Celestial hemisphere:  Southern  ·  Constellation: Orion (Ori)  ·  Contains:  Great Nebula in Orion  ·  M 42  ·  M 43  ·  NGC 1973  ·  NGC 1975  ·  NGC 1976  ·  NGC 1977  ·  NGC 1980  ·  NGC 1981  ·  NGC 1982  ·  The star 42Ori  ·  The star 45Ori  ·  The star θ1Ori  ·  The star θ2Ori  ·  The star ιOri
M42 with ST80, Dan Phillips
M42 with ST80
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M42 with ST80

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Description

First night testing Skywatcher Star Adventurer mount. Looks like it's good for about 60 seconds unguided with the ST80 awkwardly attached ... I may be able to do a bit longer with a counterweight and some more mechanical care, but I guess it's about what I expected. A big upgrade in convenience from and decent upgrade in accuracy from the home-built barn door mount!

For this exposure I took 40x60" at the usual f/5 of the ST80, and then as an experiment I combined with 17 exposures manually stopped to around f/10 with the telesope cap, greatly reducing chromatic aberration as well as overexposure of the center. The result was reasonably effective and I may try something similar with my camera lenses.

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M42 with ST80, Dan Phillips