Denk 21 (and 14) in MarkV?
Posted 22 August 2013 - 02:01 PM
Posted 22 August 2013 - 05:04 PM
The Mark V can support a 28mm field stop (24mm Hyperion and 35mm Ultima both have 28mm field stops). The D21s only have a 24.7mm field stop. Now this is perfect for the Binotron because it is perfectly matched to the smaller prisms and especially to the low power arm of the powerswitch in that system (bigger field stop eyepecies will slightly vignette with the low power arm in).
Any 1.25" eyepiece will work, but in A la carte mode (bino without powerswitch) the Mark V can give a wider well illuminated field with the 24mm or 35m than the Denk can.
It will work though. Any 1.25" eyepiece will work in the Mark V and it will work as well as it works anywhere else.
If you just want a pair of 21mm eyepieces (21.6mm is about what the focal length really is) then I think the Denks will be quite excellent in the Mark V.
Posted 22 August 2013 - 06:53 PM