A classic place to start your imaging David. I’m still not clear in (times) amount of light and focal ratio’s . But short F ratios seem to reduce exposure times. There must be some good physics behind it ! I’m probably a little lazy in the research side of this topic .
Welcome Dave
Nice work.
Great way to start. Processing can be fun..go negative with various colours is fun.
Keep them coming we all like seeing this stuff.
Alex