Imaging comet C/2017 K2 (PanSTARRS) and deep sky objects with an ASKAR FRA500/Sigma fp combination

Comet C2017 K2 (PanSTARRS), which cannot be spotted with the naked eye, turned out to be a perfect test object for my new ASKAR FRA 500, f/5.6 astrograph. I combined the ASKAR with a compact full-frame SIGMA fp digital camera and stacked multiple short exposures (using Siril). Despite the lack of a precise tracking mount and suburban conditions I succeeded in generating decent images of the comet and deep sky Messier objects like M35, M97, M106 and NGC 7000.
Related links...
Astrograph manufacturer:
www.askarlens....
Blog on night imaging with the Sigma fp:
blog.sigmaphot...
Nice collection of deep sky objects:
astropixels.com
Software used for stacking images:
siril.org
Newcomers to astrophotography might appreciate my previous reports on imaging the night sky with a digital camera without tracking:
• Urban Astrophotography...
... and imaging details of the moon and sun using a compact (fixer upper) beginners telescope:
• Combining the LEICA CL...