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Equipment Discussions >> Classic Telescopes

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terraclarke
Post Laureate
*****

Reged: 05/29/12

Loc: Just South of the Mason-Dixon ...
Re: Ruining the nostalgia?- A noninvasive fix new [Re: terraclarke]
      #6056017 - 08/31/13 01:00 PM Attachment (8 downloads)

3

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roscoe
curmudgeon
*****

Reged: 02/04/09

Loc: NW Mass, inches from VT
Re: Ruining the nostalgia?- A noninvasive fix new [Re: terraclarke]
      #6056119 - 08/31/13 01:42 PM

Here's a quick method I've used on a couple of scopes I've fixed up, one 60mm in particular that comes to mind, that had plates bolted to the sides for its original yoke mount. When I mounted it on a small GEM mount, I merely put short bolts in the holes with nuts on the inside. the bolts hid the holes, the repair looks pretty normal, and was much easier than bondo and a repaint of the tube.

For a cardboard disaster like Robert's, I'd prime it, as he has, sand it, fill it with sandable spackle, sand it with sandpaper on a wood block, and repaint it. Then, I'd mount a new finder over the repair, to camoflage it............
R


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roscoe
curmudgeon
*****

Reged: 02/04/09

Loc: NW Mass, inches from VT
Re: Ruining the nostalgia?- A noninvasive fix new [Re: terraclarke]
      #6056132 - 08/31/13 01:47 PM

Terra,
Looking at your photo, there's a spider bolt showing inside the end of the base plate, and what looks like a hole in the plate under the zip-tie. What about moving the plate forward, and replacing the existing spider bolt with a longer one that also holds the plate?
R


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terraclarke
Post Laureate
*****

Reged: 05/29/12

Loc: Just South of the Mason-Dixon ...
Re: Ruining the nostalgia?- A noninvasive fix new [Re: roscoe]
      #6056381 - 08/31/13 04:37 PM

There are four drilled holes for a finder that are under the Telrad base. If I like using the Telrad instead of the finder I can drill the Telrad base and bolt it on using the existing holes that are in two pairs, each hole in the pair ~1 3/4 inches apart and each pair about 5 inches apart. It will fit perfectly. I was just showing a non-invasive solution to the OP and a temporary fix for myself.

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Bob Myler
Carpal Tunnel
*****

Reged: 05/18/06

Loc: St Louis, MO
Re: Ruining the nostalgia?- A noninvasive fix new [Re: terraclarke]
      #6056467 - 08/31/13 06:07 PM

Terra's clever use of zip ties might prove useful with the mounting of Classic finder scopes.

Worried the metal adjustment screws will mar the finish of your tube? Wrap a zip tie under them....


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actionhac
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Reged: 08/09/08

Loc: Seattle
Re: Ruining the nostalgia?- A noninvasive fix new [Re: Bob Myler]
      #6056594 - 08/31/13 07:36 PM Attachment (4 downloads)

Damage has been repaired. That was a BIG headache fixing that mess. I have another scope with a cardboard tube and it has a taped on Telrad AND IT WILL REMAIN THAT WAY for eternity.

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actionhac
Post Laureate
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Reged: 08/09/08

Loc: Seattle
Re: Ruining the nostalgia?- A noninvasive fix new [Re: actionhac]
      #6056599 - 08/31/13 07:41 PM Attachment (3 downloads)

I have a few small screw holes up near the big hole and I decided to use one of them for a Rigel. The Rigel weighs nothing so it doesn't upset balance on fixed tube mountings like Edmund and early dobs with small bearings like this one. Notice I used self-adhesive felt on the bottom of the base to prevent marring the tube finish.
This Orion is a wolf in sheep skin. It might look like a cheapy dob from the dollarama but its not it was made by Discovery Telescopes here in the states for Orion back in the early 90's. It may have been Pirate Instruments before Discovery Telescopes.
http://www.ostahowskioptics.com/ABOUT.HTM


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terraclarke
Post Laureate
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Reged: 05/29/12

Loc: Just South of the Mason-Dixon ...
Re: Ruining the nostalgia?- A noninvasive fix new [Re: actionhac]
      #6057452 - 09/01/13 11:17 AM

Great repair job Robert. I hear you with that tape. I don't think there is any getting it off, even a painted metal tube without some repercussions. At least if it has been on very long. I had a red dot finder attached to a painted Stellarvue focuser some years ago and when I removed it, it took a coat of paint off with it, permanently marring the finish.

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actionhac
Post Laureate
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Reged: 08/09/08

Loc: Seattle
Re: Ruining the nostalgia?- A noninvasive fix new [Re: terraclarke]
      #6160783 - 10/27/13 01:56 PM Attachment (4 downloads)

I have been using my C8 on a Unistar lately so I already ruined the nostalgia somewhat.
What I did next was install a Telrad and I suppose that was the last nail in the nostalgia coffin. But I did create a super nice grab and go system for the winter months.
If you do defork any of the old Celestron CATs look at my finder mount idea presented here.
I used one of the fork bearings and cut a block of wood:


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actionhac
Post Laureate
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Reged: 08/09/08

Loc: Seattle
Re: Ruining the nostalgia?- A noninvasive fix new [Re: actionhac]
      #6160791 - 10/27/13 01:59 PM Attachment (2 downloads)

The block of wood fits on the fork bearing and is held in place by a washer and screw.

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actionhac
Post Laureate
*****

Reged: 08/09/08

Loc: Seattle
Re: Ruining the nostalgia?- A noninvasive fix new [Re: actionhac]
      #6160800 - 10/27/13 02:02 PM Attachment (3 downloads)

The Telrad base is screwed to the block. Or any finder or rings or whatever you dream up.

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actionhac
Post Laureate
*****

Reged: 08/09/08

Loc: Seattle
Re: Ruining the nostalgia?- A noninvasive fix new [Re: actionhac]
      #6160805 - 10/27/13 02:04 PM Attachment (3 downloads)

Here it is installed on the tube. Its location is perfect and does not risk damaging the telescope finish.

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actionhac
Post Laureate
*****

Reged: 08/09/08

Loc: Seattle
Re: Ruining the nostalgia?- A noninvasive fix new [Re: actionhac]
      #6160812 - 10/27/13 02:06 PM Attachment (4 downloads)

Other side with the factory optical finder, which I prefer over the Telrad. I also like having a Telrad so having both is great.
I like this set up but I will probably return it to its original fork (in the spring) because tracking will be missed. I did not alter any parts, I can return it to its past form and no evidence of my work will remain.


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