Jun 17, 2020 Waikoloa, HI (map)
28cm f/10 SCT, NexStar 11" GyPSy @ 127x
Bright, large, round, brighter to the center without an obvious core, NGC4478 visible 9' southwest
Apr 18, 1999 Organ Pipe National Monument, AZ (map)
20cm f/10 SCT
Round, obviously brighter than M84 or M86, obvious core, stopped back by on 18 Apr 99 00:52 to complete the drawing and add NGC4476 and NGC4478 that had disappeared in the haze
Mar 18, 1781
Nebula without star, in Virgo, below & very near a star of eighth magnitude, the star having the same Right Ascension as the nebula, & its Declination was 13d 42' 21"" north. This nebula appears at the same luminosity as the two nebulæ Nos. 84 and 86 [M84 and M86]."
- Connaissance des Temps, 1781
Drawings, descriptions and CCD photos are copyright Andrew Cooper unless otherwise noted, no usage without permission.
Positional and some physical information is from the NASA/IPAC Extragalactic Database (NED) which is operated by the Jet Propulsion Laboratory, California Institute of Technology, under contract with the National Aeronautics and Space Administration.
Additional object data from the SIMBAD database, operated at CDS, Strasbourg, France.
The Digitized Sky Survey was produced at the Space Telescope Science Institute under U.S. Government grant NAG W-2166. The images of these surveys are based on photographic data obtained using the Oschin Schmidt Telescope on Palomar Mountain and the UK Schmidt Telescope.
Dark nebulae data from E.E. Barnard, A Photographic Atlas of Selected Regions of the Milky Way. Ed. Edwin B. Frost and Mary R. Calvert. Carnegie Institution of Washington, 1927
Object descriptions of Rev. Webb from Celestial Objects for Common Telescopes sixth edition, Rev. T.W. Webb, 1917, edited by Rev T.E.Espin.
NGC & IC object notes from Harold Corwin licensed under a Creative Commons Attribution-ShareAlike 3.0 Unported License. Additional supplementary material for NGC and IC catalog objects from Courtney Seligman with non-commercial use allowed, found at https://cseligman.com