Pentax-PF-65ED 65mm spotting scope

nick · Joined: 07 Aug 2007 Posts: 33

i've just brought a bushnell 80mm ED scope which i'm very happy with,now my father would like a scope i was looking at the Pentax how does this compare to the bushnell

Jne_K · Site Admin Joined: 24 Sep 2003 Posts: 5517

HI

The Bushnell has a better zoom eyepiece. The 65ED is a great scope, but you need to use it with fixed power eyepieces to get the most from it.
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nick · Joined: 07 Aug 2007 Posts: 33

Thanks for your reply

nick · Joined: 07 Aug 2007 Posts: 33

Could please you tell me which Pentax eyepiece would give me 30x magnification

Jne_K · Site Admin Joined: 24 Sep 2003 Posts: 5517

Hi

You will need a telescope eypiece listed at 13mm to get 30x. Divide focal length of the scope (in this case 390mm) by the focal length of the eyepiece to get magnification. This is standard procedure for calculating magnification in a telescope.

If you can afford it, the Pentax XW 10mm (for 39x) is superb. If not, you can still use the XF12 (for 32.5x) for some repectable performance.
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nick · Joined: 07 Aug 2007 Posts: 33

Thanks for all your help

Jne_K · Site Admin Joined: 24 Sep 2003 Posts: 5517

You are very welcome, of course.
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