Re: [APML]: reducer lens for GEG

["Philip Perkins" <philip@astrocruise.com>]

The Astro-Photography Mailing List
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> OK... I visited your page, and now I am confused!  I think I have the same
> GEG as you do, but according to my instructions, the lense can be placed in
> two positions that I know of.  According to the information provided, that
> gives me f/6.5 for in front of the pick-off mirror, and f/5 for behind the
> mirror.  Am I missing something?  I've only been using it for a couple
> months, and I am learning new things all the time!  I would like to know
> how yours is configured for the focal ratios you mentioned on your page.

Hello Dan

You may have already seen my GEG report owing to Bobby's kind reference.  I
should add that I wrote the GEG report specifically to address the sort of
queries you raise. If you have not seen it please find it at: 
http://www.astrocruise.com/geg.htm

It is quite a lot of reading, because it tries to address just about every 
facet of the GEG.  However if you have 10 minutes to spare I think you will 
find it worthwhile.  In view of your queries I would draw your attention 
specifically to the Mode Report section.  Also please look at the Options 
section where I think you will find more useful info.

Regards
--Philip

Philip Perkins  --  philip@astrocruise.com
51 27'N 1 36'W  --  Wiltshire, UK
43 54'N 5 32'E  --  Luberon, France
Astrocruise     --  http://www.astrocruise.com