Dec 29, 2019 Kaʻohe, Mauna Kea, HI (map)
46cm f/4.5 Newtonian, Deep Violet @ 175x
Very large, spanning the 1/2° field, a bright core with a large halo, darker rifts in the halo betray the spiral arms, the core is about 5' across
Oct 22, 2006 TIMPA, Avra Valley, AZ (map)
12x36 Canon Image Stabilized Binoculars
Easy to find, bright, elongated with a brighter core, M82 visible 40' north
Jun 12, 1999 Pinal Peak, AZ (map)
20cm f/10 SCT
Large, bright, obvious core and evenly bright outwards, two nice stars on the south edge to confuse supernova hunters
Rev. T.W. Webb
May 19, 1885 Hardwick, Herefordshire, England (map)
Two neb. ½° apart[M81 and M82]; 81 bright, with vivid nucleus, finely grouped with small stars, two of which are projected upon the haze, to which h. gives nearly 15' of length. Two little pairs sp, making the field very interesting. The nearer is Σ1387: 9.5, 9.5: 269°.6: 8"".9; the further is Σ1386: 8.2: 8.2: 296°: 2"". 82 (Bode's neb.), curious narrow curved ray. D'A., 7' x100"", two nuclei, and sparkling as if resolvable, which 81 is not. Huggins finds both spectra continuous, but deficient at the red end, like the Androm. neb., etc. L.P., spiral; spect. one absorption and two bright lines.
― Celestial Objects for Common Telescopes, T. W. Webb, 1917
Oct 28, 1831
Extremely bright; extremely large; elongated, at position angle 156 deg; gradually brighter and then very suddenly much brighter toward the middle, with faint rays of light nearly to extremities of field (15'). The most condensed part is 4' long and 3' broad.
Feb 9, 1781
A nebula near the ear of the great Bear, on the parallel of the star d, of fourth or fifth magnitude: its position was determined from that star. This nebula is a little oval, the center clear, & one can see it well in an ordinary telescope of 3.5 feet. It was discovered by M. Bode at Berlin on December 31, 1774, & by M. Méchain, in the month August 1779."
― Connaissance des Temps, 1781
Johann Elert Bode
Dec 31, 1774 Berlin Observatory, Germany (map)
On December 31, 1774, I found through the seven-foot telescope, closely above the head of UMa, east near the star d at its ear, two small nebulous patches separated by about 0.75 degrees, the positions of which relative to the neighbored small stars are shown in the tenth figure. The patch Alpha (M81) appears mostly round and has a dense nucleus in the middle. The other, Beta, on the other hand, is very pale and of elongated shape. I could determine the separation of Alpha to d as 2°7', to Rho as 5°2' and to 2 Sigma as 4°32' with some acuracy; Beta was too faint and disappeared from my eyes as soon as I shifted apart the halves of the objective glass.
2 objects found within 120'
Drawings, descriptions, and CCD photos are copyright Andrew Cooper unless otherwise noted, no usage without permission.
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