69x 120″ or over 2 hours on ISO400 Nikon D750 No LPS 50mm F4
Because of trees at the start and the end of the capture, the image was cropped.
Orion Widefield
An interesting comet picture
This picture has comet ATLAS C/2020 M ATLAS pictured all the way to the edge of this frame. When imaging, I did notice that the comet was not visible around the image center, and I just assumed it to be too dim for it to show up. I did not inspect the whole frame. Not sure why that happened: were the coordinates in CdC not accurate, or was the telescope not accurately pointed? The telescope was aligned using PlateSolve2. The delta is about 0,8 degree which would be a VERY large pointing error.
Only when processing 8 frames taken with the Esprit120 and the ASI2600MC of 120″ each (Gain 0) the comet – with it’s typial greenish color – revealed itself.
SIMBAD was showing no other object on that location. Also Astrometry provided a precise RA and Declination for the image center. In the image center there is a dim reddish nebula clearly visible. That turns out to be IC2120, a 14th magnitude nebula of which “SkySafari” says it is a nonexistent Deep Sky Object. What would you say? 🙂 Further exploration indicates that it’s not classified as a planetary nebula or a small hydrogen region.
