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Contains:  Coma Pinwheel, M 99, NGC 4254, Virgo Cluster Pinwheel
Getting plate-solving status, please wait...
M99: Experimenting gradient removal workflow, 



    
        

            Edoardo Luca Radi...
M99: Experimenting gradient removal workflow
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M99: Experimenting gradient removal workflow

Technical card


Dates:April 15, 2020

Frames:
Baader Planetarium B 2": 15x300" bin 1x1
Baader Planetarium G 2": 13x300" bin 1x1
Baader Planetarium L 2": 61x300" bin 1x1
Baader Planetarium R 2": 13x300" -25C bin 1x1

Integration: 8.5 hours

Darks: ~30

Flats: ~20

Flat darks: ~20

Bias: ~50

Avg. Moon age: 22.66 days

Avg. Moon phase: 44.59%

Bortle Dark-Sky Scale: 7.00

Mean SQM: 18.70


Basic astrometry details

Astrometry.net job: 3436142

RA center: 12h 18' 51"

DEC center: +14° 24' 25"

Pixel scale: 0.514 arcsec/pixel

Orientation: 270.374 degrees

Field radius: 0.366 degrees


Resolution: 4054x3151

Locations: Castenedolo, Castenedolo, Italy

Data source: Backyard

Description

The main goals of this experiment were two:
1) verify if RGB imaging under a light polluted sky (Average SQM 18.5) is possible or not.
2) test the new procedure of gradient removal by Vicent Peris described here

Well
1) it is clearly possible if the target is bright; harder a fainter one.

2) it is a great technique much more superior than other gradient removal routines.

Comments

Author

astroedo
Edoardo Luca Radi...
License: Attribution-NonCommercial-NoDerivs Creative Commons
1331
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Revisions

  • Final
    M99: Experimenting gradient removal workflow, 



    
        

            Edoardo Luca Radi...
    Original
  • M99: Experimenting gradient removal workflow, 



    
        

            Edoardo Luca Radi...
    B

B

Description: Plate solved and annotated by Pixinsight

Sky plot

Sky plot

Histogram

M99: Experimenting gradient removal workflow, 



    
        

            Edoardo Luca Radi...