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ST 76.2mm f16.5 refractor

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#1 nightfisher

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Posted 20 January 2013 - 10:09 AM

I got this little beauty today, its circle K optics, same as a prinz 660, but with tasco 10TE eq mount and wooden crate, the pics show just how good a condition its in, i wont be using it with original mount, but getting tube rings to put it on the HEQ5 and AZ4 mounts to get the best from it on Luna, planets and doubles

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#2 Spyke

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Posted 20 January 2013 - 11:19 AM

Very nice! :waytogo:

#3 Masvingo

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Posted 20 January 2013 - 11:22 AM

+1

Looks a beauty!

I hope the weather co-operates for first light.

James

#4 Grava T

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Posted 20 January 2013 - 11:23 AM

NIce scope! Interesting finder scope mount and I really like the large aluminum focus knobs. Looks a little more modern than most scopes I've seen on a mount from this era.

#5 astro140

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Posted 20 January 2013 - 12:02 PM

Nice scope! 0.965 or 1.25 inch focuser?
Steve
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#6 apfever

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Posted 20 January 2013 - 12:18 PM

Focuser looks 1.25 but was it 0.965 originally? Possible change out of the eyepiece retaining ring? Personally, I try to change out the ring to 1.25" when possible on my vintage refractors (or reflectors). I still keep the original .965 ring and any proprietary eyepices with the scope, for posterity sake. Part of the pleasure of the older classics, for me, is to be able to use the original configuration just for the exprience of what the scope gave at the time. My main classic viewing is done with 1.25" if possible, but the occasional original equipment gives a different pleasure for me.

#7 nightfisher

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Posted 20 January 2013 - 01:28 PM

Yes it has a 1.25 diagonal holder fitted to the draw tube, looks similar to a vixen unit, i also have the original along with 3 0.965 ep`s with it, but it will only be used with 1.25 ortho`s, the ply box, mount and other little bits have already been consigned to the celler, i now need to order some tube rings to mount it on my AZ4

#8 Rutilus

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Posted 20 January 2013 - 03:52 PM

I have one of the very, very early Prinz 660 from the 1960's, it also came with the 1.25" eyepeice holder.
It has different tube clamp and finder scope from the model that Jules has.

The model that Jules's has were made from 1970 onwards.

#9 nightfisher

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Posted 21 January 2013 - 09:04 AM

I have a feeling mine is a late one, from the 80`s
I have ordered some tube rings for it, will just need clear skies

#10 Rutilus

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Posted 21 January 2013 - 04:13 PM

One thing I have seen with with quite a many of the 660 is that the tube is so ong that the middle section is un-painted.
On mine it was bright shiney metal. When viewing the moon I noticed some reflections and a lack of
contrast when compared to my Towa 339.
I knocked out the old baffles, repainted the inner section with a darker black paint, put a new baffle system in.
The scope was then a match for my excellent Towa.

#11 philjay

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Posted 22 January 2013 - 04:02 PM

Nice one Jules, that takes me back, especially the mount identical to my old Tasco I reckon. The focuser looks pretty solid.Keep us posted on how it goes once you get the tube rings

Phil

#12 nightfisher

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Posted 23 January 2013 - 02:17 PM

Cheers Phil, a little update i now have tube rings from TS, very fast service, and they fit oh so sweet, its now on my AZ4 mount yay

#13 photiost

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Posted 24 January 2013 - 09:25 PM


nice!

#14 nightfisher

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Posted 26 January 2013 - 02:08 PM

I am now ready for first light, but the UK weather has been awful, you astronomers across the pond have it so good, i set the scope up on the AZ4 mount and pointed it towards some tree`s a way of, and with an 18mm BGO it gave very sharp clear views, just need the rare thing of a good clear night and point it at Jupiter and some double stars, it will be very interesting to see how it performs with the trapezium in M42

#15 strdst

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Posted 26 January 2013 - 04:48 PM

Living in the maritime northwest... often compared climate-wise to the UK, I feel your pain!

other keith

#16 astroelliottuk

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Posted 26 January 2013 - 07:38 PM

NIce scope! Interesting finder scope mount and I really like the large aluminum focus knobs. Looks a little more modern than most scopes I've seen on a mount from this era.

Yes nice scope the focusser knobs /large alumiminium are not origional and they are secured by allen headed bolts also not origional ,does it matter ? not really most telescopes get upgraded over time ,it's what you see through the eyepiece that counts.
I have a prinz 660 old gold and still usable .

#17 nightfisher

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Posted 29 January 2013 - 04:19 PM

Well im pleased to say i managed a very brief first light with this on the AZ4 mount, managed x178 mag against a full moon with poor seeing, i would say its full of promise, im very happy with it

#18 nightfisher

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Posted 03 February 2013 - 04:42 AM

I had a second, very short look through this scope, and found some thing was "eclipsing" the view at high power, after some investigating, it appears the baffles in the draw tube were infringing on the view, so i have removed these, and i found that the draw tube was rather like chrome finish on the inside, so cleaned it and flocked it matt black.

Another little job i have done is to make a slightly longer dew shield, i used an old cleaned 3ltr coke bottle with some cutting to size so it slips over the original, then covered the outside with white sticky back plastic film, and flocked the inside, pics to follow

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#19 nightfisher

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Posted 04 February 2013 - 10:04 AM

above post shows the drawtube, flocked and opened up with baffles removed, this post shows the new dewshield extension, though i might make a better one soon

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#20 nightfisher

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Posted 15 February 2013 - 06:01 PM

looks like the mods worked, got a gap in the cloud tonight and pointed it at the luna surface, very sharp and clear






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