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Post by Deleted on Mar 21, 2017 4:18:09 GMT
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Post by howie1 on Mar 21, 2017 12:07:32 GMT
Nothing wrong with that package ... I have one just like it. But ... when you have a widefield scope like the ED80, the guider scope does not have to be very powerful / long focal length and a Orion finder/guider works very well and has less weight on the ED80/mount. What do I mean by finder guider .... like the second image down below. Looks like a 50mmx162mm normal finder but with a hole at the end for the guide camera to go into, and also fits to your main tube via a normal finderscope shoe ... But if you still go ahead with the awesome ST80 guidescope package ... then you fix it to your ED80 like this first photo down below. The dovetail supplied in the awesome kit bolts with a 1/4" bolt (should be supplied in the kit) onto the 1/4" bolt holes on the top of the ED80 tube rings ....
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Post by Deleted on Mar 21, 2017 12:36:07 GMT
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Post by davy on Mar 21, 2017 13:14:09 GMT
I use the Orion mini guide scope,,as Howie says you only need a small wide angle scope for guiding
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Post by johnno on Mar 22, 2017 13:10:55 GMT
Davo, $419 seems a bit expensive just to have a guide camera setup.
If you look at Howies 2nd photo that's how I have my cam setup on my ED80 using the original finder scope and bracket and just buy a nose piece adapter for the camera to attach it to the finder scope.
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Post by ChrisV on Mar 22, 2017 23:58:50 GMT
Davo. That guidescope is similar to what I've got. I reckon that price might be okay for Australia ??
I got a 50mm guidescope off eBay ($105) which looks very similar to that. I didn't have to buy the camera as I already had a zwo asi290. The nice things about the guidescope is that it has a T-thread and a 1.25". I just used the T-thread as the ZWO screws directly into that so its really solid. And it didn't need any extensions to get into focus
I think the prostar looks like it might have better screws on the tubes rings. I replaced the plastic tube rings on mine with some from ADM accessories (bought second hand). The dovetail I think, is the size used on finderscopes. I didn't use that. Instead I screwed the guidescope onto a vixen dovetail. And got two small vixen-style adaptors and screwed those onto the tube rings of my scope. So then its easily attached and removed. I'll put up a pic when I get home.
Edit: Now I look on eBay - there's nothing under ~$150 !!! I only bought mine a month or so ago for $105. So that's not too different to $199 for the prostar (which looks like it has better tube rings and screws anyway).
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