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16/12/2017  - 7/1/2018

STEPHAN'S QUINTET  & NGC7331

This image shows both Stephan's Quintet and NGC7331 group.  Stephens Quintet is the smaller cluster of galaxies North East of image centre, NGC7331 group is the larger galaxy group South West of Centre. The ED80 Scope this is taken combined with teh Atik 460 sensor is fairly wide angle for this image so I will revisit this area at another time with the SW200p.

 

Stephan’s Quintet.  is a group consisting of four interacting galaxies – NGC 7317, NGC 7318A, NGC 7318B and NGC 7319 – and a visual companion, the spiral galaxy NGC 7320. The galaxies are located in Pegasus constellation. Four of the five galaxies in Stephan's Quintet form a physical association,Hickson Group 92, and will likely merge with each other. Radio observations in the early 1970s revealed a mysterious filament of emission which lies in inter-galactic space between the galaxies in the group. This same region is also detected in the faint glow of ionized atomic hydrogen seen in the visible part of the spectrum as a green arc.

NGC 7331 (also known as Caldwell 30) is a about 40 million light years away in the constellation Pegasus . The other members of the group are NGC 7335, 7336, the barred spiral galaxy NGC 7337 and the elliptical galaxy NGC 7340.

Equipment:

Telescope: SW ED80 Pro

Guide Scope: SW ST80 with Orion Starshoot

Mount: NEQ6 Pro

Camera: Atik 460ex Mono Cooled -10c

Filter Wheel: Atik FW2

Filters: Baader LRGB

Luminence 10 x 600 seconds

Red 8 x 600 seconds

Green 8 x 600 seconds

Blue 8x 600 seconds

Total Integration 5 hours 40 minutes