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Contains:  NGC 7318, NGC 7319, NGC 7331, NGC 7335, NGC 7337, NGC 7343, Stephan's Quintet
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NGC7331 - September 2015 - Red Zone Denver, 



    
        

            Ken Sturrock
NGC7331 - September 2015 - Red Zone Denver
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NGC7331 - September 2015 - Red Zone Denver

Technical card



Basic astrometry details

Astrometry.net job: 800987

RA center: 22h 37' 5"

DEC center: +34° 25' 30"

Pixel scale: 1.307 arcsec/pixel

Orientation: -4.068 degrees

Field radius: 0.737 degrees


Resolution: 3200x2500

Description

This is my first try at processing this particular set of NGC7331 data. I was a little heavy handed with recombining my luminance data into the RGB and covered over some of the natural star color. I tried to bring the color back by boosting saturation but, by that point, the only star color left to boost was in the fringes of the stars. I tried different noise reduction combinations but eventually decided on a "light touch", so there is still a measure of graininess.

The equipment used was a Stellarvue SVQ-100 refractor, a Takahashi EM-200 Temma 2 mount and a QSI-690 camera with Astro Don filters and either an SBIG ST-i or a SX Lodestar X2 off-axis guider.

The image was made with a little over 15 hours of light spread across Red, Green, Blue, Luminance and IDAS filters from urban Denver, Colorado. All images were captured semi-automatically with a set of scripts I wrote for Software Bisque's The SkyX running on my Macintosh. If you would like to try the scripts, they are freely available on the Software Bisque forum.

Comments

Author

ken_sturrock
Ken Sturrock
License: Attribution-NonCommercial Creative Commons
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NGC7331 - September 2015 - Red Zone Denver, 



    
        

            Ken Sturrock