Prev entry: Veil Nebula, M92, and NGC6229 on August 24, 2005
Next entry: M53, M3, and NGC 4631 on May 03, 2006
h Per, NGC7331, M56, and NGC281 on September 28, 2005
![](javascript:ImageWindow("http://www.alpheratz.net/images/observing/h_Per_2005-09-28.jpg",620,588,"external"))
h Per on September 28, 2005. Prime focus (f/8.0). Total integration time 164×8.53 sec = 23 min. This is central core of h Per, an open cluster of about 320 stars that is stunning in a pair of binoculars or at low magnification in a telescope. It is about 2,230 pc distant.
![](javascript:ImageWindow("http://www.alpheratz.net/images/observing/NGC7331_2005-09-28.jpg",618,550,"external"))
NGC 7331 on September 28, 2005. Prime focus (f/8.0). Total integration time 430×8.53 sec = 61 min.
![](javascript:ImageWindow("http://www.alpheratz.net/images/observing/M56_2005-09-28.jpg",600,575,"external"))
M56 (NGC 6779). Total integration time 424×8.53 sec = 60 min. This globular cluster lies roughly 9,800 pc distant. The horizontal branch (HB) of this cluster is at V magnitude 16.3, which is the magnitude at which large numbers of cluster stars become visible.
![](javascript:ImageWindow("http://www.alpheratz.net/images/observing/NGC281_2005-09-28.jpg",590,590,"external"))
NGC 281 on September 28, 2005. Prime focus (f/8.0). Total integration time 209×8.53 sec = 30 min. NGC 281 is the nebulosity associated with the open cluster IC 1590
Post a comment