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Old 26-02-2006, 02:47 PM
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Robert_T
aiming for 2nd Halley's

Robert_T is offline
 
Join Date: Oct 2005
Location: Australia
Posts: 2,959
Hi Ziggy, one you've missed in the 50mm 2 inch barrelled Takahashi LE eyepiece. This has a slightly larger FOV to a typical plossl. I have only used the shorter focal length LE's on the SCT, but am very impressed with them. Tak do recommend the 50mm for use in their Mewlon series of Dall Kirkham cassegrains so good for long focal length. Price is ~$600AU last time I looked.

Quote:
Originally Posted by Ziggy
Hi Guys,

I'm obssessed with eyepieces, and have a couple of questions regarding 2" wide field eyepieces. Does anyone know what the maximum FOV for a 9.25" SCT is before the field starts to vignette. I couldn't find what I was looking for, but I'm sure there was a discussion on here a while back. I have a 2" diagonal obviously.

I'm looking for a wide field eyepiece, without going over board on price.
Here are a couple of options, with the approx mag & fov

Televue plossl 55mm 43x mag and 1.17 degree fov
41mm Pan 57x mag 1.19 fov (very expensive)
35 Pan 67x 1.01 fov
Vixen LVW 42mm 56x 1.29 fov
Meade SWA 40mm 59x 1.16 fov
Meade UWA 30mm 78x 1.05 fov
UO Konig MK 70/80 40mm 59x 1.19 fov

A few options there, and most of those are fairly similar. Any opinions on how any of these perform? Maybe there's something I've missed? I'm looking for the widest field of view possible, without the view becoming unusable I suppose. A kind of finder eye piece.

The Vixen has the widest FOV, but will it be wasted in my scope? The Pan 35mm is probably the safest bet, but how does the 41mm perform. I've read a few reviews of course, so just looking for some more opinions. The plossl is tempting cause of price obviously, even allowing for it's 50 degree fov.

Thanks for any help!
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