Location & Date	Backyard, Abbott Observatory- Long Island, NY,  December, 2020
Telescope	TMB130SS F/7 APO, Moonlite focuser, Losmandy G11 Gemini Image scale 1.54 arcsec/pixel
Camera	SBIG ST-10XME Baader  Ha  SII OIII filters CCD temp -15°C
Exposures	Ha-9x10m  OIII-9x10m  SII-9x10m  Bin 1x1
Planning & Acquisition	Image planning - Sequence Generator Pro Image acquisition - Sequence Generator Pro w/PinPoint & PHD2 (guiding)
Processing	CCDStack - calibration, debloom, align, normalize, combine, deconvolution Adobe CS4 -  Color Image composition, Noise reduction, JPEG conversion Mapped color Ha=green  SII=red  OIII=blue

  Abell 31, also known as SH2-290, was discovered by George Abell in 1955 and is a planetary nebula in the constellation Cancer with a distance of approximately 2000 light years. This is one of the larger planetary nebulas in the sky but has a very low surface brightness of Mag 26 due to its age and the fact that as it expands, it's also dispersing at high speed as evident by the large defined edge bowshock seen on the bottom.