hazen's History of the Plate Series binder at the plate stacks. To see this source information, click on the series name in the table below.

Plate Series Table
seriesIdSeriesAperture (m)Scale (arcsec/mm)Telescope
1a0.659.5724-inch Bruce Doublet
37ab0.06355902.5-inch Ross Portrait Lens
2ac0.038606.41.5-inch Cooke Lenses
38acmiscac-b logbook. No plates.
39aco0.0254611.31 in Cook Lens #832 Series renamed from ac-a
3adh0.766832-36 inch BakerSchmidt 10 1/2 inch round Armagh-Dunsink-Harvard
40ai0.0381360Patrol cameras
41ak0.038614.51.5 in Cooke "Long Focus"
4al0.0381200Cooke Short Focus
5am0.038610.81-inch, 1.5-inch Cooke Lenses
42an574New Cooke Lens
43ax0.076695.73 inch Ross-Tessar Lens
44ay0.066694.22.6-inch Zeiss-Tessar
79ayroe0.152Roe 6-inch
6b0.2179.48-inch Bache Doublet, Voigtlander, reworked by Clark
45bc0.40616-inch Boller & Chivens
46bi0.03814461.5 inch Ross (short focus)
7bm0.0753843-inch Ross
47bo0.06358002.5 inch Voigtlander (Little Bache or "Bachito")
8br0.22048-inch Brashear Lens
9c0.38411-inch Draper Refractor
48ca0.06355962.5 inch Cooke Lens
10dPositives
49darnor890Darlot Lens North
50darsou890Darlot Lens South
11dnb0.042577.3Damons North Blue
12dnr0.042579.7Damons North Red
13dny0.042576.1Damons North Yellow
14dsb0.042574.5Damons South Blue
15dsr0.042579.7Damons South Red
16dsy0.042581.8Damons South Yellow
51ee0.1023304-inch Voightlander Lens
52er0.0763903-inch Elmer Ross
17fa0.03812981.5-inch Ross-Xpress
18h0.659.624-inch Clark Reflector
53hslHenrietta Leavitt Logbooks. No plates.
19i0.2163.38-inch Draper Doublet, Voigtlander Reworked by Clark
20ir0.21648-inch Ross Lundin
21j0.69824-33 in Jewett Schmidt
54jdar0.0765603-inch Darlot (Series renamed from j)
86ka0.07112002.8-inch Kodak Aero-Ektar
87kb0.07112002.8-inch Kodak Aero-Ektar
88kc0.127650K-19 Air Force Camera
89kd0.127650Air Force Camera
90ke0.0711160Eastman Aero-Ektar K-24 Lens on a K-19 Barrel
91kf0.0711160Eastman Aero-Ektar K-24 Lens on a K-19 Barrel
92kg0.0711160Eastman Aero-Ektar K-24 Lens on a K-19 Barrel Formerly KE
93kge0.0711160Eastman Aero-Ektar K-24 Lens on a K-19 Barrel Formerly KE
94kh0.0711160KE Camera with Installed Rough Focus
56m0.1275-in Voightlander Transit Photometer
22ma0.393.712-inch Metcalf Doublet
23mb0.13904-inch Cooke (1-327), 6-inch (328-1776) 3-inch Ross Lundin (2388-2722)
24mc0.497.916-inch Metcalf Doublet (Refigured after 3500)
25md0.11934-inch Cooke Lens
82me0.0386001.5-inch Cooke Lenses
26meteor0.31200
27mf0.25167.310-inch Metcalf Triplet
55miscLogbook Only. Pages without plates.
57nTransit Photometer
58nviewsLandscapes and views (Series renamed from n)
60oStellar
59oaStellar
61pEclipse Plates
81pz0.07615533 inch Perkin-Zeiss Lens
64qEmulsion and Lens Tests
62qaEmulsion and Lens Tests
63qbEmulsion and Lens Tests
29r0.0753903-inch Ross Fecker
65raPrints of Neg. Post (?) Enlargements
30rb0.075395.53-inch Ross Fecker
31rh0.075391.33-inch Ross Fecker
32rl0.12904-inch Ross Lundin
66ro390
67rp
68s1.5226.360 inch Common
33sb1.52660-inch Rockefeller Reflector
34sh1.52661-inch Wyeth Reflector
77solarSolar (Series Discarded)
69spSpectrum SH Plates
70sqSB Spectrum Plates
71tSky Photometer
72vqHeinrich VQ (Spectrograph)
74wSlit Spectrograph
73waCooke Lens #11366 (Western Association)
78wwHeinrich Camera Lens
35x0.3342.313-inch Boyden Refractor
75y0.2038-inch Clark Doublet
76z0.3313-inch Boyden Refractor (spectrum plates)