Thank you for your patience while we retrieve your images.
Visitors 632

6 of 41 photos
Photo Info

Dimensions1663 x 1252
Original file size1.87 MB
Image typeJPEG
Double Cluster in Perseus - NGC 869 and NGC 884

Double Cluster in Perseus - NGC 869 and NGC 884

APM/TMB 130/780
Field Flattener
Astrodon Gen 2 LRGB
L: 12x5min (2x2)
RGB: 6x5min each (2x2)
Imager Temp -10C
Cropped for Framing

Link to Larger JPEG

The Double Cluster in the constellation Perseus, normally known by its Greek designation transliterated. chi Persei (NGC 884, on the left) and h Persei (NGC 869) are about 7000 light-years away and less than 100 light-years apart. The Double Cluster is approaching earth at the speed of 21 km/s.

The Double Cluster is surrounded by one of the largest concentrations of red supergiants in the sky, and therefore was a fertile site of early red giant research. There are, however, an almost equal number of blue and red supergiants in the clusters.

September 13, 2010