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Equipment Discussions >> Classic Telescopes

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oddog
member


Reged: 11/11/08
Posts: 72
Interesting... new
      #3399473 - 10/20/09 02:23 AM

http://phoenix.craigslist.org/evl/clt/1420122492.html

...where is the focuser?

Tom Duncan


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actionhac
professor emeritus
*****

Reged: 08/09/08
Posts: 732
Loc: WA
Re: Interesting... new [Re: oddog]
      #3399988 - 10/20/09 11:28 AM

The focuser is a Edmund up by the finder rings. Finder is Edmund.
This could be a Newtonian but something tells me it might not be.
I wish I were closer.

Robert


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tim53
Pooh-Bah


Reged: 12/17/04
Posts: 1451
Loc: Highland Park, CA
Re: Interesting... new [Re: actionhac]
      #3400047 - 10/20/09 11:56 AM

Got to be a Newtonian, probably about a 6". It's interesting that the secondary mounting screws are so far down inside the tube from the sky end.

I like the machine work, especially on the mirror cell!

-Tim.

--------------------
"We`re just waiting looking skyward as the days come down.
Someone promised there`d be answers, if we stayed around."
-Orchestral Maneuvers in the Dark, "The Romance of the Telescope"


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actionhac
professor emeritus
*****

Reged: 08/09/08
Posts: 732
Loc: WA
Re: Interesting... new [Re: tim53]
      #3400219 - 10/20/09 01:28 PM

But what is the lens for? and all that work, the perportions don't seem right for a newt.
I do see some nuts around the tube near the focuser possibly for a spyder, but that big lens, what? why?

I never see anything like that around my house, I live it the dead zone. People around here just drink coffee and play with the computer thanks to Starbucks and Microsoft.
All the little children have hands that have evolved to make maximum use of a key board, curved spines from sitting and radioactive eyes. No more metal or wood shop and very little sports in school.

Robert


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tim53
Pooh-Bah


Reged: 12/17/04
Posts: 1451
Loc: Highland Park, CA
Re: Interesting... new [Re: actionhac]
      #3400292 - 10/20/09 02:08 PM

If you look closely, you'll see it's a mirror, not a lens.

Awfully clean, too, for a 60-yr old telescope.

-Tim.

--------------------
"We`re just waiting looking skyward as the days come down.
Someone promised there`d be answers, if we stayed around."
-Orchestral Maneuvers in the Dark, "The Romance of the Telescope"


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tim53
Pooh-Bah


Reged: 12/17/04
Posts: 1451
Loc: Highland Park, CA
Re: Interesting... new [Re: tim53]
      #3400295 - 10/20/09 02:09 PM

Oh, I see the lens you're referring to. Looks like a "spare part" not having to do with the scope.

-Tim.

--------------------
"We`re just waiting looking skyward as the days come down.
Someone promised there`d be answers, if we stayed around."
-Orchestral Maneuvers in the Dark, "The Romance of the Telescope"


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pogobbler
member


Reged: 09/30/08
Posts: 31
Re: Interesting... new [Re: tim53]
      #3400307 - 10/20/09 02:16 PM

What I'm assuming is being taken for a "lens" (5th photo up from the bottom) looks to me like a full aperture, glass, reflective solar filter. Though I'm not certain at all if they were around during the era of this scope.

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tim53
Pooh-Bah


Reged: 12/17/04
Posts: 1451
Loc: Highland Park, CA
Re: Interesting... new [Re: pogobbler]
      #3400347 - 10/20/09 02:31 PM

The 5th photo up from the bottom is the front side of the same thing in the 4th photo up. It's a nicely machined mirror cell, with a retaining ring to hold the mirror in, instead of clips.

-Tim.

--------------------
"We`re just waiting looking skyward as the days come down.
Someone promised there`d be answers, if we stayed around."
-Orchestral Maneuvers in the Dark, "The Romance of the Telescope"


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actionhac
professor emeritus
*****

Reged: 08/09/08
Posts: 732
Loc: WA
Re: Interesting... new [Re: tim53]
      #3400649 - 10/20/09 05:19 PM

The lens he discribes as being 4.5" is in the red/white box on the tailgate. If you click on the small "image deleted" thing above the mirror photo more pictures come up. The solar filter looking thing is a tube cover I think.
Hard to say what this is but if I lived closer I would be finding out more. This is my kind of project.
Pretty obvious the builder was skilled at metal working. I would think it would be more complex than a mere newt allthough we all know that it's hard to beat a Newtonian.


Robert


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actionhac
professor emeritus
*****

Reged: 08/09/08
Posts: 732
Loc: WA
Re: Interesting... [Re: actionhac]
      #3400731 - 10/20/09 06:00 PM Attachment (5 downloads)

I have a odd old newt that is a little similar but is just a conventional Newtonian, in the picture.

The very heavy cell with 4 collimation bolts? I just can't help thinking possibly warping the mirror to move the reflected image to the side of the tube to eliminate the secondary spider or central mounting?

Robert


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