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Equipment Discussions >> Cats & Casses
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jonbosley
professor emeritus


Reged: 10/19/05
Posts: 540
Loc: Texas
Help needed for C11 visual back
      #2544525 - 07/27/08 03:50 PM
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Hi,

I bought a used C11 which came with a adapter on the rear cell to use 2inch equipment (the factory one had been replaced). This is great for using at f10 but I have a f6.3 celestron reducer that will not attached. I bought the 1/14 celestron visual back which does fit to the reducer but not to the rear of the telescope (even when I remove the 2inch visual back. The hole at the rear cell is to large. There must be a standard part that has been removed. I contacted Celestron but have not got the issue sorted yet.
What is the part that I need and where can I get it?

Thanks

Jon

--------------------
C11 XLT Celestron
Atlas Goto Mount on Concrete Pier
WO 66 SD Doublet APO Refractor
Philips SNC900NC Webcam
Faymax FC-1000m Webcam with cooling fan
Orion Star Shoot Deep-Space CCD
POD Observatory

www.whitedwarfobservatory.com



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Skywatchr
Carpal Tunnel
****

Reged: 06/03/06
Posts: 1539
Loc: North-Central Pa.
Re: Help needed for C11 visual back new [Re: jonbosley]
      #2544591 - 07/27/08 04:30 PM
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It is the 3" visual back you need. It threads to the 3" and reduces it to the standard SCT thread. I may have one around here somewhere. Is this an older C11?

Jeff

--------------------
18" F/5 Home-Built Dob. with Mike Dudley Mirror
Highly Modified Meade DS-16 in Roll Off Roof
6" F/15 Brass w/ D&G Lens on DS-16 Mount
DS-10 10" F/4.5 Newtonian
LXD650, LX200 Classic
Orange Tube C11
DayStar 0.45 with multiple ERFs
Vixen ED80sf
11x80 Meade, 20x80 Celestron binocs (Japan Made).
Lots of Naglers and 8mm and 13mm Ethos.
Gadgets and parts everywhere.
And a Wife that loves it as much as me!


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jonbosley
professor emeritus


Reged: 10/19/05
Posts: 540
Loc: Texas
Re: Help needed for C11 visual back new [Re: Skywatchr]
      #2544661 - 07/27/08 05:14 PM
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I believe its quite new (not the classic) as it has XLT coatings. I buy the 3" visual back if you have one.

Thanks,

Jon

--------------------
C11 XLT Celestron
Atlas Goto Mount on Concrete Pier
WO 66 SD Doublet APO Refractor
Philips SNC900NC Webcam
Faymax FC-1000m Webcam with cooling fan
Orion Star Shoot Deep-Space CCD
POD Observatory

www.whitedwarfobservatory.com



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Wmacky
professor emeritus


Reged: 11/24/07
Posts: 547
Loc: Middleburg Fl US
Re: Help needed for C11 visual back new [Re: jonbosley]
      #2544714 - 07/27/08 05:49 PM
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You can use this adaptor, and still keep you 2" VB.

http://www.scopestuff.com/ss_taep.htm

--------------------
William

C-11 SCT
EON 80ED
CGE
Canon 40D
Phillips SPC900
SS Autoguider
Scopebuggy



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Skywatchr
Carpal Tunnel
****

Reged: 06/03/06
Posts: 1539
Loc: North-Central Pa.
Re: Help needed for C11 visual back new [Re: Wmacky]
      #2544773 - 07/27/08 06:20 PM
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That's not a bad idea. That way there won't be the screwing and unscrewing to change the VBs out. And it's easier to rotate things too!

Jeff

Quote:

You can use this adaptor, and still keep you 2" VB.

http://www.scopestuff.com/ss_taep.htm



--------------------
18" F/5 Home-Built Dob. with Mike Dudley Mirror
Highly Modified Meade DS-16 in Roll Off Roof
6" F/15 Brass w/ D&G Lens on DS-16 Mount
DS-10 10" F/4.5 Newtonian
LXD650, LX200 Classic
Orange Tube C11
DayStar 0.45 with multiple ERFs
Vixen ED80sf
11x80 Meade, 20x80 Celestron binocs (Japan Made).
Lots of Naglers and 8mm and 13mm Ethos.
Gadgets and parts everywhere.
And a Wife that loves it as much as me!


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jonbosley
professor emeritus


Reged: 10/19/05
Posts: 540
Loc: Texas
Re: Help needed for C11 visual back new [Re: jonbosley]
      #2546018 - 07/28/08 11:11 AM
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Hi,

Thanks guys this looks like just the thing I need. I would only need to use it when I use the corrector set-up.


Jon

--------------------
C11 XLT Celestron
Atlas Goto Mount on Concrete Pier
WO 66 SD Doublet APO Refractor
Philips SNC900NC Webcam
Faymax FC-1000m Webcam with cooling fan
Orion Star Shoot Deep-Space CCD
POD Observatory

www.whitedwarfobservatory.com



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Wmacky
professor emeritus


Reged: 11/24/07
Posts: 547
Loc: Middleburg Fl US
Re: Help needed for C11 visual back new [Re: jonbosley]
      #2546527 - 07/28/08 03:43 PM
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The good thing about that adapter is if you decide to install a Crayford Focuser later, you can still use it with the reducer.

--------------------
William

C-11 SCT
EON 80ED
CGE
Canon 40D
Phillips SPC900
SS Autoguider
Scopebuggy



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