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it would be interesting to hear the thoughts and opinions of you learned folk in regards to a shoot out between the Televue big barlow 2" x2 and the Televue 2" x2 powermate for visual observations through an F5 newtonian telescope, the pro's and the cons (if any)

in the words of Harry Hill........FIGHT!!! :)

Edited by nicnac

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"No contest" - the big barlow is disappointing at its price level, the Powermate would still be good value with the price tag doubled.

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Here's a direct quote from Al Nagler on the subject.

" You didn't say what type of scope you have. If you called Tele Vue, We would have recommended the Big Barlow if you have a Newtonian, and the powermate if you have a refractor. The reason?,

For the Nagler eyepieces the optical benefits of the powermate are invisible, however, ergonomically in a Newtonian both the BB and powermate will reach their parfocal point.

In a refractor, where a diagonal is used, the BB will not come close to reaching it's parfocal point, and an inch or so of in-travel will be required. "

John

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Thanks John, i recall reading that on the Televue web page a bit back, i was just after some more personal responses and experiences with this set up, you know how it is, everybody has their own opinions :)

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good thread/comparison. I am surprised to see Paul is a banned user.

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.... I am surprised to see Paul is a banned user.

I am equally surprised to hear that, he didn't seem the sort of bloke to get himself banned from here, I wonder what happened :):p

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I didnt notice that, tiz a shame, seemed like a decent chap.

and that thread (link above) was a good one

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ps back on thread, I have only used the 2.5x powermate and loved it but went for more eyepieces instead in the end.

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