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Home > Astrophotography > Double Cluster (NGC 869 & 884)
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| Object: | The Double Cluster in Perseus, NGC 884 & 869 |
| Date: | 12/5/2005 |
| Site: | Palo Alto, CA |
| Condition: | Clear sky, 37 °F |
| Optics: | R200SS with Vixen coma corrector |
| Filters: | none |
| Camera: | Nikon D50, NR off |
| Exposure/ISO: | 4 exposures (total 13 minutes) @ ISO 200, plus 1 exposure (3 minutes) @ ISO 400 |
| Processing: | Photoshop: LFF subtraction, stacked in KIS 4.2, levels |
| Comments: | These 2 clusters are about 7000 light-years from us. The two are separated by 0.5 deg (roughly the diameter of a full moon) as viewed from Earth. They look impressive in most telescopes under low power. Though they are among the best known NGC objects, Messier somehow missed them in his famous catolog. NGC 869 is to the left (west) in the above photo. South is up. |