7 October 2016 | A Galactic Rose

Image Data
  • CCD: Andor Tech DZ436 (2048 x 2048 pxl)
  • Image Type, Orientation: RVB Composite, North is at 12:00h
  • Exposure time: R: 15 x 180 sec., V: 15 x 210 sec., B: 15 x 300 sec, (all together = 172,5 min), 1×1 bin
  • Exposure date: September 2012
  • Location: Skinakas Observatory at Crete, Greece
  • Filter: Custom Scientific RBV-standard filters
  • Instrument: Modified RC-129 cm-Telescope in secondary focus (9867 mm)
  • Seeing (FWHM): 1.45″


This beautiful image with bright shining stars and a rose shape is showing Arp 273, a group of interacting galaxies, 300 million (!) light years away from earth in the constellation Andromeda.

The larger of the spiral galaxies, known as UGC 1810, is about five times more massive than the smaller galaxy. It has a disc that is tidally distorted into a rose-like shape by the gravitational pull of the companion galaxy below it, known as UGC 1813.

The smaller galaxy shows distinct signs of active star formation at its nucleus, and it is thought that the smaller galaxy has actually passed through the larger one.

Arp 273 was first described in the Atlas of Peculiar Galaxies, compiled by Halton Arp in 1966.

Check out this short but impressive zoom sequence of Arp 273 (Source).

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