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Main
Date: 13 Jun 2007 16:27:19
From: Starlord
Subject: EP maybe?
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Of the astronomy things I got last weekend, ont is one of those telescopes
that I think is supost to have no barriers in it's path, it has a main
mirror, looks to be about either 4 or 6inch and it's below the normal path,
the mirror is aimed towards the front of the main area and in there is a
3inch mirror (maybe 4inch) that sends the light back to the user end, only
my user end has no ep there, from the way it looks, there was someone put
there at one time to hold an ep, it's a bit old, and I'm thinking of trying
to restore it to use. anyone know of any plands or drowings of such scops?
--
The Lone Sidewalk Astronomer of Rosamond
Telescope Buyers FAQ
http://home.inreach.com/starlord
Sidewalk Astronomy
www.sidewalkastronomy.info
AD World
http://www.adworld.netfirms.com/
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Date: 13 Jun 2007 22:45:03
From: Bob Knowlden
Subject: Re: EP maybe?
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I'm just guessing from your description. Is the second, smaller mirror
convex? (It would only be weakly curved, so it could be a little hard to
tell.)
If so, it may be one of these:
http://telescopemaking.org/schief.html
and here:
http://www.atmsite.org/contrib/Holm/bulletina/index.html
(a schiefspiegler). It looks like the design uses a focuser of the same sort
used in refractor telescopes.
When I Googled the Schiefspiegler, I got over 14,000 hits.
Good luck with it. I had the pleasure, more than 25 years ago, of getting a
look through a prototype 3" schiefspiegler from the original Coulter
company. It gave the highest contrast image of Saturn of any 3" telescope
I've ever used. (It may also have been the bulkiest and heaviest 3"
telescope I ever used, which may be why it never went into production. It
was mostly made of particle board.)
HTH.
Bob Knowlden
Address scrambled. Replace nkbob with bobkn to reply.
"Starlord" <starlord@sidewalkastronomy.info > wrote in message
news:u5GdndlLStf74O3bnZ2dnUVZ_ternZ2d@inreach.com...
> Of the astronomy things I got last weekend, ont is one of those telescopes
> that I think is supost to have no barriers in it's path, it has a main
> mirror, looks to be about either 4 or 6inch and it's below the normal
> path, the mirror is aimed towards the front of the main area and in there
> is a 3inch mirror (maybe 4inch) that sends the light back to the user end,
> only my user end has no ep there, from the way it looks, there was someone
> put there at one time to hold an ep, it's a bit old, and I'm thinking of
> trying to restore it to use. anyone know of any plands or drowings of such
> scops?
>
>
> --
> The Lone Sidewalk Astronomer of Rosamond
> Telescope Buyers FAQ
> http://home.inreach.com/starlord
> Sidewalk Astronomy
> www.sidewalkastronomy.info
> AD World
> http://www.adworld.netfirms.com/
>
>
>
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Date: 13 Jun 2007 22:02:51
From: Starlord
Subject: Re: EP maybe?
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That's the kind it is, I've not checked the mirriors just yet, but they both
look like their the good kind of mirror, I'll chck them out thursday
afternoon but those plans sure looked like the same kind of scope. I do know
that the smaller mirror up in the long body has adjustment bolts on it's
back side, so that's who to do any alinement. I'll need to build a mound and
put an EP into it.
--
The Lone Sidewalk Astronomer of Rosamond
Telescope Buyers FAQ
http://home.inreach.com/starlord
Sidewalk Astronomy
www.sidewalkastronomy.info
AD World
http://www.adworld.netfirms.com/
"Bob Knowlden" <nkbob@comcast.net > wrote in message
news:jbudnTIfz-kINu3bnZ2dnUVZ_hudnZ2d@comcast.com...
> I'm just guessing from your description. Is the second, smaller mirror
> convex? (It would only be weakly curved, so it could be a little hard to
> tell.)
>
> If so, it may be one of these:
>
> http://telescopemaking.org/schief.html
>
> and here:
>
> http://www.atmsite.org/contrib/Holm/bulletina/index.html
>
> (a schiefspiegler). It looks like the design uses a focuser of the same
> sort used in refractor telescopes.
>
> When I Googled the Schiefspiegler, I got over 14,000 hits.
>
> Good luck with it. I had the pleasure, more than 25 years ago, of getting
> a look through a prototype 3" schiefspiegler from the original Coulter
> company. It gave the highest contrast image of Saturn of any 3" telescope
> I've ever used. (It may also have been the bulkiest and heaviest 3"
> telescope I ever used, which may be why it never went into production. It
> was mostly made of particle board.)
>
> HTH.
>
> Bob Knowlden
>
> Address scrambled. Replace nkbob with bobkn to reply.
>
> "Starlord" <starlord@sidewalkastronomy.info> wrote in message
> news:u5GdndlLStf74O3bnZ2dnUVZ_ternZ2d@inreach.com...
>> Of the astronomy things I got last weekend, ont is one of those
>> telescopes that I think is supost to have no barriers in it's path, it
>> has a main mirror, looks to be about either 4 or 6inch and it's below the
>> normal path, the mirror is aimed towards the front of the main area and
>> in there is a 3inch mirror (maybe 4inch) that sends the light back to the
>> user end, only my user end has no ep there, from the way it looks, there
>> was someone put there at one time to hold an ep, it's a bit old, and I'm
>> thinking of trying to restore it to use. anyone know of any plands or
>> drowings of such scops?
>>
>>
>> --
>> The Lone Sidewalk Astronomer of Rosamond
>> Telescope Buyers FAQ
>> http://home.inreach.com/starlord
>> Sidewalk Astronomy
>> www.sidewalkastronomy.info
>> AD World
>> http://www.adworld.netfirms.com/
>>
>>
>>
>
>
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