Berkeley 51

100%  resolution (3.0MB)

Object identification (3.0MB)

200% crop of PN K 3-57 (0.1MB)

DSLR widefield image

Object data of Berkeley51

Object type: Open star cluster (I 1 p)
Size: 2'
Magnitude: -
Constellation: Cyg
Distance: 18,000 Ly
Notes: Berkeley 51 is a very young open star cluster located approximately 18,000 light-years away in the constellation Cygnus. This cluster is heavily obscured by the dust of the Milky Way which causes the stars to be strongly reddened: E(B-V) = 1.8mag.

The field around Berkeley 51 is rich in red emission nebula, and also a small planetary nebula (PN K 3-57) can be found (see object identification image).

Exposure data

Date: 2021-08-02 until 2021-08-13 (5 nights)
Location: Nussbach / Austria (400m)
Telescope: 12" Newtonian telescope (f=1120mm)
Camera: QSI 660wsg-8 with Astrodon filters
Binning: L 1x1 / RGB 1x1
Mount: ASA DDM85
Exposure time: L 47x8min / R 19x8min / G 19x8min / B 19x8min
Exposure time total: 13h 52min