Abell 31 is an ancient planetary nebula in the constellation of Cancer. It is estimated to be about 2,000 light years away. Although it is one of the largest planetary nebulae in the sky, it is not very bright.

Imaging telescopes or lenses: Boren-Simon PowerNewt 8
Imaging cameras: Atik 460EX
Mounts: Sky-Watcher EQ-6 Pro
Guiding telescopes or lenses: Teleskop-Service Finderscope
Guiding cameras: QHYCCD QHY5
Focal reducers: ASA 2″ x 0,73 Corrector/Reducer 2KORRR
Software: PixInsight, Maxim DL, AstroTortilla
Filters: Astronomik SII 12nm, OIII 12nm, Astronomik H-alpha 12nm
Accessories: Lunatico Astronomia Seletek Armadillo
Dates: March 29, 2014
Frames:
Astronomik H-alpha 12nm: 5×600″ -15C bin 1×1
OIII 12nm: 5×600″ -15C bin 1×1
Astronomik SII 12nm: 5×600″ -15C bin 1×1
Integration: 2.5 hours
Flats: ~20
Bias: ~500

Author: Samuli Vuorinen

AstroPhotography of the day by SPONLI
5 Abril 2014