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Equipment Discussions >> ATM, Optics and DIY Forum

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Sean Cunneen
Let Me Think
*****

Reged: 08/01/07

Loc: Blue Island Illinois
Re: Post your home made scope new [Re: StarStuff1]
      #5637297 - 01/22/13 04:35 PM Attachment (338 downloads)

OMG. But they are ALL home made! How about my latest:

8"f16 Classical Cassegrain with Optics and tube by Tom M. (Niteskystargazer) rebuilt by yours truly on a Criterion Mount also rebuilt by your truly:


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barieb
member
*****

Reged: 10/30/04

Re: Post your home made scope new [Re: Sean Cunneen]
      #5637368 - 01/22/13 05:14 PM

Dobsonian stand for an 8" Celestron

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barieb
member
*****

Reged: 10/30/04

Re: Post your home made scope new [Re: barieb]
      #5637371 - 01/22/13 05:16 PM Attachment (264 downloads)

Didn't get the picture

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barieb
member
*****

Reged: 10/30/04

Re: Post your home made scope new [Re: barieb]
      #5637377 - 01/22/13 05:17 PM Attachment (234 downloads)

8" two pole dob

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barieb
member
*****

Reged: 10/30/04

Re: Post your home made scope new [Re: barieb]
      #5637379 - 01/22/13 05:18 PM Attachment (228 downloads)

Remake of 8" Starhopper

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barieb
member
*****

Reged: 10/30/04

Re: Post your home made scope new [Re: barieb]
      #5637381 - 01/22/13 05:19 PM Attachment (177 downloads)

Starhopper put away

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mikey cee
Postmaster
*****

Reged: 01/18/07

Loc: bellevue ne.
Re: Post your home made scope new [Re: Sean Cunneen]
      #5637388 - 01/22/13 05:23 PM Attachment (303 downloads)

My home brew of over 30 years in the making and evolving. Now currently an Istar 10" F/11 R30. The Jaegers 6" F/8 has a dual function of serving as a 38x finderscope and a widefield DSO locater. My philosophy is if I can't "detect" it in the 6" scope it's not going to show in the 10" because of the much higher magnifications and narrower field of view. But remember I'm in the urban city so my skies are shall we say.....rather milky? But double stars and planets.....whoooo weeee! Mike

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jasonharris
sage


Reged: 09/16/06

Re: Post your home made scope new [Re: StarStuff1]
      #5637449 - 01/22/13 05:52 PM Attachment (270 downloads)

I think the old forums may have had a thread like this..

Here are the two scopes I have built, a 16" dob which I only have one photo handy. Guy grunting behind it is not me

The other is the 12.5" rc I did a little while back.


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jasonharris
sage


Reged: 09/16/06

Re: Post your home made scope new [Re: jasonharris]
      #5637450 - 01/22/13 05:53 PM Attachment (189 downloads)

And the RC.

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Gary Fuchs
Pooh-Bah
*****

Reged: 05/22/06

Loc: Easton, PA, USA
Re: Post your home made scope new [Re: droid]
      #5637496 - 01/22/13 06:23 PM

My 4.25" Delmarva Schief...



Gary


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cpr1
professor emeritus
*****

Reged: 03/24/12

Loc: Louisiana
Re: Post your home made scope new [Re: Gary Fuchs]
      #5637532 - 01/22/13 06:49 PM

Remake of my Z12 next to my Z10.



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Pinbout
Postmaster
*****

Reged: 02/22/10

Loc: nj
Re: Post your home made scope new [Re: cpr1]
      #5637558 - 01/22/13 07:01 PM Attachment (194 downloads)

my rehab'ed truss. [dragons represent the heavens so I thought its not incongruent]

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StarWrangler
scholastic sledgehammer


Reged: 09/03/04

Loc: Three Rivers, MI U.S.A>
Re: Post your home made scope new [Re: André Heijkoop]
      #5637569 - 01/22/13 07:11 PM Attachment (253 downloads)

My Little scope was made by the late
John Poaska of the kalamazoo Astronomical Ssociety

It is a 52 WWII bino lens.

Alan O.


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StarWrangler
scholastic sledgehammer


Reged: 09/03/04

Loc: Three Rivers, MI U.S.A>
Re: Post your home made scope new [Re: StarWrangler]
      #5637571 - 01/22/13 07:13 PM Attachment (171 downloads)

Another view
of the John Paska scope

Alan O.


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StarDusty
sage


Reged: 10/02/07

Loc: Parsippany, NJ
Re: Post your home made scope new [Re: StarStuff1]
      #5637914 - 01/22/13 10:39 PM Attachment (267 downloads)

You can see the rest:

16" Dob
13" Dob
6" f/5.6
6" f/12

On my website listed below


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mconnelley
sage


Reged: 03/14/06

Loc: Hilo, HI
Re: You asked for it... new [Re: Pinbout]
      #5638184 - 01/23/13 02:00 AM

Hello:

For my 20" f/4 ballscope, the collimation is indeed done from the front. The silvery bits you can see around the mirror are the face clips that keep the mirror from falling out. I can use the screws that attach the top ring to the truss poles to effectively lengthen or shorten the truss poles. Depending on your point of view, this either A) tilts the ball relative to the truss or B) tilts the truss relative to the ball. Either way, I can get it so that the optical axis of the primary mirror goes through the middle of the focuser. Since the truss is a hexapod, I could also use the truss screws to tilt the secondary. However, for the sake of simplicity, I use the usual collimation screws on the back of the secondary to tilt it so that the truss screws are just for primary mirror collimation.

Cheers
Mike


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dave brock
professor emeritus


Reged: 06/06/08

Loc: Hamilton, New Zealand
Re: Post your home made scope [Re: jasonharris]
      #5638194 - 01/23/13 02:20 AM

Quote:

Here are the two scopes I have built, a 16" dob which I only have one photo handy. Guy grunting behind it is not me The other is the 12.5" rc I did a little while back.




As I know Jason I thought I would point out that the guy in the rc pic is not him either

Dave


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dave brock
professor emeritus


Reged: 06/06/08

Loc: Hamilton, New Zealand
Re: Post your home made scope [Re: dave brock]
      #5638196 - 01/23/13 02:25 AM Attachment (192 downloads)

One of my early efforts, an 8" Dob with optional folding stand.

Dave


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neo
Carpal Tunnel
*****

Reged: 02/12/08

Loc: Iasi, Romania
Re: Post your home made scope [Re: dave brock]
      #5638303 - 01/23/13 06:48 AM Attachment (212 downloads)

My little Uberfractor I made a while ago out of a Rodenstock lens. Very nice flat field RFT which should be very good for wide field imaging. The quick and dirty Alt-Az mount seats on an old eq3 tripod tuned also for better stability.

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droid
rocketman
*****

Reged: 08/29/04

Loc: Conneaut, Ohio
Re: Post your home made scope [Re: dave brock]
      #5638307 - 01/23/13 06:52 AM Attachment (214 downloads)

Mine is home made, though not by myslef, but rather by a Ohio ATM named Jason Hissong
http://www.cloudynights.com/ubbthreads/showflat.php?Cat=0&Board=atm&N...


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