Due to moderate focal length of my telescope (660 mm) I managed to capture two Messier’s object in one shot. Specifically it was Omega nebula M17 (on the right) and open cluster M18 (on the left). I already captured Omega nebula some time ago, but due to its very low declination, the picture was not that nice. I was really happy that I got the opportunity on island Milos to capture it again. The cluster M18 is approximately 4200 light-years away from Earth and it has diameter 17 light-years.
Technical details:
Telescope | Newton 150/600 mm |
Aperture | 150 mm |
Focal length | 660 mm |
Mount | iOptron CEM25P |
Autoguiding | QHYCCD miniGuideScope 130 mm f/4.3, ZWO 174 MM |
Camera | ZWO 071 Pro @-10C |
Corrector | Explore Scientific HR coma corrector |
Filters | Astronomik L-1 - UV IR Block Filter |
Exposure | 37x180s, Gain 134, bin 1x1, |
Date | 2018-09-06 |
[…] all Messier’s summer objects in southern skies. Specifically, I captured M4, M6, M7, M8, M9, M17, M18, M19, M22, M23, M24, M25, M28, M30, M31, M33, M45, M55, M56, M62, M69, M70, M73, M75, M80 and M107. […]
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