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Globular Cluster |
| Object : | M56, Globular Cluster |
| Coordinates/Direction : | RA: 19h16m, DEC: +30o11' |
| Object size : | 8.8' |
| Object magnitude : | 8.3 |
| More to know : |
Wikipedia: https://en.wikipedia.org/ wiki/ Messier 56 |
M56 2016-04-11
(click on the image to get a full resolution photo in a new window) |
| Date : | 2016-04-11 |
| Time (UT) : | 23:25 to 00:53 |
| Mount : | SkyWatcher EQ6 Pro, beltdrive modified (DIY 2019) |
| Guide : | QHY5 camera with off-axis |
| Lens/telescope : | TS130 APO f/7 910mm (682mm, f/5.2), 3" focuser |
| Corrector/Barlow : | Riccardi 2.5" field flatter, x0.75. T48 connector to camera |
| Field (FOV) : | 3.0 x 2.0o (full frame) before crop |
| camera : | Canon 6D, QE=0.5, full frame, 20 Mpixel, 14 bit |
| camera temperature: | About 6o C above surrounding temperature |
| Film/CCD : | Raw, Cr2 |
| Filter : | none |
| Control system : | Mount by EQMOD, camera by APT, guide by PHD2, focuser by USB-focus, ASCOM Windows PC |
| Exp. time : | 60x60 seconds, iso800, dithering mode |
| Image process tool : | DSS, Fitswork, Irfanview |
| Processing : | crop, level, no cal dark&bias, only dithering |
| Weather : | clear |
| Comment : | M56 is as other globular clusters small islands of stars. This one much smaller and weaker compared to other objects. |
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