Lum
380 min (76 x 5 min)
Red 60 min (12 x 5 min)
Green 60 min (12 x 5 min)
Blue 66 min ( 8 x 7.5 min)
Software
CCDSoft, CCDOPS,
DitherMatic was used to
dither the luminance
layer,
Sigma Clip (pre beta 11), Paint
Shop Pro,
Photoshop CS w/ the Fits
Liberator plug-in,
GradientXTerminator and
Noel Carboni's actions.
Comment
North is to the
right.
Discovered by
William Herschel in 1784. NGC 7331 is often touted as a twin
to our own Milky Way. About 50 million light-years distant in the
northern constellation Pegasus, NGC 7331 was recognized early on as
a spiral nebula and is actually one of the brighter galaxies not
included in Charles Messier's famous 18th century catalog.
