A starburst galaxy in
Columba, NGC 1808 is
about 40 million lightyears
distant. The starburst
activity, as well as the
warping of the outer spiral
arms, has been credited to
tidal interaction with
nearby galaxy NGC 1792.
It is an infrequently
imaged object, but this
rendition is the best
amateur version I could
find anywhere on the
internet.
16" RCOS @ f/11.3
Apogee U9 imager
SBIG 402 guider
Astrodon Series I LRGB

L
(RHa)GB:

L=
    6 hours,1x1
R=
   4 hours, 1x1
G=
   2.5 hours, 1x1
B=  
  4 hours, 1x1
Ha = 3.5 hours, 1x1


Data acquired at
CTIO

Processed with CCD
Inspector,
PixInsight,
and Adobe PS.
                   NGC 1808
      
 Click on image to enlarge