Hi, I'm Jon and I just picked up an old Helios ST80 :-) I'm currently getting a pinched view of a poorly collimated scope. I have tried the tips and tricks...
Jon, If I remember correctly, slide off the Dew shield by wiggling the Dew shield, as you pull it away from the Telescope....it is held by three felt-like...
... Hi Don, Thanks very much for taking the time to reply. Much appreciated. I'm long past the point of the mods you suggest. I have had the OTA apart, the...
Hello, 80f5'ers - The recent spam message has been removed from the board and the poster as well. My apologies that it got into our system. I'll continue to...
I was looking at one earlier today - ScopeStuff has a GSO 2" Crayford focuser which slots right in for $119, with a dovetail mount for the finder costing an...
Antares Crayford from ScopeStuff by GSO is a great upgrade. I got the dual-speed focuser model, and it makes all the difference. I also got the dovetail foot...
I recently found an Antares 2FOCR2 focuser on ebay which fits my ST80 perfectly. It has 2 locking screws (not your requested compression ring) and Rack and...
... Great choice, David, this is what I have on my ST80, and it really makes all the difference. With the original focuser removed, I brushed a coat of flat...
I bought a very cheap (Chinese) 80mm scope to use as a guide scope. The lenses are dirty, but the objective cell is glued on and will require a painful...
Generally, disassembly and cleaning mostly costs your time, and a minimal amount of materials. It really boils down to if you can get the objective out...
My old 'scope was a Cosmos. The dew shield was a press fit on the lens cell and the lenses were held in place with a plastic threaded retainer that easily...
... Hi Gene, Sorry for the slow response, been away from my scope for a few days and unable to make the measurements. The focuser travel of my old Celestron...
There is a bit of play on my ST80's focusser tube. I am fairly sure that there may have been a shim put in to stabilise it, but probably the glue holding it...
... the ... cut ... focusser? Bruce, Which brand/model scope do you own? If its a Synta made model there are three shims that the drawtube slides on. The lower...
Phil Lefever wrote: Phil, it is a Synta scope. I think the black plastic piece is the bit missing - I remember finding something like that but I've probably ...
I ordered an ST80 for use as a guide scope and for birdwatching, but it is back-ordered until the 27th of Feb.. Anyone know if there is a story behind this?...
The ST80 was on the Deal of the Day sale at Orion twice last month, I think, the Astro version for $175, so that might have reduced available inventory. I...
The mounting shoe on the Skywatcher ST80 has four holes threaded to receive screws from below. Two of these holes are tapped 1/4 - 20. What is the thread size...
... Those may be M6 - double check before tightening too hard... M6 has a 25.4TPI thread (1.0MM pitch) and is a little bigger than 12-24, so there may be a...
... Thank you. I answered my own question by discovering (trial and error without any metric screws in my took kit) that the 12-24 screw did go in. How would...
... Gene, I would hazard a guess that it isn't a #12-24 machine screw. That is an uncommon size today even here in America. While I don't own a Skywatcher...
... Thanks, Phil. Certsainly, the M6's ARE available localy. I just didn't try one (from the store) because the 12 - 24 DID fit. Although it held well...
... You two were right. The M6 x 1.0 is a much better fit. And the M6 hex head is better suited for my use tha was the 12-24 slotted head. Thanks. Gene...
In reading through this group's archives a while back (after I became the owner of a used Skywatcher ST 80) I learned that the Skywatcher's is not the best of...
... If it is only a week, I'd wait and see if it is problem. You might find that if you are not touching the focuser while viewing, it won't be a problem at...
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