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Old 24-05-2017, 04:19 PM
Tasastro (Bill)
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Tasastro is offline
 
Join Date: Apr 2017
Location: Tasmania
Posts: 36
Celestron CPC800 Mount and Tripod (No OTA)

Deforked the CPC800 GPS and now considering disposing of the mount including NexStar controller, instruction manual, and tripod. In two minds though and if no realistic offers I'll keep it.

Mount is in excellent cosmetic and operational condition. Had been used very little and was functioning perfectly before the deforking.

I am modifying the mount to make forking-deforking much simpler by making the OTA mounting screws accessible without having to drift the pivot shaft through the bearings on the drive side.

I will provide detailed reassembly instructions. Also if anyone is interested I can send them a pdf of the deforking procedure.

$750.00 ONO plus freight or pick up Burnie Tas.

I can provide additional photo's and freight quotation on request.

CPC Complete.jpg CPC.jpg
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Last edited by Tasastro; 25-05-2017 at 06:34 PM. Reason: Details of mount modification.
  #2  
Old 25-05-2017, 04:37 PM
Tasastro (Bill)
Registered User

Tasastro is offline
 
Join Date: Apr 2017
Location: Tasmania
Posts: 36
Modifications to the mount

I have decided to go ahead with the mount modifications to simplify the Reforking or subsequent Deforking operations and have edited the for sale post to reflect this.

From the responses to my posts on other forums I gather that very few people have actually deforked a CPC800. On these scopes the OTA attachment screws are inaccessible unless almost the entire drive system is removed and the pivot shaft pushed through the tapered roller bearing on the drive side. The shaft is a press fit and must be driven out with a hammer and drift - there is no feasible way of using a press or puller. Obviously hammering on the OTA is not desirable and could lead to damage (although there does not appear to be any ill effects on mine). I have detailed the deforking procedure in a pdf, which I can send to anyone interested.

After the modification all that is required is to remove the worm gear and worm drive system, which is a relatively simple process, for the mounting screws to be accessible. This makes swapping OTA's easy and greatly increases the utility of the mount. There is no effect on the external appearance of the mount.
 

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