Helix Nebula (or NGC 7293)

Posted by Mahdi Naseri
on Saturday, September 19, 2020
Helix or NGC 7293 is one of the closest planetary nebulae to the Earth with distance of 655 light year. Its apparent radius is just less than the Moon's apparent dimensions and hence it could be considered as an extended planetary nebula, in contrast with most planetary nebulae, which usually look extremely small even via a telescope.

Telescope: GSO Newtonian
F: f/4
Focal Length: 800mm
Exposure: 30*1 min
Mount: EQ5 SynScan
Autoguiding: None
Camera: Canon EOS 50D modified
ISO: 3200
Filter: Orion SkyGlow Imaging Filter
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