NGC 7331

80%  resolution (4.8MB)

120%  crop (1.5MB)

Object identification (4.8MB)

DSLR widefield image

Object data of NGC7331

Object type: Galaxy (Sbc)
Size: 10.5' x 3.7'
Magnitude: 10.4mag
Constellation: Peg
Distance: 40 Mio Ly
Notes: NGC 7331 is an unbarred spiral galaxy about 40 million light-years away in the constellation Pegasus. It is the brightest galaxy in the field of a visual grouping known as the NGC 7331 Group of galaxies. In fact, the other members of the group, NGC 7335, 7336, 7337 and 7340, lie far in the background at distances of approximately 300-350 million light years.

Four dwarf galaxies of NGC 7331 are marked in the object identification image: NGC 7331 A/B/C/D.

Exposure data

Date: 2023-09-10 until 2023-09-20 (5 nights)
Location: Nussbach / Austria (400m)
Telescope: TEC APO 200 FL with TEC flattener-reducer 0.9x (f=1500mm)
Camera: QHY 268M with Baader CMOS filters
Binning: L 1x1 / RGB 1x1
Mount: ASA DDM85
Exposure time: L 76x8min / RGB 27x8min each
Exposure time total: 20h 56min