| | 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: | Thursday July 16, 2015 | Site: | Laguna Niguel | Local Time: | 10:00 PM | Aug 15, 2015 | Altitude: | 55° | | 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: | Celestron NightScape + f/6.3 Reducer | f/ratio: | f/6.3 | Pixel Scale: | 1.45 arcsec | Image Size: | 1167 x 923 pixels (1.1 MP) | | 28.2' x 22.3' | Exposure: | 10 sec | |
Stacked Frames: | 23 | Total Integration: | 4 minutes |
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