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Contains:  M 3, NGC 5272
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Messier 3, 





    
        

            Daniel.P
Messier 3

Messier 3

Technical card

Imaging telescope or lens:CELESTRON EdgeHD 8

Imaging camera:QHYCCD QHY8L

Mount:Sky-Watcher NEQ-6 PRO GoTo SkyScan

Guiding telescope or lens:Skywatcher ED 80/600

Focal reducer:Celestron .7x

Software:EZCapPixInsight PHD Guiding 2.5.0

Accessory:Orion Starshoot Auto-Guider

Resolution: 3040x2024

Dates:April 8, 2014

Frames: 9x60" -15C bin 1x1

Integration: 0.1 hours

Flats: ~11

Bias: ~20

Avg. Moon age: 8.40 days

Avg. Moon phase: 60.73%

Mean FWHM: 2.40

Astrometry.net job: 1125348

RA center: 205.553 degrees

DEC center: 28.416 degrees

Pixel scale: 1.082 arcsec/pixel

Orientation: -93.920 degrees

Field radius: 0.549 degrees

Locations: Duc, Prayssas, Lot et Garonne, France

Description

Only 9 x 1 min run. I was not able to stack another set of 5sec exposures in PI without introducing al lot of noise. Anyway there is no saturated stars, which was the reason for short exposures.

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 cluster
- residual sky background substraction
- color saturation boost
- green neutral
- non linear image creation
Final image :
- jpeg calibration done in Mac Photo (dark pt adjust, denoise)

Comments

Author

Daniel.P
Daniel.P
License: None (All rights reserved)
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Messier 3, 





    
        

            Daniel.P