Mounting an ST80 on top of an ED

[Mikejh]

I have put a long dovetail on the ST80 so I can attach it to the mounting rings on the ED80. I am using the camera mount bolt on one ring and need another of these bolts for the other ring-can anyone advise if I can just buy these camera mount bolt to go into the other ED80 ring and where?- Thanks

[The Sailor]

I do believe the screw is 1/4" Whitworth, they are available on eBay, you will need the countersunk type.

Jim

[Auntystatic]

the bolts are 1/4" UNC (unified course) thread, you might be able to get one from FLO or modern astronomy, give them a call or send them an email.

When I did it I removed the camera bolt and used metric bolts pushed through from underneath and screwed in to the holes in the center of the dovetail bar, it was easier and quicker than sourcing another camera screw

[Mikejh]

Thanks guys that is most helpful. I will start ringing around Monday - I would like to get the same bolt as is already included, but I realise that may not be possible. Thanks

[steppenwolf]

1/4" Whitworth and 1/4" - 20 UNC are to all intents and purposes interchangeable. I normally use this company for my bolts.

[Mikejh]

Thanks guys