NGC 5899 + NGC 5900 + Holmberg 701

Full resolution (1600x1200 px  480kB)

150% resolution (700kB)

Object identification (500kB)

Inverted image showing possible stellar streams (330kB)

DSLR widefield image

Object data of NGC5899

Object type: galaxy (SBc)
Size: 3.3' x 1.4'
Magnitude: 12.5 mag
Constellation: Boo
Distance: 118 Mio Ly
Notes: NGC 5899 builds a non-interacting pair with NGC 5900.  But the above image shows some signs of interaction in NGC 5899 (better visible in the inverted image). East of NGC 5899 one can see a loop. The faint galaxy SDSS J151510.91+420334.6 seems to be a part of this loop. So, maybe this loop is a stellar stream.

Also NGC 5900 shows some interesting structures in the inverted image.

The galaxy group near the bottom right corner of the above image, consisting of NGC 5893, NGC 5895 and NGC 5896 is listed as Holmberg 701 in the Catalogue of Double and Multiple Galaxies.

The brightest members of the galaxy cluster NSCS J151456+420852 (distance = 3.6 billion light years) are clearly visible, as indicated in the object identification image.

Exposure data

Date: 2011-04-30 + 2011-05-05+06+07+08+23+25+29+30
Location: Nussbach / Austria (400m)
Telescope: 12" Newtonian telescope (f=1120mm)
Camera: ST2000XM with CFW8 and Baader Filters
Binning: L 1x1 / RGB 1x1
Exposure time: L 51x12m / R 13x12m / G 13x12m / B 13x12m
Exposure time total: 18h 00m