The fourth part of our Intro to Astro-imaging course covered long exposure deep sky imaging this evening at our online Zoom meeting, also broadcast on YouTube.

You can watch the video below or on our YouTube channel.


One of the questions concerned CR3 raw files and which apps can use them. DSS can’t but APP, SIRIL (as far as I can see), Photoshop, Lightroom, can. APT and CCDCiel can support CR3 but not NINA currently. The others I haven’t checked yet.

These are some of the applications mentioned:

The Field of View tool is on the Astronomy Tools website.

Image capture:

Image processing: