First Experiment with LRGB: M42 & Running Man (Steve Lantz)

Celestial hemisphere: Southern · Constellation: Orion (Ori) · Contains: 41 the01 Ori · 42 c Ori · 43 the02 Ori · 44 iot Ori · 45 Ori · De Mairan's nebula · Great Nebula in Orion · Hatysa · M 42 · M 43 · NGC 1973 · NGC 1975 · NGC 1976 · NGC 1977 · NGC 1980 · NGC 1982 · Sh2-279 · Sh2-281 · The star 42Ori · The star 45Ori · The star θ1Ori · The star θ2Ori · The star ιOri

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First Experiment with LRGB: M42 & Running Man

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First Experiment with LRGB: M42 & Running Man

I finally got my LRGB setup ready to go and decided to start with an easy and really bright object, M42. First discovery: My ZWO filter wheel in combination with my William Optics focal reducer/field flattener in my William Optics 103-mm refractor produced a most distant focus of about 50 feet -- there was not enough in-travel of the focuser to reach an infinity focus, even with a camera with a front-mounted sensor. So, I had to ditch the filter wheel, pull out the camera for each image, screw on a different filter, refocus and do my best (with sharpie markings) to keep the camera alignment the same (which was not the most accurate alignment method, and this really complicated the image processing). All of this messing around unfortunately cut into my light collecting time! I will simply have to ditch the focal reducer next time. In any event, after learning a lot about LRGB image processing, I managed to generate a decent image, which I decided to post. You may note the tracks though the right side of the field -- these are the objects in one of my G image sets that I described in a previous post. I left these in as a reminder that if Elon Musk has his way, the current fleet of 1584 Starlink satellites will eventually be expanded to 12,000 -- if this happens, we'll have to deal with many such streaks in our images!

Tech data:

10 x 10s L subs (bin 1)

20 x 30s L subs (bin 1)

10 x 15 s R, G and B subs (bin 2)

10 x 5 s R, G and B subs (bin 2)

= 1300 total subs, 0.36 hr total integration

ambient temp = 0 deg C

gain = 300

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Unknown

The “AstroBin Image of the Day and Top Picks”, or IOTD/TP, is a long-running system to promote beautiful, interesting, peculiar, or otherwise amazing astrophotographs, with a focus on technical excellence. Learn more.

Submitted The date and time when you submitted this image for IOTD/TP consideration.	...
Views by Submitters (available since September 19th, 2023) Every image is assigned to 50% of available Submitters. In the event that at least 80% of them don't view the image before its time in the IOTD/TP process expires, it's assigned to the other 50% of Submitters and the process begins anew.
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Early dismissal Staff members have a lot of images to inspect on a daily basis, and they can dismiss images if they believe they don't meet the requirements for IOTD/TP selection. If an image is dismissed 5 times, it's removed from the process. This streamlines the process and ensures that any bias present in promotions could be overruled by other staff members.

Status	Advanced success
Started	...
Astrometry.net job	3187032
PixInsight job	M1OQW6DPM1IBDONMCZDVLW4KJRL0J5QJ
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	05h35m19s.35
RA (top/left)	05h31m33s.65
RA (top/right)	05h34m58s.39
RA (bottom/right)	05h39m05s.53
RA (bottom/left)	05h35m40s.70

Dec (center)	-05°27′58″.5
Dec (top/left)	-04°58′46″.8
Dec (top/right)	-06°31′07″.0
Dec (bottom/right)	-05°57′08″.1
Dec (bottom/left)	-04°24′51″.9

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First Experiment with LRGB: M42 & Running Man

First Experiment with LRGB: M42 & Running Man

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Image Index:

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First Experiment with LRGB: M42 & Running Man

First Experiment with LRGB: M42 & Running Man

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