Hi Adam,
Thanks for te elaborate answer, I really appreciate it! I have been hinging on two thoughts: get a decent EQ mount first and work with the camera and lenses I have right now, or try to get as much out of the MSM tracker with maybe a lighter lens, like the AFM, improve my skills and then go for the EQ mount. I bought the MSM just to see if I could get something out of my current gear, and I was quite surprised what is already possible, and that made me hungry to go further. Last time I tried this was roll film on a Russian camera back in the eighties… Any thoughts on this (not on the roll film camera)?
I can get decent 60 sec subs with the 100mm, which is less than 700 grams.
The 70-200 with tripod collar comes in at some 1600 grams, and I can see and hear the MSM struggling with it. I got a half decent shot of Orion a week ago on a damp night with the big Canon but could not go beyond 10 second subs.
That is why I thought by reducing the weight significantly I could continue to use the MSM for a while but get a longer focal length. Polar alignment is still an issue then with the longer focal length (as opposed to the 100mm Zeiss).
Bahtinov mask, lens warmer and power source(s) are all there, I just have to exercise some more discipline to use the warmer.