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Equipment Discussions >> ATM, Optics and DIY Forum

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tim53
Postmaster
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Reged: 12/17/04

Loc: Highland Park, CA
Re: Round Wooden Tubes? new [Re: tim53]
      #4334619 - 01/23/11 03:00 PM

Chris:

How thick a sheet of hardboard did you use to bend?

-Tim.


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Jim Curry
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Reged: 10/29/07

Loc: STL
Re: Round Wooden Tubes? new [Re: Chriske]
      #4335166 - 01/23/11 06:48 PM

Chris:
This hardboard tube construction is intriguing, can we get you to start a thread with description and maybe photos?

Jim


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Jaimo!
Pooh-Bah
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Reged: 10/11/07

Loc: Exit 135 / 40° North
Re: Round Wooden Tubes? new [Re: Jim Curry]
      #4335467 - 01/23/11 08:51 PM

I don't normally read the ATM forum, but this subject caught my attention.

Here's a tube I coopered for a Zeiss 50/540 lens. I made this scope years ago, if I remember correctly I used 22 strips of red oak...

I have flocked the inside since the photo was taken.





Edited by Jaimo! (01/23/11 09:01 PM)


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imjeffp
Aluminum Falcon
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Reged: 09/30/03

Loc: Cedar Park, Texas
Re: Round Wooden Tubes? new [Re: Jaimo!]
      #4336946 - 01/24/11 03:02 PM

I don't know the details, but the 12.5" Harlan Smith Telescope at the Austin Astronomical Society's Eagle Eye Observatory is a wooden-tube newt on a custom GEM: http://www.austinastro.org/Default.aspx?pageId=755670

Quote:

We cut the strips of cedar on my table saw and glued them to each other while mounted on a cylindrical form per the description in the 50th Anniversary issue of S&T (September, 1992). We let the tube dry for about a year in his garage while researching ideas on how best to finish the tube. Tom found someone to help him apply fiberglass inside and out to make it much stronger and resistant to moisture. After that, I lost track of how the tube was finally put into use. But now everyone knows where and how the tube came into being.




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Thomas Karpf
Carpal Tunnel


Reged: 02/09/09

Loc: Newington, CT
Re: Round Wooden Tubes? new [Re: Chriske]
      #4337005 - 01/24/11 03:34 PM

Chriske:

What are you using for an inner form for your hardboard tubes?


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Tim A.
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Reged: 09/19/07

Loc: 40 30'N 105 3'W
Re: Round Wooden Tubes? new [Re: Thomas Karpf]
      #4337550 - 01/24/11 07:03 PM

There is one word I expected to find in this thread, and did not:

Steampunk!

My dream is making an 6" f/6 Steampunk APO. Summayoo guys are way out ahead.


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tim53
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Reged: 12/17/04

Loc: Highland Park, CA
Re: Round Wooden Tubes? new [Re: Tim A.]
      #4337627 - 01/24/11 07:25 PM

Tim:

Take a look at one of Ross Sackett's Dobs. I think it's even been called "steampunk" somewhere.

I love the stuff. Wish I had the artistic bent.

...Hm... it just occurred to me that I know a graphic artist who might be able to help me come up with something!

-Tim.


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Tim A.
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Reged: 09/19/07

Loc: 40 30'N 105 3'W
Re: Round Wooden Tubes? new [Re: tim53]
      #4340643 - 01/26/11 12:11 AM

Quote:

... it just occurred to me that I know a graphic artist who might be able to help me come up with something![



Yeah. That'd be me, if we lived in the same place.

The telescope of my dreams is of brass and leather and wood and engraved cog-wheels. No stainless, no anodized aluminum, no paint, no plastic (as if!). It has understated ornamentation that befits the dignity of a scientific instrument, nothing over the top (as so much of Steampunk is). It pays homage to a bygone era, but with top-flight glass and optical design that could not have even been dreamed of back in the day. In the dark it plays with the best; in daylight, no one doubts they are in the presence of Art.

I have the ideas, but neither the tools nor honed skills. Sigh ... if you have the tools and skills, and can collaborate with a designer who understands the aesthetic (and the optics), you will together fashion an instrument that is truly one for the ages.

Ah, that I would travel to see!


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PhotoGazer
super member
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Reged: 09/26/07

Re: Round Wooden Tubes? new [Re: Tim A.]
      #4587901 - 05/17/11 11:39 PM

I am in the process of building three telescopes with wood tubes. One is based on the 127mm Carton optics from the surplus shed. The other two are Off Axis Newtonians. One will be a solid tube, and the other will be a two piece collapsible tube. I have been imaging the progress and will post links soon, I hope.

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Achernar
Postmaster
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Reged: 02/25/06

Loc: Mobile, Alabama, USA
Re: Round Wooden Tubes? [Re: tim53]
      #5787169 - 04/08/13 11:46 PM

I like your refractor, the tube looks almost too pretty to load into a vehicle and drive out to the wildernss with it.

Taras


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