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  ·  NGC 1999  ·  The star 42Ori  ·  The star 45Ori  ·  The star θ1Ori  ·  The star θ2Ori  ·  The star ιOri  ·  The star υOri
M42 revisited, Gary
M42 revisited
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M42 revisited

M42 revisited, Gary
M42 revisited
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M42 revisited

Equipment

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Acquisition details

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Description

I asked for and got some good coaching regarding my previous post with this data. My heavy handed noise reduction had reduced the details considerably. This was my second deep sky target - I've only done Milky Way and star trail shots until recently - and it's my second session capturing the Orion Nebula. The data from my first session was unusable due to soft focus and sketchy polar alignment.

This was taken with a Canon 7D with a Tamron 2.8 70-200 G2 lens at 200mm on an iOptron SkyGuider Pro mount. 42 58 second exposures at F4.0 and ISO 1600 plus flats/darks/bias. I blended a second set taken at ISO200 to recover the blown out core in the ISO1600 set.

Though I've been shooting the Milky Way for some time, I'm very new to DSO work and encourage your comments and critiques.

Comments

Sky plot

Sky plot

Histogram

M42 revisited, Gary