Positive on glass

Made:
1903 in Crowborough
photographer:
Isaac Roberts

Positive on glass, enlarged at the National Observatory in Paris, of: Nebula M.94 Canum Venaticorum (R.A. 12h 46m 13.1s, Dec. N.41 degrees 39.5') enlarged 6 times, scale 1mm to 14 seconds of arc, taken at Crowborough, Sussex, on May 21st, 1903, between sidereal time 15h. 15m and 16h, 15m with an exposure of one hour

Details

Category:
Astronomy
Object Number:
1906-87
Materials:
glass
type:
black-and-white prints (photographs), astrophotographs and galaxies
credit:
Mrs. Isaac Roberts