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Recommend astrometric eyepiece?

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#1 lsfinn

lsfinn

    Mariner 2

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Posted 19 July 2019 - 05:40 PM

Hi - I'd appreciate hearing from anyone who has and uses an astrometric eyepiece with an illuminated astrometric reticle: i.e., a reticle with engravings that I can use to measure position angles and separations of binaries, and for precision alignment of my scope. What do you have, and how do you find it?

I'm looking for a good such eyepiece. What do I mean by "good"?
* The illuminator should not be so bright that it destroys dark adaptation or otherwise makes it impossible to see the binary, PN, gc, galaxy, etc., that I'm trying to measure;
* The eyepiece optical quality should be good: i.e., no obvious kidney-beaning, pincushion, or other optical distortions across the fov.
* Eye relief should be reasonable and comfortable -I shouldn't have to press my eyeball against the glass.

Any and all advice or recommendations welcome. I have tried a Meade MA 12mm but, as detailed in a separate thread in the eyepiece forum, that eyepiece failed on all accounts.



#2 Bill Geertsen

Bill Geertsen

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Posted 23 July 2019 - 08:20 PM

ISFINN/Vostok 1

 

Look for the following:

 

Celestron Micro guide eyepiece : out of production but available used

Baader Planetarium Micro guide eyepiece : available new from Highpoint Scientific

 

I have the Celestron MG, have used but cannot recommend the much cheaper Meade micro guide eyepiece.

 

BG




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