I expected they'd moved into faster f/ratios (f/3 and like) for those monsters. I hate those tall scopes. Not that I'm afraid of height, but they are so hard to move from top of the ladder, especially closer to zenith. I'd much rather stick with 30" f/3 than go 40" if it had to be f/4.
50" f/4 - forget it. That is going to be unusable.
Just saw Orion site - 50" is planned to be f/3.75. Still almost 5m tall. Still unusable in my book (perhaps unless actively driven. Even then, not many people will climb 4+ m ladder for a peek)
|