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Markarian's Chain (LRGB), 



    
        

            Min Xie
Markarian's Chain (LRGB), 



    
        

            Min Xie

Markarian's Chain (LRGB)

Getting plate-solving status, please wait...
Markarian's Chain (LRGB), 



    
        

            Min Xie
Markarian's Chain (LRGB), 



    
        

            Min Xie

Markarian's Chain (LRGB)

Equipment

Imaging Telescopes Or Lenses
Takahashi FSQ-85EDP
Imaging Cameras
ZWO ASI1600MM Pro
Mounts
Astro-Physics Mach1GTO CP3
Filters
Astrodon E Series Gen II Lum 31mm · Astrodon E Series Gen II Red 31mm · Astrodon E Series Gen II Green 31mm · Astrodon E Series Gen II Blue 31mm
Accessories
PrimaLuceLab Sesto Senso Robotic Focusing Motor · ZWO EFW · Kingdel NC860 (i7-8550U) · Takahashi Reducer-QE 0.73x
Software
Adobe Photoshop · StarNet++ · ProDigital Software StarSpikes Pro 4 · Sequence Generator Pro · Astro Pixel Processor · PixInsight 1.8 Ripley
Guiding Telescopes Or Lenses
QHYCCD QHYOAG-M
Guiding Cameras
ZWO ASI120MM Mini

Acquisition details

Dates:
April 25, 2020
Frames:
Astrodon E Series Gen II Blue 31mm: 15x180" (45') (gain: 74.00) -20°C bin 1x1
Astrodon E Series Gen II Green 31mm: 15x180" (45') (gain: 74.00) -20°C bin 1x1
Astrodon E Series Gen II Lum 31mm: 30x180" (1h 30') (gain: 74.00) -20°C bin 1x1
Astrodon E Series Gen II Red 31mm: 15x180" (45') (gain: 74.00) -20°C bin 1x1
Integration:
3h 45'
Darks:
40
Flats:
40
Flat darks:
40
Avg. Moon age:
2.18 days
Avg. Moon phase:
5.30%
Bortle Dark-Sky Scale:
2.00
Mean SQM:
21.99
Temperature:
7.00

Basic astrometry details

Astrometry.net job: 3483589

RA center: 12h26m55s.2

DEC center: +13°0816

Pixel scale: 3.588 arcsec/pixel

Orientation: 270.307 degrees

Field radius: 1.608 degrees

Resolution: 1966x2560

Locations: SPAC Dark Site, Guthrie, Texas, United States

Data source: Traveller

Description

It's been a long time since my last effort on an LRGB target. The Markarian's Chain was a quick test (only 3.75 hours LRGB) at SPAC Dark Site.

The luminance channel lacks data and it's a big headache to process. Lots of local adjustments made in both PixInsight and Photoshop. I am happy with the final result for only 3.75 hours of imaging.

Pre-processing of LRGB Masters



– Calibration / Integration, Astro Pixel Processor

– MultiscaleLinearTransform (Denoise), PixInsight

- Range Selection, PixInsight

- PixelMath, PixInsight

– ScreenTransferFunction / HistogramTransformation, PixInsight.



RGB Combination & Final Touchups



– LRGBCombination, PixInsight

– MorphologicalTransformation, PixInsight

– ScreenTransferFunction / HistogramTransformation, PixInsight.

Comments

Revisions

  • Final
    Markarian's Chain (LRGB), 



    
        

            Min Xie
    Original
  • Markarian's Chain (LRGB), 



    
        

            Min Xie
    B

B

Description:... added some star spikes to make the image more balanced ...

Uploaded: ...

Sky plot

Sky plot

Histogram

Markarian's Chain (LRGB), 



    
        

            Min Xie