I would be extremely interested in one of these for my
recently-acquired (secondhand) 127mm ed. That price is a bit steep but
maybe he'd be willing to provide a satisfaction money-back guarantee?
I think I'll contact Markus and get further info. Thanks for the lead!

Cheers,
Paul

>
> In a message dated 12/3/98 11:37:06 AM Eastern Standard Time,
>
> << I would like to reduce the focal ratio of my Meade F/9 (5")
Refractor
> for primarily DS photo work with some visual use and was wondering if
> there are any recommendation for a Focal Reducer or Telecompressor
to do
> this. (Look for F/7 or better).
>
> Right now the only two things I have heard of are to either use the
> Meade SCT 6.3 Focal reducer with an adapter, or possibly AP has a .75
> Telecompressor that is used on their EDF and EDT line, however it
> threads into the back of their 2.7" focuser which may have different
> threads then the Meade 2.7" focuser. >>
>
> You may be in luck!
>
> I recall that quite a while ago, (former?) MAPUG member Valery
Deryuzhin of
> Aries Instruments Co. (58 Ushakova Str., kv. 39 Kherson, 325026,
Ukraine)
> designed a series of APO corrector/reducer?/flattener lenses for the
Meade 4",
> 5", 6", and 7" ED refractors. He claimed that they would improve
the color
> correction to genuine APO levels over a limited field of view the
diameter of
> which I forget, but my impression was something like 0.33 or 0.5
inch image
> diameter fully corrected to the same level as an AstroPhysics
refractor. I
> think it was also a flattener for photography over a larger diameter.
>
> I have done a couple of searches of the archives and haven't found the
> original post yet.
>
> I have no idea if anyone has taken him up on making one for them,
but if they
> have, I haven't heard about it.
>
> The prices varied by aperture, and were somewhere around $500 for
the 5". If
> you decide to take this route, I'd recommend having the German
dealer Markus
don't want to
> become an expert in Ukrainian export and customs law.
>
> Valery is almost certainly a world-class optician, and Markus
brought an 8"
> Aries fluorite APO to the last Stellafane, which was rated by some
people on
> s.a.a. as approximately equal to or possibly higher in quality
compared to a
> nearby Takashashi 6" fluorite.
>
> Roland Christen of AstroPhysics has also stated that the coatings on
the Aries
> optics he has seen are world-class.
>
> In any case, I've been patiently waiting for one of you Meade ED
"APO" owners
> to take the plunge on one of these Aries correctors, and be the
guinea pig for
> all of us.
>
> :-)
>
> John
>

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