Nebulae

SADR Region of Cygnus

Pinterest LinkedIn Tumblr

SADR is the central star of the Cross of Cygnus, between the arms of the cross.   The constellation of Cygnus is supposed to represent a swan but to most people looks much more like a cross and consequently is often called The Northern Cross.  The whole area abounds in nebulosity that is very easy to capture with a camera.

This image is taken with a  Samyang 135mm DSLR lens and subtends a field of view of about 8 x 6 degrees across the sky and so the long axis of this image is about sixteen moon widths wide.  This is a very large area of sky to capture in one image.  It is was made from 12 x 3 minutes exposures in each of the Red, Green and Blue and also a luminance of 24 x 3 minute Hydrogen Alpha 3nm exposures to give a total integration (exposure) time of about three hours.  The camera I used is the Moravian Instruments G2-8300 loaded with 31mm Astrodon LRGBHa3nm filters.

I captured it in my back yard on 26th April 2019 with my wide-area autofocus rig mounted atop a NEQ6 mount.  The data was captured with SGP and processed with PixInsight and Photoshop.

I hope you like it! 🙂  

Comments are closed.