Galaxies can oribt other galaxies, as in the case of M82 which orbits it nearby neighbor galaxy M81 once every several hundred million years. Whereas M82 (not shown) is "face-on" for Earth observers, M81 is "edge-on." This edge view causes its bright central region to be obscured by clouds of gas and dust.
M82, in color, showing a reddish region undergoing a burst of star-formation
to the right of center. Image dimensions are 27 x 18 'arc.
North is up. [Meade LX200 10-inch SCT, TT CFW, SBIG ST-8E CCD,
LRGB exposure times of 180, 60, 60 and 180 seconds; 2002.04.20/21, Santa
Barbara, CA residence]
Median combine of 44 1-minute exposures, FOV = 16x11 'arc. FWHM ~3.0 "arc. Avg of two images: digital development 1% cutoff (i.e., D1), ShSh (i.e., sharpen twice) & D15, D3. [Meade 14-inch LX200GPS; Hereford, AZ, 2008.003.07]
This site opened: May 27, 2002. Last Update: March 09, 2008