Type Location r.a. dec. Size Magnitude Distance
Nebula Cas 1h30.6 +58°22 10' x 3' 850 ly

Sharpless 188 (Sh2-188) also known as the dolphin nebula, is a planetary nebula in constellation Cassiopeia at a distance of about 850 light-years.


Date Telescope Binning Exp Time (s) Special processing Notes
Sept 3, 2005 Centurion
L 1:1
RGB 3:1
L 3x300
R,G,B 300
Max Entropy, LRGB, DDP