Quote:
Originally Posted by RobF
I guess I'm biased, but......
- It sounds like you need a scope design that many of the top planetary imagers here use (albeit BIG ones)
- A scope that can be easily modified to give a relatively flat coma free field (with corrector)
- A scope with big enough aperture to allow observing and imaging of DSOs without oversized central obstruction
- A scope that isn't too heavy for a HEQ5Pro
- A scope that's great value for money
I'm just saying why leave out the humble 8" Newt from the equation? I don't have any experience with 10" ers - probably going to need EQ6 with an additional ED80 hanging off the side.
|
They are big, ungainly, need a ladder to get to the focuser when on an EQ mount (OK my legs are too short on one side
) and the very thing you have listed as an advantage (small central obstruction) limits the size of chip that can be fully illuminated. Thats why RC's have such a large central obstruction. Its all about getting a large flat well illuminated imaging field at the cost of contrast. Also with all that tube sticking out at both ends you will test the resolve of any mount when it comes to damping vibration. I know people do it and very well I might add but there must be an easier way.
Mark