NGC 3239

Full resolution (1600x1200 px  0.5MB)

150% resolution (0.9MB)

Object identification (0.5MB)

Stretched luminance (0.9MB)

Object data of NGC3239

Object type: Galaxy (Irr)
Size: 4.5' x 2.4'
Magnitude: 11.7 mag
Constellation: Leo
Distance: 25 Mio Ly
Notes: NGC 3239 (Arp 263) is an irregular galaxy in a distance of 25 Mio light years. The galaxy as we see it now is most likely the result of a galaxy merger. It shows a possible remnant of disk structure, tidal tails of stars (even though there are no nearby companions), many star-forming regions including a giant one, and young blue star clusters, indicating recent star formation.

The object identification image shows besides NGC 3239 many CGCG galaxies, the distant galaxy cluster WHL J102522.5+170225 (z=0.269, 3.0 billion light years) and the extremely distant quasar SDSS J102530.36+170852.9 (z=4.09, 11.8 billion years light travel time).

Exposure data

Date: 2014-03-25 + 27 + 28 + 29 + 30 + 2014-04-02 + 22 + 26 + 2014-05-01
Location: Nussbach / Austria (400m)
Telescope: 12" Newtonian telescope (f=1120mm)
Camera: ST2000XM with CFW8 and Baader Filters
Binning: L 1x1 / RGB 1x1
Mount: ASA DDM85
Exposure time: L 94x12min / R 23x12min / G 23x12min / B 23x12min
Exposure time total: 32h 36min
Notes: This image was captured for the TBG group. Despite the fact that no new dwarf galaxies were discovered around NGC 3239, this image was mentioned in a scientific publication.