As we all know, this weekend there will be a super moon total lunar eclipse, which won't occur again for another 33 years. Therefore, I'd like to get this right. My thought is to shoot this in two ways:
1. With a D810 and a 300 (with and without a TC20) to get as much detail as possible
2. With a D800 and a 24-70 to get a sequence of moon shots as it goes through the eclipse sequence. I then hope to combine these images using something like StarTrax. My question is that over a 3 hour period what focal length would you recommend using in order to keep the moon in the frame for a full three hours while still getting enough detail.