Andrew Cooper
Jul 20, 2023    Oregon Star Party, Ochoco Mts, OR (map)
25cm f/4.5 Newtonian, Holoholo @ 127x
Seeing: 7 Transparency: 6 Moon: 0%

Small, very bright and obvious, round, 30" diameter, distinct blue color, well defined outer margin, no central star visible, no other structure noted

Andrew Cooper
Aug 27, 2006    TIMPA, Avra Valley, AZ (map)
28cm f/10 SCT Gypsy

Beautiful! A distinct light blue color is the first impression, bright! holds magnification well revealing a two shell structure, a bright round inner shell and a quite faint outer shell, no central void, no central star observed even at 350x (8mm Radian)

Andrew Cooper
Sep 27, 2003    Las Cienegas NCA, Pima Co., AZ (map)
46cm f/4.5 Deep Violet

Fairly bright, slightly bluish disk, no other detail obvious, averted vision appears to show a star involved with the nebulosity but not centered, the edges of the disk are well defined

Rev. T.W. Webb
May 19, 1885    Hardwick, Herefordshire, England (map)
24cm Reflector

Small but very bright. La. sees nucleus and two oval rings, confirmed by Lick photos, 10 sec. exposure showing nucleus and one ring, 20 sec. two rings. The outer ring seems to grow in intensity, as exposure lengthens, much more slowly than inner ring and nucleus. Barnard nucleus var. 12-15? My 9-1/3in. shows bluish disk with wooly border, and suspicion of dark centre. Huggins, 8-in.; annular, greenish blue; spectrum four bright lines. Three small stars np, nearest 12.6 : 63°.2 : 51".3.

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

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

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