| | M12 Globular Cluster | M12 | Messier 12 | NGC 6218 | | This globular cluster is about 75 light years across, and its brightest of its 200,000 stars are mV 12, with the brightest 25 stars averaging 14.0 mV. At Class IX it is has a loosely compacted core. | | |
| Details: | | Night of: | Wednesday July 23, 2014 | Site: | Palomar Mountain | Local Time: | 12:15 AM | Jul 24, 2014 | Altitude: | 40° | | RA: | 16h 47m 14s | Declination: | -01d 57' | | Distance: | 15,700 light years | Magnitude: | +7.7 mV | Size: | 16' |
| | Camera Settings: | | Telescope: | 9.25-SCT | Camera: | Orion Starshoot DSI2 + 0.5x Reducer | f/ratio: | f/5 | Pixel Scale: | 1.49 arcsec | Image Size: | 762 x 568 pixels (0.4 MP) | | 18.9' x 14.1' | Exposure: | 10 sec | |
Stacked Frames: | 24 | Total Integration: | 4 minutes |
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