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Open Clusters NGC 6883 , NGC 6871 and Biurakan 2 – a Cygnus Wide Field View

     The open clusters NGC 6883 (left-center), NGC 6871 (right-center) and Biurakan 2 (lower-center) are centered in this wide field image with against a spectacular backdrop of Cygnus starfields, dark nebula and glowing hydrogen clouds.  The open clusters are hard to see with everything else that is going on in the field, but they are there.  This image was taken on July 14, 2018 with a Stellarvue SV70T with the dedicated 0.8x reducer.  The camera was the ZWO ASI1600MM-Cooled using the ZWO 7 position 36mm filter wheel and Baader 36mm red, green and blue filters.  55 individual subframes of 240 seconds ( 19 red, 18 green and 18 blue) were captured to create the final image.  The subframes were calibrated, aligned and stacked in PixInsight.  I used drizzle integration for the stacking.  Final tweaking in Photoshop.
     Click on the image below to see a larger version.  Also saved to Astrobin as a downsampled image at the native resolution of the camera.  If you have time check out the full resolution image on Astrobin.  There are many, many stars in there…

Posted in Processing Notes, Star Clusters

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