Globular cluster M15
Edit Page
Report
Scan day: 17 February 2014 UTC
23
Virus safety - good
Description: A large image and a discussion of M15 as a candidate for an example of core collapse.
The globular cluster Messier 15 (NGC 7078) in Pegasus, shown from a 30-second red-light exposure (through clouds) with a Tektronix 2048x2048 CCD at the prime focus of the 4-meter Mayall telescope of . North is at the top and east to the left, for direct comparison with a chart or eyepiece view. The image has been block-averaged to 512x512 for this presentation, which uses a logarithmic intensity transformation to preserve information across a wide dynamic range. The field is 7.1 arcminutes square, showing the inner quarter of the original area images (pixels were averaged 2x2 for this display). Even with this short exposure, the bright core of the cluster saturated the CCD strongly enough for some of the charge to bleed along columns of the chip; the brightness has been set to conveniently hide the problem.
Size: 818 chars
Contact Information
Email: —
Phone&Fax: —
Address: —
Extended: —
WEBSITE Info
| Page title: | Globular cluster M15 |
| Keywords: | |
| Description: | |
| IP-address: | 67.43.3.250 |
WHOIS Info
| NS | Name Servers: NS1.UA.EDU 130.160.4.4 BAMA.UA.EDU 130.160.4.114 |
| WHOIS | |
| Date | activated: 12-May-1988 last updated: 19-Feb-2013 expires: 31-Jul-2014 |