NOAO < IMAGE GALLERY < Double cluster

h and chi Persei

[Double cluster]

About this image

The double cluster in the constellation Perseus, normally known by its Greek designation transliterated. chi Persei (NGC884, on the left) and h Persei (NGC869) are about 7000 light-years away and less than 100 light-years apart. Although open clusters are quite common, this pair is exceptional due to the large number of young bright O and B stars in each, and their closeness whilst still being clearly distinguished. This color picture was made from CCD images taken in September 1997 at the Burrell Schmidt telescope of the Warner and Swasey Observatory of the Case Western Reserve University, located on Kitt Peak in southwestern Arizona.

More: stars page, open clusters page.


Minimum credit line: N.A.Sharp/NOAO/AURA/NSF

Downloadable versions:
593 x 400 88 kb color JPEG (on this page)
1518 x 1024 400 kb color JPEG
4050 x 2732 1.9 Mb color JPEG
4050 x 2732 10.8 Mb 8-bit color TIFF
4050 x 2732 32.4 Mb 24-bit color TIFF
(see NOAO Conditions of Use)

Comments by e-mail to images@noao.edu