I have an old early-model no-name (guess in which country it was made!) 80mm f/9 doublet refactor for sale. I've only ever used it as a guidescope, for which it worked very nicely. I'm not selling the Losmandy rings I used for it, but there are a pair of cheap rings which I have which fit and would work if somebody wanted them.
The 'scope works well and I upgraded the focuser to a GSO 10:1 2-inch a couple of years ago, up from the 1.25-inch ordinary rack & pinion in order to use it for visual observing (which I've never done - I have too many other telescopes). With a 2-inch eyepiece this give great low power views. However, careful examination of the Airy disc shows that the optics are not perfectly collimated - it shows slight asymmetry. However, being a modern, cheap telescope there is no way to collimate it - I have tried and failed. However, this mis-collimation would only be noticeable under high power viewing. As a guidescope (all I ever intended to use it for) and low-medium power visual use it works just fine.
It also has a poor quality (in my opinion) 5x finder. It works, but it's got quite thick, non-illuminated crosshairs.
I'm after $150 (plus postage) - mainly because of the GSO focuser upgrade. I'd happily sell the GSO focuser separately (for $50 + postage) and return the original focuser to the system (which is all I used for about 90% of it's life) and is quite fine to use anyway. I'd then sell the 'scope for $100 + postage. Whoever asks for whichever option gets to make the decision.
- Steve
Last edited by sl; 01-03-2016 at 01:26 AM.
Reason: Sale
It looks like the GSO focuser was of more interest than the old telescope. Just awaiting payment to confirm that the focuser is sold, but I've returned the original 1.25-inch focuser to the telescope and re-attached the finder. New pictures attached.
So the telescope is now for sale for $100 + postage if anybody is interested. My description of the finder was too harsh, now that I've looked at it again. The crosshairs were originally out of focus, but they are fine now that I've fixed that. It's a 6x30. The telescope performs nicely and the slight miscollimation I report is only visible under very high power and by a discerning observer.
