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Old unidentified 8" newt

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#1 bob midiri

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Posted 11 June 2014 - 11:10 PM

Hi, picked up this older 8" maybe f7 newtonian its a light brandon blue in color, with a really interesting rack and pinion focuser, that also is a helical focuser for fine focus. The scope has an opical window up front. The mirror has written on its back "Dr Henry Paul" in pencil that partly came off when cleaning the mirror (dumb me)??? any clues. Im at work so cant post pixtures right now...Does anyone know if this sounds commercial or homemade...thanks Bob

#2 Chuck Hards

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Posted 11 June 2014 - 11:16 PM

Dr. Henry Paul was an authority on the amateur telescope, and author. You have a piece of history there, IMO.

Need a pic to determine if he bought it or made it, though.

#3 bob midiri

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Posted 11 June 2014 - 11:39 PM

Thanks Chuck...Ill take some pictures tomorrow

#4 bob midiri

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Posted 11 June 2014 - 11:43 PM

Chuck so I googled Dr Henry Paul amateur astronomy. There is a thread http://www.cloudynig...4846691/Main...
of a Cave scope for Dr Paul. the picture of that cave scope in blue is the color of the OTA I picked up...again, will take pictures tomorrow

#5 Datapanic

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Posted 11 June 2014 - 11:49 PM

Henry E. Paul wrote the bible (now-a-days) of Classic Scopes titled " Telescopes for Skygazing" I hope his signature on your mirror is somewhat still intact, it's a rarity indeed.

#6 bob midiri

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Posted 12 June 2014 - 01:25 AM

Well he signed it in pencil...I washed the mirror because it was crudy, and of course part of his signature is now gone...I didnt think it was pencil. Whats left is Henry Pa...I look again when I get home and take pictures. How can I preserve the rest of his name?

#7 bob midiri

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Posted 12 June 2014 - 08:32 AM

OK Chuck here are the pictures..one of eight first the whole OTA

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#8 bob midiri

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Posted 12 June 2014 - 08:32 AM

next

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#9 bob midiri

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Posted 12 June 2014 - 08:33 AM

closeup of focuser

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#10 bob midiri

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Posted 12 June 2014 - 08:34 AM

mirror cell and front of tarnished mirror this is 8"

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#11 bob midiri

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Posted 12 June 2014 - 08:35 AM

optical window hopefully u can see where the secondary is attached at middle

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#12 bob midiri

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Posted 12 June 2014 - 08:36 AM

next few backside of mirror and whats left of the signature (PS should I place some scotch tape over this to preserve?)

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#13 bob midiri

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Posted 12 June 2014 - 08:37 AM

another angle

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#14 bob midiri

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Posted 12 June 2014 - 08:38 AM

last of name

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#15 bob midiri

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Posted 12 June 2014 - 08:39 AM

one other shot

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#16 Chuck Hards

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Posted 12 June 2014 - 09:03 AM

Certainly some Cave elements on there, including the Sky-Micro focuser which Cave used for some time. But a lot of modifications, as well. Obviously Dr. Paul was a serious observer.

Those two bands mid-tube on the OTA look to possibly be the inner races of a rotating tube ring assembly.

#17 tim53

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Posted 12 June 2014 - 09:09 AM

The focuser is a Sky Micro. Telescopics sold these back in the good old days. Wonderful focusers when adjusted properly (and easy to do).

Here are a couple of mine. The one on the left is a Sky Micro Giant 2" focuser from my Cave Model D Transportable Observatory. I took it off to strip the peeling paint and repaint it with new wrinkle black. The one on the right is now on one of my 8" f/6 Optical Craftsmen OTAs. It had been painted flat black, including the knobs!

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-Tim.

#18 tim53

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Posted 12 June 2014 - 09:11 AM

Certainly some Cave elements on there, including the Sky-Micro focuser which Cave used for some time. But a lot of modifications, as well. Obviously Dr. Paul was a serious observer.

Those two bands mid-tube on the OTA look to possibly be the inner races of a rotating tube ring assembly.


Could this have been a Coast Instrument Galaxy OTA? They were blue like that. But they likely got their tubes from Parks, so I suppose a home-builder could have as well.

Galaxies had massive rotating rings, though.

-Tim.

#19 Datapanic

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Posted 12 June 2014 - 09:55 AM

Well he signed it in pencil...I washed the mirror because it was crudy, and of course part of his signature is now gone...I didnt think it was pencil. Whats left is Henry Pa...I look again when I get home and take pictures. How can I preserve the rest of his name?


It should last for years - the Warren Estes signature on the Horsetrail Cave has been on there since at least since 1978 when he died. It is also in pencil. When I had the mirror recoated, they applied some sort of tape that protected the signature and it worked fined. The coating place may have added extra care to handling it as well as they had to strip off the old coating. I keep the signature unprotected since the mirror is in its cell in the OTA. I suppose you could use some cellophane and scotch tape to cover it and still see it.

#20 amicus sidera

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Posted 12 June 2014 - 12:20 PM

Could this have been a Coast Instrument Galaxy OTA? They were blue like that. But they likely got their tubes from Parks, so I suppose a home-builder could have as well.

Galaxies had massive rotating rings, though.


Didn't Pacific Instruments use a very similar shade of blue on their OTA's, as well?

#21 teast

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Posted 12 June 2014 - 04:30 PM

You could cover the signature with a piece of see thru mylar or plastic and tape around the edges to prevent it slipping off. Just a thought.

-Tom

#22 Al Paslow

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Posted 12 June 2014 - 06:21 PM

Hi all,

Interesting find on Dr. Paul Telescope.

A couple of notes, while many telescope tubes were white Willard R. Parks offered a variety of colors besides traditional white.

Many were available in what was described as "pastel colors". The tube that you show appears to be quite a bit darker blue than what I remember Parks offering back in the late 1960's.

For example here is my home made 8 inch F8 Newtonian reflector as it now exists. The mirror was made by myself during late 1967 and into 1968 at what was described as "Brashear Center: (Yes uncle John Brashear's organization for making amateur telescopes.)

The focuser is a Telescopics Sky Micro - regular 1.25 focuser, which I machined and threaded the end to attach a camera.

The finder is a 10 x 40 mm Unitron, purchased from Unitron in 1968 or before for $ 18.00.

The tube is an original blue fiberglass Willard Parks tube; and as you can see is pretty light in color and costs $ 35.00. The end rings are heavy cast aluminum. I can remember waiting a month and a half; the tube arriving at my parents house in December 1968 shortly before Apollo 8 orbited the moon!

I put my name on the scope with a label gun and also you can see a hand written photographic moon & planets exposure guide made out of index cards still taped to the tube, all done in the early 1970's.

As for Parks tubes, they were available long ago in white, blue, grey and green. Of all the green is the rarest of all. I did see a number of grey, blue and white ones but only one green one. That one was sent to the Pittsburgh area in the late 1960's for a telescope maker by the name of Stan Packey or Packy for his 10 inch mirror. Stan unfortunately died shortly afterwards and i never saw his telescope or another green tube again.

I can say that earlier Parks tubes were a darker than mine. I have a home built 8 inch Schmidt Cass from 1965 - 1966 that has a darker blue tube. If i can pull it out of storage we can approximately help date the Paul telescope.

Al Paslow
Bethel Park, PA

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#23 jgraham

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Posted 12 June 2014 - 08:33 PM

Optron?

#24 DAVIDG

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Posted 12 June 2014 - 09:31 PM

It's a common practice that when a mirror is sent to be coated or recoated that the owners name is placed on the back by the coater. So to be sure that it is Paul's signature you need to find another example to compare them.
I believe that Paul assembled this scope. He liked optical windows to replace spiders and in his book "Telescope for Skygazing" is pictured a 6" newtonian that he assembled with an optical window.

- Dave

#25 bob midiri

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Posted 13 June 2014 - 12:34 AM

Good point Dave...Ill check it out if possible. BTW so the optical window is just to prevent spider vane diffraction? Its not an optical figured glass. Do you think he made this mirror? Cant really find much info about him on the net . Bob






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