Statistics
With the data from the database I can do some calculation of it and compare the outfall for different months.
It's the months of December to Mars that's best in Sweden where I live. April to August the night sky is too bright.
At October to Mars it's dark, October to November it has been a lot of clouds some years.
I started doing astrophotographs with very simple equipment 1982, but no success.
I bought the Sky-Watcher EQ6 mount 2013, from that it was more fun and I started to take much more astrophotos.
Each photo have about 10 to 120 minutes of total exposure.
The big problem is the light pollution, where I live it's Bortle Class 9.
2021 I bought the HEQ5 mount which has lower weight and is much more compact.
Together with the Pentax 645 300 mm f/4 ED lens and Nikon D800 full frame camera I can now take it in my car and drive to dark places, Bortle Class 4 in my case.
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