Some time ago I read an article about how the mirrors of large observatories are cleaned professionally. There was also talk about a method of applying polymer films to the optical surfaces and then peeling them off. This is also possible for amateurs!
Read more: Cleaning optics with Discofilm
If you want to set up the mount in your observatory in a perfect and stable way, you will very likely reach for the steel column from Baader-Planetrium. This has a practical storage table, also made of hard metal - if you ever have bumped your head against it, you know what I mean.
Read more: Edge protection for the table on a Baader pier
Usually I am not in the observatory when I take pictures. All the more I noticed on the weekend how much dirt has accumulated in the observatory and on the dome over the winter. So give me the cleaning bucket!
Read more: Cleaning the observatory
For the CCD Workshop 2019 in Stuttgart, I was happy to give several talks.
Read more: CCD Workshop 2019 presentations