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Powermate vs TV Barlow ?

Started by Midnight Sun, 08/06/2008 04:41PM
Posted 08/06/2008 04:41PM | Edited 08/07/2008 05:02PM Opening Post
Besides the additional $90 for a Powermate, I was wondering if the visual enhancement is worth the added expense.. thank you, John Meiners

Posted 08/07/2008 03:08AM #1
AP Barcon

"Scope will get you through times of no money better than money will get you through times of no scope." --Freewheelin' Franklin
Posted 08/07/2008 06:24PM #2
Check out this explanation direct from Televue...

http://www.televue.com/engine/page.asp?ID=42

I have the 2" 2x Powermate and love it - can't even tell it's there - execpt for the increased magnification... grin

Jim 8)
www.laas.org
Posted 08/07/2008 08:05PM #3
John Meiners said:

Besides the additional $90 for a Powermate, I was wondering if the visual enhancement is worth the added expense.. thank you, John Meiners


I think it really depends on the application. I have owned several of each. In my tests in an indoor artificial star/collimated beam setup as well as outside in the field, the Barlow is sharper on axis then the equivalent PowerMate. Subtle but noticeable.

The big selling point for the PowerMate is a non vignetting field. They're very popular with the webcam planetary imagers. But for visual, I think your better off with a plain ol' Barlow. At least this is what I've seen repeatedly in my tests.

My current favorite is a TeleVue 3X Barlow. But the AP BarCon is really nice too.