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Old 23-08-2013, 11:07 AM
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OzEclipse (Joe Cali)
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Join Date: Jun 2012
Location: '34 South' Young Hilltops LGA, Australia
Posts: 1,482
Binoculars will be a pain to look through mounted on the scope.

If you only want a low power wide field scope, an achro short refractor is perfectly adequate. The 80mm f5 Shorty's give wonderful wide field views.

They only have a 1.25" eyepiece. The field probably isn't flat enough to properly use the field of a 2" eyepiece so I wouldn't look at changing to a 2" focusser. You don't need long FL eyepieces for wide fields.

I use my 80mmf5 with a 16mm UO Konig (65 degree) eyepiece I get 25x magnification and a 2.6 degree field of view and a 3mm exit pupil. The refractor only weighs about 1kg and a 1.25 diagonal and 1.25 eyepiece is a fraction of the weight of a 2" combo. For any such combo, you definitely don't want the eyepiece focal length to exceed (7 x f-ratio) or (6 x f-ratio) if you are older. than teens or 20's.

The GSO superview 20mm 68 deg eyepiece ($39) in an 80mm f5 shorty scope ($220) will yield : -

20x mag
4mm exit pupil
3.4 degree field of view

all in a lightweight package.

Cheers
Joe
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