Graff's Cluster
Image information:
| Date: | 08/24/2025 |
| Equipment: | Altair Hypercam 533C colour camera through Sky-Watcher Esprit 80 ED telescope on Pegasus Astro NYX-101 mount. The telescope was working at f3.95 using TS 2" 0.79x corrector / reducer. |
| Image type: | OSC |
| Exposure time: | 60X1min, gain 250 (0.8e/ADU) |
| Comment: |
Object information:
|
Object designations: |
Graff's Cluster, IC 4756 |
|
Object type: |
Open cluster |
|
Object size: |
48' |
| Constellation: |
Serpens
|
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Comment: |
Graff's Cluster is a large and bright open cluster visible to the naked eye under dark skies. It contains some 80 stars in the diameter of 15 ly. At estimated age of 800 million years it is one of the older open clusters. IC 4756 is about 1600 ly distant from us |
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