Dear Barbara, I was very happy to seen you again at RTMC. We have two package selection for ZS 66 patzvel:(not triplet APO) Terrestrial Package Package...
My Megrez 80 II SD arrived yesterday. What a great piece of workmanship this product is! The materials, machining, fit and finish are all top notch....
Hi Michael, I mounted my Megrez 80ED on a TeleVue "swing-up" (identical to the TelePod head) and a Bogen tripod AND Orion's 90mm rings. I ran into the same...
Hi All, I have some questions regarding the Zenithstar 66's, both the Petzval and ED versions. The questions are primarily directed at W.O. , but I thought...
Two nights ago I was out at our observatory under mag. 6.4 sky and had the opportunity to closely compare the Megrez II 80 ED with a Takahashi Sky 90. The...
I'm not sure the eye could detect the brightness difference due to a 12.5% percent increase in aperture. If I did the math right, that is 1/3 of a f stop....
Hello, I recently obtained a William Optics 0.8x reducer/flattener APO for use with my Megrez 80 triplet APO f/6 480mm. I tried to image through them last...
That's just 12.5% by diameter, the light collecting of 10mm more diameter would be much greater then 12.5%, I think the formula is to take the squares of the...
... The light gathering capability is a function of the area of the objective. A 90mm objective has 27% more area than an 80mm. Should be noticable. Clear...
(90/80)^2=1.265625. One stop is a factor of 2. But 1.265625 is .34 of a stop. I think it would be hard to notice, but not impossible. Is there some equivalent...
Hello everyone I have recently acquired a Megrez 80ED and top notch diagonal and am just getting to grips with them. I currently have a rather motley ...
Hi As is stated in the WO site, you should have a distance between the last glass of the focal reducer and the chip os the CCD as close as possible to 44mm. If...
As it happens, I was out last night looking at Jupiter, M13, and M57 with 3 eyepieces on my WO 80mm/480mm Fluorite. Since these scopes are "short", they...
... In my opinion Kurt, a conclusive ;-) conclusion cannot be drawn between different eyepiece designs unless you use the same focal length across the board....
Hi J D Yes I've got a 2" diagonal - its a Williams Optical 2" Dielectric. I'm working on the principle of getting a limited quantity of good quality gear. I...
Hello Kurt Thank you for your comments and observations. I had heard that Panoptics were good for wide angle viewing. Your coments on planetary viewing are...
Vixen LVW can always be purchased used on Astromart for about $150. I like them because they are somewhat wide angle, but not enough to have obvious...
I agree with the spirit of what you are saying, but with the Radian at 3 and 6, and the AP at 5, I feel pretty confident that if I had a 5mm TV radian, I would...
... Hi David, I don't know what you're willing to pay for a wide angle ep, if you look at the Naglers over 20mm, you're talking $400-$600. Personally, my...
One other eyepiece recomendation for your consideration. The new Pentax XF series. Here is a clip from their advertising. Think of all the heavily advertised...
While waiting for my Megrez 80 ED I am thinking of a 5 mm EP for planetary viewing. After reading quite a few reviews, Baader Planetarium Eudiascopic seem very...
Hi Joan, I use the Vixen Lanthanium 4mm for planetary observing. I never thought I'd be using such a short focal length in an eyepiece, but the 4mm has a great...
Hi Hal, well, actually I already have -for those wide views- a 25mm SWAN and a 9mm SWAN for medium power. Actually the 5mm I am looking for will be devoted to...
I thought Orion sold a version of Vixen LV or LVW. The best bang for the buck would be UO orthos, maybe 45 deg FOV. I got one of the special coated HD UO...
The Takahashi 5mm LE is the best planetary eyepiece out there. Cost is $177 at Anacortes. Jeff Kurtz ... reasonable ... am ... delivers ... EP ... here...
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