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Doubling barlows
Has anyone tried this?
I have just got a new Zenithstar66 for travelling/ leaving in the car etc and am looking to go minimalist. The eyepiece(s) will stay with the telescope as it is for those unplanned times when you look up and wish you had a telescope handy.
With the 25mm plossl, I'd get 15.5x, 31x, 46.5x and 93x by combining 2x and 3x barlows. With a 32mm plossl it would be 12x, 24x, 36x and 72x. These numbers are rough.
I have read some bad things about doubling barlows, but they seem to be more a result of cheap barlows. What I am wondering is, if I stick to televue gear, would image distortion, eye relief etc really be an issue?
Also, while I am asking questions, has anyone got any thoughts on the Astronomik UHC-E for a Megrez 90?
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