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Old 08-04-2010, 07:07 PM
Wavytone
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Join Date: Jul 2008
Location: Killara, Sydney
Posts: 4,147
Actually you should consider using what Questar chose to mate with what is arguably the finest planetary telescope - Brandon eyepieces, from Vernonscope. You can buy these without buying a Questar.

The Vixen LV's in the range 4-25 mm have a 45 degree field of view.

HOWEVER, FoV is not really the issue here - for a fine planetary eyepiece - as Suzy correctly indicated - the priorities are CONTRAST and lack of COLOUR, and to that I'll add SHARPNESS on-axis. A huge field of field of view is not a high priority.

Secondly the attributes that make a fine planetary eyepiece effectively eliminate everything from Televue - Plossls, Naglers, Ethoi and Radians included.

The point is to have as few elements as possible, as few glass-air surfaces as possible, and preferably MgF coatings.

Brandons have just 4 air-glass surfaces, and have MgF coatings, and this is one of the reasons why Questar use them - over all others.

Likewise the TMB SMC's have just 2 air-glass surfaces, and MgF coatings, for half the price of the Brandons, and a better range to match Suzy's scope (the shortest Brandon is 8mm).
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