M25, IC4725

It is unclear why M25, a reasonably conspicuous open cluster in the constellation Sagittarius, did not rate an entry in the New General Catalogue and is thus relegated to only an Index Catalogue number. It is a middle-aged cluster at around 90 million years, somewhere around two thousand light-years away and twenty-odd light-years across. This picture is a combination of six frames taken in the BVR pass-bands in June 1996 at the Burrell Schmidt telescope of Case Western Reserve University's Warner and Swasey Observatory located on Kitt Peak, near Tucson, Arizona, during the Research Experiences for Undergraduates (REU) program operated at the Kitt Peak National Observatory and supported by the National Science Foundation. Image size 42.3 arc minutes.

Credit:

Hillary Mathis, Vanessa Harvey, REU program/NOIRLab/NSF/AURA

About the Image

Id:noao-m25
Type:Observation
Release date:June 30, 2020, 9:34 p.m.
Size:2500 x 2500 px

About the Object

Name:IC 4725, M25
Constellation:Sagittarius
Category:Star Clusters

Image Formats

Large JPEG
4.4 MB
Screensize JPEG
805.5 KB

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Wallpapers

1024x768
827.6 KB
1280x1024
1.3 MB
1600x1200
1.7 MB
1920x1200
1.9 MB
2048x1536
2.5 MB

Coordinates

Position (RA):18 32 2.70
Position (Dec):-19° 6' 49.49"
Field of view:42.15 x 42.30 arcminutes
Orientation:North is 2.6° left of vertical


Colors & filters

BandTelescope
Optical
R
Burrell Schmidt Telescope
Optical
V
Burrell Schmidt Telescope
Optical
B
Burrell Schmidt Telescope