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Message: <blockquote data-quote="DRodrigues" data-source="post: 1241181" data-attributes="member: 55152">Siebert Power Mag WheelIn my "fight" for cr-birding binoviewing I tested another step: - finally I received the Siebert PMW. I'm a bit frustrated for not receiving the total material I ordered  - instead of the Power Mag Wheel for SCT/Mak Minus 0.6x - 1x - 1.5x - 2x - 2.5x with the extra 3x and 4x cells, I just received the Power Mag Wheel for refractors  1.0x - 1.6x - 2x - 2.5x - 3.0x |=(| - even if they want to correct the shipment I will not have a person coming from USA soon...Concerning the PMW, after a first false disappointment (first I putted the PMW between the C5 and the image erector), I was convinced about the validity of the solution - using 30 and 42mm Celestron ultima eyepieces, they remained sharp in all magnifications, which made me :C for not receiving all material... If the 3x worked well in a cloudy day as today (yes, sometimes we have it...), the 4x would work in a normal day... With the PMW after the image erector, and before the eyepiece, the focal length of the telescope seem to increase well more than 25%, which increase even more the interest of the 0.6x cell. I hope to have time to test more the PMW during the next weeks, doing a resolution test (it increased the resolution reading a distant duck saddle code, comparing with the Optolyth 100 at 90x), hope to test a couple of focal length reducers and eventually a 2" eyepiece - I'm guessing that a 35mm or lower wide angle would be a good solution, with a huge field of view. By the way, didn't get the 4 or 5x zoom but at least I got a 3x zoom with a constant apparent field of view - fanatics of wide-angles, this is a solution for you!!! Another not so good detail - it doesn't work in the Pentax PF100 neither on the Optolyth 100 - it doesn't reach focus in all magnifications, with all eyepieces...Bino-viewing in cr-birding is closer but the binoviewer purchasing will take longer since it's a "bit" expensive - I will need one that will not vignette with 32 or 42mm eyepieces - these have the same field-stop of the 24mm wideangled eyepieces, but increase less - a need with mirror telescopes.Will comeback, when possible...David</blockquote>

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