General Information

Serial #

N/A

Part Number

1

Total Parts

1

AKA

N/A

Patents

N/A

General Description

Glass, emulsion and paper.

Dimensions

Note: These reflect the general size for storage and are not necessarily representative of the object's true dimensions.

Length

28.0 cm

Width

22.0 cm

Height

N/A

Thickness

N/A

Weight

N/A

Diameter

N/A

Volume

N/A

Lexicon

Group

Photography

Category

Still images

Sub-Category

N/A

Manufacturer

AKA

Harvard

Country

United States of America

State/Province

Massachusetts

City

Cambridge

Context

Country

United States of America

State/Province

Massachusetts

Period

Plate taken January 4, 1902

Canada

Unknown

Function

Photographic record of the Orion constellation region of the "Map of Sky".

Technical

A note on the coordinate system. At lower right, the 6h 0o refers to 6 hrs in right ascension (RA) and 0o declination (Dec). Right ascension (R.A.) is the celestial analogue to terrestrial longitude. It is measured eastward along the celestial equator from the vernal equinox and marked in hours (abbreviated h, m, and s). Declination (Dec) is celestial analogue to terrestrial latitude and marked in degrees, minutes, and seconds. It is abbreviated 0 for degrees, ' for minutes, " for seconds of arc, north (+) or south (-) of the celestial equator.

Area Notes

Unknown

Details

Markings

Print on label "H.M. 25 HARVARD COLLEGE OBSERVATORY 6h 0o/ This photograph covers a region 30o square, and is one of a series of 115 plates covering/ the entire sky twice, as described in H.C. 71, and 185.".

Missing

Appears complete.

Finish

Photographic glass plate negative coated with photographic emulsion. Image in various shades of grey. There is a cream coloured paper with black typewritten print affixed to lower part of the glass.

Decoration

N/A