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Post date: May 09, 2021 2:37:5 PM
I imaged NGC4321 M100 on the evening of April 4, 2021 UTC from Buford Mountain Conservation Area MO. Several other galaxies are visible across the image.
NGC4321 M100 imaged on Mar 20, 21 and Apr 1, 2021 UTC through a 200 mm aperture, 730 mm focal length F/3.65 Boren-Simon PowerNewton Astrograph with 0.73x focal reducer and coma corrector. The imaging camera was a QSI683wsg-8 with Astrodon II filters and cooled to -15C, with off-axis guiding. The system was mounted on a Losmandy G11G2 equatorial head on a permanent pier. The system was controlled with Sequence Generator Pro and PHD2 and the image was processed in PixInsight.
13 Luminance frames x 10 min binned 1x1 and 7 RGB frames x 5 minutes each binned 2x2 for a total exposure of 3 hours 55 minutes. 16 flats, bias and darks frames.
This is an enlargement centered on M100:
This is the annotated image:
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