Prinz Optics 550 - Anybody have one?
Posted 09 August 2011 - 03:50 PM
I found on a terrestrial first light, that this appears to be a good objective, but with very poor contrast. On removing the focuser assembly, I discovered two baffles in the tube; both reflecting huge amounts of light. If anyone has one of these, and they'd be agreeable to removing the focuser, I would like the measurements of the two baffles from each end. The reason I need this is because from marks I found, I suspect that one of these has been removed at some time, and I can't be sure if it's in the correct position. How critical these two baffle positions are, I'm not sure?
If somebody has one of these scopes and doesn't feel inlclined to remove the focuser, I don't mind in the least; I'd still be interested in opinions of this model.
p.s. pics will follow eventually.
Posted 09 August 2011 - 04:21 PM
Posted 09 August 2011 - 06:11 PM
I thought you might be along. The 550 is also 60x910 but circle K. As soon as I get it together, I'll do an album. I did do a piccy of the focuser today, which you can see at the bottom of this page:
The wooden tripod is the sturdiest of all the wooden tripods I have. The mount is heavy and simple; no setting circles. The finder fits in a reducing dovetail, and is pretty good, although it had been severely abused by somebody very heavy handed! If the blackening I intend to do helps the contrast to a marked degree, I suspect I will be very happy with this scope.
How does your 500 perform?
Posted 10 August 2011 - 08:58 AM
Posted 10 August 2011 - 08:28 PM
You may well have something here.
p.s. I have replied to your other mail to me.
Posted 12 August 2011 - 02:32 AM
Posted 12 August 2011 - 02:34 AM
Posted 12 August 2011 - 02:43 AM
baffle from eyepiece end 74.4mm
baffle from objective end 6.3mm
diameter of baffle hole 14.4mm (both baffles believed to be identical - but its a bit difficult measuring a hole diameter 74mm down a tube - a small bar inserted into the draw tube and rested inside the baffles appeared to be parallel.
Posted 12 August 2011 - 07:05 AM
Posted 12 August 2011 - 01:00 PM
Posted 12 August 2011 - 02:15 PM
Posted 18 January 2012 - 05:13 PM
Posted 19 January 2012 - 03:02 PM
I have a complete Astral 500 package incoming soon...
Posted 19 January 2012 - 03:10 PM
Posted 19 January 2012 - 04:55 PM
Posted 20 January 2012 - 02:05 AM
Posted 20 January 2012 - 05:42 AM
Hi yes I have one it was given to me as a present in about 1968, used it a lot then, even got an A level in Astronomy, now 44 years later still have it and got it out of its box tonight for the first time in over 30 years it still looks ok, thought it was not very good at the time as unless you had at least a 3 inch refractor or an 6 inch relector it wasn't a proper telescope
Just picked your post up. I'd be very interested to see pics of your scope if possible? If you don't want to post here, PM me and I'll send you my email address. You don't give your location in your details, but if you're anywhere near me (Peterborough UK) I'd love to see your scope.
Posted 20 January 2012 - 03:00 PM
Posted 22 March 2012 - 10:03 AM
Lucky boy, yours is in far better condition than mine! Could you do me a couple of close-up piccies of just the mount please? I've still not found anybody else who has one of these scopes; so far we're the only two.
Posted 22 March 2012 - 12:50 PM
Look forward to close-ups if you can manage them.