M1 - a supernova remnant in Taurus.
This image uses a stack of 20 ninety second 1x1 binned exposures using a 5" f/6 refractor for the luminance channel.
The image was calibrated, defect-corrected, stacked and
15 iterations of a Richardson-Lucy deconvolution were applied using AIP4WIN.
Each color channel is a stack of 17 sixty second images binned 2x2.
This image has been cropped from its original size of 1237x980.
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