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3953, a spiral galaxy in ursa major
3953 is a spiral galaxy of type SBb (barred). Its apparent diameter is 6.6
arcmin and the brightness is 10.1 magnitude. The color data for this image is
apparently offset in some way, resulting in the rainbow effect across the bar.
2003 June 15, 16
at f/9 on AP 900GTO mount, guided with ST-4 on a guidescope.
Camera: SBIG ST-10MXE
and CFW color wheel, controlled with MaxIm
R, G, and B exposures 5
x 5 min.
Frames calibrated and
RGB combined in MaxIm. Final
processing with Levels and
Curves in Photoshop.