Abell 22 or PK 215 +11.1 is a very faint Planetary Nebula situated in the constellation of Canis Minor.Its central parts are sized 2.1 x 1.4 arc-minutes,wheres its vey dim Ha-shell measures about 6x4 arc-minutes.
The central nebula resembles the famous Little Dumbbell-Nebula in the constellation of Perseus (https://www.messier-objects.com/messier-76-little-dumbbell-nebula/).
Little is known about Abell 22,even its real distance is speculative,but it seems to be greater than 10.000 light years.The strongest emissions take place in H-alpha,whereas the OIII-ones are very weak.
Gearge Abell noted it first in his catalogue in 1966.
position (epoch 2000):
RA.: 07h 36m 07,9s
Decl.: +02° 42' 27"
LR(+Ha)GB image from:
a total of 20.66 hours
80cm f/7 AstroOptik Keller corrected cassegrain FLI Proline 16803 Astrodon LRGB GenII filters
Prompt 7 CTIO/UNC Chile,remote controlled
image processing: Bernd Flach-Wilken
here you see Abell 22 in a 84% FOV of our equipment.
To get full resolution click HERE
here you can see a more detailed version of this Planetary Nebula: