2021-12-03: C/2021 A1 Leonard with NGC5272 M3

C/2021 A1 Leonard Passing Near NGC5272 M3

This image was taken with a Stellarvue SV80ST apochromatic refractor having a SFFR 0.8x reducer resulting in a 80 mm aperture, 384 mm focal length system. The camera was a Nikon D5600. The system was mounted on a Celestron Advanced VX mount. No autoguiding. The camera was controlled by BackyardNIKON. The image is a composite from 108 frames, 60 seconds each at ISO-1600 for a total exposure of 1 hour 48 minutes. Calibration was with 16 dark, 16 bias and 16 flat frames. Processing was in PixInsight 1.8 and PhotoShop version 22.


The image was taken from Buford Mountain Conservation Area on December 3, 2021 at 11:00 UTC.