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StarCo by Ludo Coppens                                        © 2014-2023                                   ludo.coppens(at)kineco.be

Object name

Medusa Nebula

Photograph


Other designations

Abell 21, PK 205+14.1

Date

2019-03-21+ 2014-02-02

Constellation

Gem

Telescope or lens

Meade LX200 10” @f/6

Coordinates


Camera

Starlight Xpress MX716 and SXVR-H694

Apparent magnitude

14.1m

Binning

2x2 (MX716) and 3x3

Surface brightness

16.4m

Filters

H-alpha, OIII

Dimensions

10’x6’

Exposure

33x4m (MX716), 22x2m (Ha), 55x2m (OIII)

Distance

800ly

Details

Luminosity = Ha, R = Ha, G = OIII, B = Ha+OIII