| | M2 Globular | M2 | Messier 2 | NGC 7089 | | Although just beyond the reach of the naked eye, this globular is one of the largest known, spanning about 175 light years. Most of its 150,000 stars are red and yellow giants, the brightest being 13.1 mV. At Class II, this globular has one of the densest cores. | | |
| Details: | | Night of: | Sunday October 29, 2017 | Site: | Idyllwild | Local Time: | 7:30 PM | Oct 29, 2017 | Altitude: | 55° | | RA: | 21h 33m 27s | Declination: | -0d 49' | | Distance: | 37,500 light years | Magnitude: | +6.3 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: | 1880 x 1420 pixels (2.7 MP) | | 45.4' x 34.3' | Exposure: | 45 sec | |
Stacked Frames: | 12 | Total Integration: | 9 minutes | | Shot Info: | moon only 15 deg away
autoguiding | | Post Processing: | tshirt flats
stacked with AA6 |
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