Andrew Cooper
Mar 2, 2011    Hale Pohaku, HI (map)
46cm f/4.5 Newtonian, Deep Violet @ 175x
Seeing: 6 Transparency: 6 Moon: 0%

Large!, bright, with a bright core, 10'x4' north-south, NGC4248 is 15' northwest

Andrew Cooper
Jun 7, 2005    Whipple Obs., Green Valley, AZ (map)
46cm f/4.5 Deep Violet

Big!! Bright! extended 4:1 northwest-southeast, bright central region 5'x3' surrounded by a fainter halo, distinct almost stellar core, subtle hint of spiral structure visible at ends of central region, NGC4248 visible 13' west

Andrew Cooper
Jun 13, 1999    Pinal Peak, AZ (map)
20cm f/10 SCT

Large, extended north-south with obvious core

Rev. T.W. Webb
May 19, 1885    Hardwick, Herefordshire, England (map)

Large, oval, bright, best defined at sides; nucleus s, like Androm. neb. on small scale. D'A., 10'x2½'. Spectrum continuous. L.P., spiral.

― Celestial Objects for Common Telescopes, T. W. Webb, 1917

William Herschel
Mar 9, 1788    Observatory House, Slough (map)

Very brilliant. Bright Nucleus. With faint milky branches north preceding and south following. 15' long and to the south following running into very faint nebulosity extending a great way. The nucleus is not round.

― SEDS website

Pierre Méchain
Jan 6, 1783    

In July 1781 I found another nebula close to Ursa Major, near the star No. 3 of Canes Venatici and 1 deg further south."

― Messier's correspondence to Bernoulli

Drawings, descriptions, and CCD photos are copyright Andrew Cooper unless otherwise noted, no usage without permission.

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