| Object : | M53, Globular Cluster |
| Coordinates/Direction : | RA: 13h12m, DEC: +18o10' |
| Object size : | 13' |
| Object magnitude : | 8.3 |
| More to know : |
Wikipedia:
https://en.wikipedia.org/ wiki/ Messier 53 |
| Date : | 2020-03-20 |
| Time (UT) : | 23:55 to 00:15 |
| Mount : | EQ6 controlled by EQMOD |
| Guide : | PHD2 in dithering mode, Guide telescope 400 mm f/6.3, camera QHY5 |
| Lens/telescope : | TS130, 910mm f/7 |
| Corrector/Barlow : | Flat field corrector 3" x1 |
| Field (FOV) : | 2.25x1.5 degree, before cropping |
| Filter : | none |
| camera : | Canon 6D, controlled by APT software |
| Film/CCD : | Raw |
| Exp. time : | 93x60 seconds, ISO1600 |
| Image process tool : | AstroImageJ, Fitswork, IrfanView |
| Processing : | demosaic, synthetic flat calibrated, hot pixel removed by dithering, level |
| Weather : | clear with drifting clouds |
| Site : | Sweden, Stockholm, Hagsätra. Bortle class 9 |
| Comment : |
One more object in Southern direction.
This is M53, a globular cluster and it's 58'000 light years far away. |
| Date : | 2020-03-20 |
| Image process tool : | AstroImageJ, Fitswork, IrfanView |
| Processing : | demosaic, synthetic flat calibrated, hot pixel removed by dithering, level, crop |
| Comment : |
Zoom in to the core of M53, 1:1 pixel relation.
Compare with the Hubble image on the link above, it's a difference but I took this from our balcony ! |
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