Cosmic perspective : PN M97 & M108

Image Description and Details :

A classic of the spring sky: the duo of the galaxy M108 with the Owl planetary nebula (M97) in Ursa Major.
M97 is 2000 LY away, while M108 is 32 millions LY away (16.000 times more distant).

I completed the LRGB with exposures with Ha and especially OIII, in order to gain signal on M97: the much more faint outer ring of M97, not so often seen, is visible.

Takahashi TSA102 - AZEQ6 - Atik Cameras AtikOne 6.0 - Filters Astronomik (6nm Ha / OIII)
L : 36 x 600s bin1
RGB : 3 x 24 x 300s bin 2
Ha : 12 x 600s bin 1
OIII : 18 x 600s bin 1 + 12 x 600s bin2
Total : 19h

3, 4 & 5 april 2021 - Fouras (France)
Traitement : Pixinsight & Photoshop

Copyright: Jean-Baptiste Auroux