Quark to ed80 adapter

[msh1]

hi guys the one thing about astro/solar imaging that annoys me is trusting the little eyepiece screws that hold adapters to focusers it just causes tilt and i dont trust them to hold over a grands worth of quark/cameras ,so i sent john from jtechdesign an email john makes a lot of the adapters for flo, and as he lives about an hr from me we arranged to meet and discuss making an adapter to attach quark to ed 80 and to incorporate filter holder. we spent about an hr talking over the problems tilt etc and measuring thread sizes  overall length and cost. john said to leave it with him and he would come up with a design but he was busy making stuff for flo so it would be a few weeks until he could get around to it . after a week or so john sent me an email with the design it was in three parts the main body a 50mm adapter and the section that screws onto the focus tube , looked ok to me . 3 weeks later john said it was ready to collect so off i trundled  up to north devon, unfortunately there was a minor fault with it the filter nose piece was about 10mm to long we realised that inside focus tube there is a shoulder and the filter wouldn't fit inside , so left it with john for v2 to be made ,3 days later it was in the post and it is fantastically well made and works perfectly

 i didnt photo a closeup of the adapter but it can be seen in the bottom 2 images and it is at focus

the length inc the adapter is appx 150mm

just like to say john is a top bloke 

mark

ps an image from today 

[triton1]

Wow mind blowing detail there,well done

[laudropb]

very nice image . Thanks for posting.

[skybadger]

I'm guessing that the filter is a uv/ir cut or a red bandpass. Did you have a specific reason for one at 80mm aperture or are you taking the long term safety route ? Also is there a reason you chose not to use the 28mm (1.25") fitting already on the Quark filter ?

I've done something very similar with my Skywatcher ST80 using a T2 to M48 2" filter adapter from Omegon and TS. The final problem to resolve is the tilting of the camera after the Quark to remove the Newtons rings caused by being so square-on to an interferometer. Those are £50 sized to fit the Quark eyepiece mount thread from Rowan Astronomy..

regs

Mike