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 Orion Nebula  ·  Hatysa  ·  IC 420  ·  LBN 963  ·  LBN 974  ·  LBN 977  ·  LDN 1640  ·  Lower Sword  ·  M 42  ·  M 43  ·  Mairan's Nebula  ·  NGC 1973  ·  NGC 1975  ·  NGC 1976  ·  NGC 1977  ·  NGC 1980  ·  NGC 1981  ·  NGC 1982  ·  Orion Nebula  ·  Sh2-279  ·  Sh2-281  ·  The star 42Ori  ·  The star 45Ori  ·  The star θ1Ori  ·  And 5 more.
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M42 and M43 - Orion Nebula and Running Man, 



    
        

            Mike Jaworski
Powered byPixInsight

M42 and M43 - Orion Nebula and Running Man

Revision title: High-Dynamic Range composite image

Getting plate-solving status, please wait...
M42 and M43 - Orion Nebula and Running Man, 



    
        

            Mike Jaworski
Powered byPixInsight

M42 and M43 - Orion Nebula and Running Man

Revision title: High-Dynamic Range composite image

Imaging Telescopes Or Lenses
Celestron AstroMaster 114EQ (modified)
Imaging Cameras
ZWO ASI 1600MM-Pro (Mono) ASI 1600MM-Pro (Mono)
Mounts
Skywatcher EQ5 GoTo
Filters
Orion SkyGlow Astrophotography Filter · ZWO Optical ZWO Blue · ZWO Green · ZWO Red
Accessories
Astroberry on Raspberry PI 4
Software
Startools 1.7 · Linux EKOS/Kstars · DSS · GIMP
Guiding Telescopes Or Lenses
Home made 50mm f/5 PVC refractor
Guiding Cameras
ZWO ASI120MM

Acquisition details

Dates:
Dec. 3, 2021 ·  Dec. 4, 2021
Frames:
Orion SkyGlow Astrophotography Filter: 60x240" (4h) (gain: 0.00) -10°C bin 1x1
Orion SkyGlow Astrophotography Filter: 40x30" (20') (gain: 0.00) -10°C bin 1x1
ZWO Green: 15x150" (37' 30") (gain: 0.00) -10°C bin 1x1
ZWO Green: 30x19" (9' 30") (gain: 0.00) -10°C bin 1x1
ZWO Optical ZWO Blue: 15x180" (45') (gain: 0.00) -10°C bin 1x1
ZWO Optical ZWO Blue: 30x23" (11' 30") (gain: 0.00) -10°C bin 1x1
ZWO Red: 15x240" (1h) (gain: 0.00) -10°C bin 1x1
ZWO Red: 30x30" (15') (gain: 0.00) -10°C bin 1x1
Integration:
7h 18' 30"
Darks:
15
Flats:
15
Bias:
30
Avg. Moon age:
14.39 days
Avg. Moon phase:
0.54%
Bortle Dark-Sky Scale:
5.00

RA center: 05h35m29s.74

DEC center: -05°1712.9

Pixel scale: 3.491 arcsec/pixel

Orientation: -154.161 degrees

Field radius: 1.358 degrees

WCS transformation: thin plate spline

More info:Open 

Resolution: 2248x1675

Locations: New Home, Los Alamos, NM, United States

Data source: Backyard

Description

Here is the Orion Nebula.  This is 100% new data as compared to my last attempt, which was polluted by internal reflections.  Being new data, the A-bin FAQ says it should get a new upload.  Well, here we are.

Again, I have conducted an HDR composite using a set of 30s-based subs and a set of 240s-based subs.  I found myself very curious about this process prior to making the previous image.  In this one, I am uploading the two, separate, processed images so that people can see the difference and understand the process more.  As a beginner, I would have appreciated this type of explanation and "show-and-tell" so I hope it is helpful to others.

This image has about 2x as much luminance as the last attempt.  I may return with more data later, but I'm happy with how this has come out so far.  I hope you enjoy it!

Revision A = the 30s data sets which is about 47 minutes of total data (LRGB).  This is stretched nearly the same (using the same ROI in StarTools' AutoDev tool) as the long-exposure data set so it makes an easy comparison of what's possible with much more integration time.

Revision B = the 240s data sets which amounts to about 363 minutes total (LRGB).  This image is up so one can see that the detail in the core is lost.

Revision C = the composite image using a select few stars and the core of M42.

Comments

Revisions

  • M42 and M43 - Orion Nebula and Running Man, 



    
        

            Mike Jaworski
    Original
  • M42 and M43 - Orion Nebula and Running Man, 



    
        

            Mike Jaworski
    B
  • M42 and M43 - Orion Nebula and Running Man, 



    
        

            Mike Jaworski
    C
  • Final
    M42 and M43 - Orion Nebula and Running Man, 



    
        

            Mike Jaworski
    D

B

Title: Core blow-out!

Description: This is the processed image of 4 minute subs showing a nicer overall image, but a loss of detail in the core.

Uploaded: ...

C

Title: High-Dynamic Range composite image

Description: Here is the final, composited image.

Uploaded: ...

D

Title: Revision 1: modified Super Structure post-processing

Description: A comment about the "softness" of the image suggested I go back and take a harder look at two modules in StarTools: Super Structure, and Noise Reduction. I spent some time studying Super Structure's description, playing around with presets, and generally exploring. After that, I dug a bit into the Noise Reduction materials and have recreated the image you see here. Better/Worse? What do you think?

Uploaded: ...

Sky plot

Sky plot

Histogram

M42 and M43 - Orion Nebula and Running Man, 



    
        

            Mike Jaworski

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