Cookie consent

AstroBin saves small pieces of text information (cookies) on your device in order to deliver better content and for statistical purposes. You can disable the usage of cookies by changing the settings of your browser. By browsing AstroBin without changing the browser settings, you grant us permission to store that information on your device.

I agree
Contains:  NGC 7318, NGC 7319, NGC 7331, NGC 7335, NGC 7337, NGC 7343, Stephan's Quintet
Getting plate-solving status, please wait...
NGC7331 - September 2015 - Red Zone Denver, 


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

NGC7331 - September 2015 - Red Zone Denver

Technical card

Basic astrometry details 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


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.



Ken Sturrock
License: Attribution-NonCommercial Creative Commons

Sky plot

Sky plot


NGC7331 - September 2015 - Red Zone Denver, 


            Ken Sturrock