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Equipment Discussions >> ATM, Optics and DIY Forum

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TheRock
super member


Reged: 01/13/08
Posts: 113
Loc: Bergen County, NJ
18" f/4.2 Truss Dob - Milestone
      #3422522 - 10/31/09 07:54 PM

I started my home built Truss Dob back in January. With two small children to entertain, it's been a slow project to say the least. However, I have finished the tailgate, mirror cell, and most recently the secondary cage. Here is a picture of the secondary cage (minus the ABS light baffle which I'll do tomorrow)...



Three observations I have made up to this point:
1. The folks on this site are the best; always willing to answer my questions, no matter how elementary.
2. Building a scope will cost only slightly less than buying a new one, especially in my case where I've purchased some tools specfically for this project (drill press, table saw, plunge router, etc.).
3. Folks who knock the David Kriege book are insane. It has some small errors and it's somewhat dated, but for someone with no prior telescope building skills and only a limited knowledge of how they work, it is simply perfect.

Thank you all and I'll continue to lean on you for help.

--------------------
Richard
--------------------
"Get busy living, or get busy dying" - The Shawshank Redemption (1994)
--------------------
18" f/4.2 Truss Dob in Progress (2009)
Celestron CPC 1100 (2008)
Celestron 130 SLT (2008)
Tasco 114mm Newtonian (1995)
Meade 60mm Refractor (1986)
MallinCam Hyper Plus B/W



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MitchAlsup
super member


Reged: 08/31/09
Posts: 184
Re: 18" f/4.2 Truss Dob - Milestone new [Re: TheRock]
      #3422702 - 10/31/09 09:44 PM

Quote:

2. Building a scope will cost only slightly less than buying a new one,




However, the great advantage, is that by the time your scope is functional, you will have put it together and taken it apart at least 100 times. So, when you get to a dark site to use it, you can put it together and take it apart without help, without lights, knowing where everything goees while making conversation at the same time.


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TheRock
super member


Reged: 01/13/08
Posts: 113
Loc: Bergen County, NJ
Re: 18" f/4.2 Truss Dob - Milestone new [Re: MitchAlsup]
      #3422843 - 10/31/09 11:17 PM

Mitch, no complaints here. I think this is money well spent. When I had my CPC11, I would panic even putting a red-dot pointer on it because I didn't know how deep the screws would go in. With this scope, I know every inch.

--------------------
Richard
--------------------
"Get busy living, or get busy dying" - The Shawshank Redemption (1994)
--------------------
18" f/4.2 Truss Dob in Progress (2009)
Celestron CPC 1100 (2008)
Celestron 130 SLT (2008)
Tasco 114mm Newtonian (1995)
Meade 60mm Refractor (1986)
MallinCam Hyper Plus B/W



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APM America
Vendor - APM America
*****

Reged: 11/07/05
Posts: 2768
Loc: Madison. NJ. USA
Re: 18" f/4.2 Truss Dob - Milestone new [Re: TheRock]
      #3442866 - 11/11/09 09:01 PM

Beautiful work, Richard.

--------------------
Morris Bagnall
Sales Manager
www.apmamerica.com

A whole room full of APM refractors......
Seymor Rosin F/4.5 Astrograph in the making



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RonBurgundy
sage


Reged: 06/16/09
Posts: 252
Loc: Philadelphia
Re: 18" f/4.2 Truss Dob - Milestone new [Re: APM America]
      #3443062 - 11/11/09 10:57 PM

I love the finish. It's going to be beautiful, I'm sure.

--------------------
Kipp Ginsburg
8" LX200-ACF
Orion 120mm F/5.0 Piggybacked Refractor
Meade UWA Set [4.7mm-30mm]
DSI-II


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TheRock
super member


Reged: 01/13/08
Posts: 113
Loc: Bergen County, NJ
Re: 18" f/4.2 Truss Dob - Milestone new [Re: RonBurgundy]
      #3444129 - 11/12/09 03:10 PM

Thanks guys. The finish was inspired by Ross Sackett's Mark II scope as well as Robert Teeter's scopes. Closer inspection would reveal that my woodworking skills are nowhere near their's though. Important thing is I'm learning and having fun.

--------------------
Richard
--------------------
"Get busy living, or get busy dying" - The Shawshank Redemption (1994)
--------------------
18" f/4.2 Truss Dob in Progress (2009)
Celestron CPC 1100 (2008)
Celestron 130 SLT (2008)
Tasco 114mm Newtonian (1995)
Meade 60mm Refractor (1986)
MallinCam Hyper Plus B/W



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LateViewer
scholastic sledgehammer
*****

Reged: 11/17/05
Posts: 785
Loc: Westchester NY
Re: 18" f/4.2 Truss Dob - Milestone new [Re: TheRock]
      #3444142 - 11/12/09 03:18 PM

Really nice.

--------------------
12.5" Discovery Mirror String Truss Dob
DSV-1 Alt-Az Mount
WO 66mm Petzval
Orion 127mm Mak with WO 2" Dielectric Diagonal
C9.25"
Celestron CG-5 GoTo
8.8, 14, 18, and 24mm Meade UWA Series 5000 EP
32, 40mm Orion Optiluxe EP


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Grumpy_one
member


Reged: 03/30/08
Posts: 21
Re: 18" f/4.2 Truss Dob - Milestone new [Re: LateViewer]
      #3452282 - 11/16/09 10:13 PM

Looks great. And I wouldn't consider the money you spent on tooling part of the telescope budget. You'll always have those tools to build projects for the family. I like the anodized struts, gives it a real personal touch.

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