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 1981  ·  NGC 1982  ·  Sh2-279  ·  Sh2-281  ·  The star 42Ori  ·  The star 45Ori  ·  The star θ1Ori  ·  The star θ2Ori  ·  The star ιOri  ·  VdB44
Getting plate-solving status, please wait...
M42 2020, 



    
        

            Wei-Hao Wang
Powered byPixInsight

M42 2020

Getting plate-solving status, please wait...
M42 2020, 



    
        

            Wei-Hao Wang
Powered byPixInsight

M42 2020

Imaging telescopes or lenses: Takahashi TOA 150

Imaging cameras: Fujifilm GFX-50R  ·  Pentax 645z Mod

Mounts: Takahashi EM-400 Temma2

Guiding telescopes or lenses: SharpStar 50 ED

Guiding cameras: ZWO ASI290MM Mini

Focal reducers: Takahashi TOA 67 Flattener

Software: PixInsight  ·  Starnet ++  ·  RegiStar  ·  Photoshop CC


Dates:Jan. 31, 2020

Frames:
60x120" (2h) ISO800
28x20" (9' 20") ISO800

Integration: 2h 9' 20"

Avg. Moon age: 5.97 days

Avg. Moon phase: 35.23%

Bortle Dark-Sky Scale: 2.00


RA center: 05h35m03s.291

DEC center: -05°1705.93

Pixel scale: 1.494 arcsec/pixel

Orientation: 5.045 degrees

Field radius: 1.394 degrees

More info:Open 


Resolution: 4000x5400

Locations: Mt. Shiao-Shuei (Taiwan), Taichung, Taiwan

Data source: Traveller

Description

This image was taken as a test to my new camera, so the imaging strategy isn't optimized for obtaining the best quality. Half of the exposures were made with GFX-50R while the other half by 645z.

If you are interested in direct comparison of the images from the two cameras, here you go:

http://group.asiaa.sinica.edu.tw/whwang/old/misc/M42_GFX_vs_645z.jpg

The images are processed in consistent ways to my taste. 645z (modified) is clearly less noisy (reasons unknown yet), but the H-alpha sensitivity of the unmodified 50R is very impressive.

Comments

Sky plot

Sky plot

Histogram

M42 2020, 



    
        

            Wei-Hao Wang

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