Abell 31


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Abell 31

Object Data

Object type: Planetary Nebula
Constellation: Cancer
Distance: 2,000 light years
Notes: very large but dim object;  also cataloged as Sharpless  290

Exposure Data

Date: 2/28/17 (imaged over 3 nights)
Location: Backyard Observatory, Carlsbad, CA
Telescope: TEC 140, 980mm fl at f/7
Camera: SBIG ST10-XME with Astrodon narrowband filters (3nm)
Mount: Losmandy G-11
Exposure time: 4 hrs Ha/  4hrs OIII/ 4 hrs NII
Exposure time total: 12 hours
Notes: FOV = 52 x 35 arcmin
Mapped red to NII, Blue to OIII, and Green to Ha


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