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Subject: Moved Message By: Anonymous (xxx.xxx.1.184) Date: 01/12/2004 01:58:58 pm PST I wanted a PowerMate to allow my inexpensive 30mm BW Optik eyepiece to operate at a high power without vignetting. Also, surprisingly to me , my newly acquired 20mm TeleVue Plossl vignetted badly when used with my barlow. Not wanting to spend the $$$, I came up with an alternative solution that some may wish to explore. I remembered reading that the PowerMate was a combination of the Panoptic Barlow interrface lens and a (Tele-Vue) barlow. I was able to find the interface lens on closeout for $40 and decided to give it a try. To get to the point - the combination of the interface lens and my 1.25" Ultima barlow makes a wonderful 4x (more like 3.8x) unit. My 2" 80degree 30mm eyepiece gives about 150X and is VERY sharp to the edge - stars are close to absolute pinpoints (10" f/5 newtonian). No vignetting either ! Last night with seeing conditions rated around 7-8 out of 10, in quiet moments between undulations of the atmosphere, Saturn appeared in wonderful detail at 150x, 240X and 400x. I could make out multiple bands on the globe and the crepe ring, Cassini's division and just a hint of the Enke division (at 400x). I love this thing ! - Herb Page 1 of 1 | ||||||||
