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Contains:  NGC 7320, NGC 7319, NGC 7318, Stephan's Quintet, NGC 7317
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Stephan Quintet, 





    
        

            Daniel.P
Stephan Quintet

Stephan Quintet

Technical card

Resolution: 2926x1810

Dates:Aug. 11, 2015

Frames: 39x900" bin 1x1

Integration: 9.8 hours

Flats: ~5

Bias: ~20

Avg. Moon age: 26.59 days

Avg. Moon phase: 9.49%

Mean SQM: 21.10

Mean FWHM: 2.20

Temperature: 20.00

Astrometry.net job: 916782

RA center: 339.016 degrees

DEC center: 33.948 degrees

Pixel scale: 0.758 arcsec/pixel

Orientation: -176.138 degrees

Field radius: 0.362 degrees

Locations: Duc, Prayssas, Lot et Garonne, France

Description

Image acquired during two nights :
11 july 2105 : 19 x 900 s
11 august 201 : 20 x 900 s
FWHM : measured in Pixinsight : 2.2 arcsec (before deconvolution)
Limiting magnitude : 22.5 (with SNR=5)
Pre-processing done in Pixinsight :
- overscan area offset correction
- bias correction
- flat correction
- hot pixel correction
- debayer
- registration
- stack
Processing done in Pixinsight :
- backgroung color neutralisation
- color calibration using galaxy
- residual sky background substraction
- color saturation boost
- green neutral
- TGV denoise
- slight deconvolution
- non linear image creation
Final image :
- jpeg calibration done in Mac Photo

Comments

Author

Daniel.P
Daniel.P
License: None (All rights reserved)
1311
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Stephan Quintet, 





    
        

            Daniel.P