3.5 hours worth of 5-minute RAW exposures of SH2-91 in Cygnus, 'close to' Albireo, were captured with AstroDMx Capture through an Altair Starwave Ascent 60 ED refractor with an Altair Ha/OIII dualband filter and an SV605CC OSC camera.
The data were calibrated and part processed in PixInsight and further processed in GraXpert and Gimp.
Click on an image to get a closer view
SH2-91
Annotated image
Re-rendering of the SH2-91 image using the suggestions in "Dynamic narrowband combinations with PixelMath' June 9, 2020, THE COLDEST NIGHTS, for Dualband Ha/OIII data. The Pixelmath was done in Siril.
Steve Wainwright and Nicola Mackin
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