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Which are the rarest refractors?

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153 replies to this topic

#126 Eric H

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Posted 10 February 2020 - 01:19 PM

1 of 2, APM/LZOS 150mm F6 Fluorite triplet.

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Edited by Eric H, 10 February 2020 - 01:22 PM.

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#127 Lucullus

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Posted 10 February 2020 - 02:05 PM

1 of 2, APM/LZOS 150mm F6 Fluorite triplet.

What focuser size is that?

 

P.S. I like the sentence on your door!


Edited by Lucullus, 10 February 2020 - 05:37 PM.


#128 Eric H

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Posted 10 February 2020 - 02:54 PM

What focuser size is that?

4" AP



#129 25585

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Posted 10 February 2020 - 04:26 PM

One for Chas to consider.... 8.5" F12

 

https://www.astrobuy...php?view=157011


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#130 Tyson M

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Posted 17 February 2020 - 06:54 PM

There is an extremely rare TV140 on the classifieds right now.  Too rich for my blood but I am sure someone here would appreciate it.



#131 Lucullus

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Posted 18 February 2020 - 03:46 AM

You mean the "Tele Vue 140mm f/5 Apochromatic Rich Field Refractor"?

Only 37 made! Wow.


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#132 mikeDnight

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Posted 18 February 2020 - 05:37 AM

This 4" F10 achromat is definitely a rare one!  It was the first 4" refractor I ever owned and was made by a local optical company in Lancashire, England between 1981/83. Only ten were made in total. It had a nice mahogany tripod and brass draw tube, with a powder black main tube. It was only good upto about 150X, but it gave some very nice views of star fields, comets & nebulae. It was this scope that gave me my first really memorable view of M42, so I can't criticise it too much. The mount was a pain, but as I only paid £99 for the whole thing I shouldn't grumble. I seem to remember I had a 25mm orthoscopic and a 12.5mm orthoscopic and that was it. The scope showed quite a bit of red but I didn't care as it was all i could afford at the time, and it was certainly good enough to set me on my path to refractor heaven. Plus it was cool to look at! I never yearned for a reflector!

 

post-41880-0-02548600-1449758858.jpg


Edited by mikeDnight, 18 February 2020 - 05:40 AM.

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#133 George Ionas

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Posted 18 February 2020 - 05:49 AM

I am one of the lucky 37 that has a TV-140 f/5 Apochromate Rich Field Refractor, mine is #16.

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#134 Kent10

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Posted 18 February 2020 - 09:16 AM

I have TV-140 #33.  I have seen the total of 37 referenced many times but I have never seen another with a serial # larger than my #33.  I also have heard that TV has never disclosed the precise # so I wonder if there really are 37 and where that # came from.

 

 

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#135 Paul G

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Posted 18 February 2020 - 09:45 AM

One of the TV 140’s was damaged in a flooded basement.



#136 bobhen

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Posted 18 February 2020 - 03:16 PM

Fro those interested, a TV 140 F5 refractor was just listed in the CN Classifieds. Scope is offered at $9,500.

 

Bob 



#137 GrayRonk

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Posted 18 February 2020 - 04:46 PM

The 12-inch Zeiss and the piggyback 9½-inch Zeiss at the Griffith Observatory are both pretty rare.

http://www.griffitho...pe_history.html



#138 Kunama

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Posted 18 February 2020 - 05:31 PM

Skylight AR101.15 all brass version ........ 1 of only 2 

Berry&Mackay 3.25" F15 ......................... 1 of only 1 

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Edited by Kunama, 18 February 2020 - 05:32 PM.

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#139 Ludwig Combrinck

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Posted 11 March 2021 - 01:39 PM

I have a 5" refractor with Lichtenknecker objective, made in West Germany. Mid 1970's. Probably the only one made as it was a prototype. I have all the blueprint engineering drawings as well.
 



#140 Paul G

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Posted 11 March 2021 - 08:50 PM

I have a Moonraker 60 mm f/16.7 telescope.  Absolutely beautiful with great images.  Mine is serial number 10 (2015).

David

Pics?


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#141 alan.dang

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Posted 12 March 2021 - 04:28 AM

IMHO the VDS100 is not exactly "rare": I guess that not many have been sold, but as long as it is in Vixen's catalogue it can be purchased quite easily (the worst is to have to wait for a while for it to be delivered).
In fact, having seen one in action, for a while toyed myself with the thought of purchasing one for travels, but after a chat with the vendor dropped such plan as it would have not accomplished the planned goal; the telescope was however readily available.

Maybe in a few years after the end of production it will become a "rare" refractor (as are not exactly common its "ancestors", the Pentax SDUFs); however, having been designed almost exclusively as an astrograph, I do not think will hold its value as well as "visual-geared" models, the digital sensors evolving much faster than human eye...


Just to follow up on this, the two final VSD100s to be brought to the US last year were purchased by me and a friend. Based upon the serial numbers, which weren’t consecutive but close, and looking at the various serial numbers online, I believe the production run was 300 units.

By comparison, the AP Traveler 105 was about 700 units (695 is highest confirmed serial)

The TEC110FL had about 80 units.
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#142 25585

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Posted 12 March 2021 - 08:56 AM

I have 2 Tele Vue brass Renaissance refractors, an 85 & 102, both later models. Does anyone know how many Renaissance for each of the original, SDF, TV101, TV102 & 85 were made.


Edited by 25585, 12 March 2021 - 08:57 AM.

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#143 Kevin Barker

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Posted 12 March 2021 - 11:01 AM

Fro those interested, a TV 140 F5 refractor was just listed in the CN Classifieds. Scope is offered at $9,500.

 

Bob 

There is one of these in Palmerston North, New Zealand. Owner George Ionas. I have looked through George's scope using low powers. Star fields are absolutely stunning. OK I see it above. It is a lovely scope.


Edited by Kevin Barker, 12 March 2021 - 10:45 PM.


#144 Kent10

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Posted 12 March 2021 - 11:47 AM

There is one of these in Palmerston North, New Zealand. Owner George Ionas. I have looked through George's scope using low powers. Star fields are absolutely stunning. 

George posted a picture of his in post #133.  Mine is posted in post #134.  I agree.  The wide view of star fields is crazy beautiful.  I don't know if it is better than say a Tec 140 but it doesn't really matter for me.  I have larger Tecs.  It would be fun to compare them though.  I imagine at higher power on the moon and planets a Tec 140 might be better but it would be interesting to see if I could see a difference.  And is the wide field actually flatter considering the TV-140's Petzval design?


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#145 LunarObserver

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Posted 12 March 2021 - 12:31 PM

Paul G

The Moonraker 60 mm f/16.7 refractor is a most beautiful telescope with beautiful images.  Canton lens.

David

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#146 Paul G

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Posted 12 March 2021 - 01:11 PM

Paul G

The Moonraker 60 mm f/16.7 refractor is a most beautiful telescope with beautiful images.  Canton lens.

David

That is sweet!!!!!



#147 Ludwig Combrinck

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Posted 12 March 2021 - 02:51 PM

I have a 5" refractor with Lichtenknecker objective, made in West Germany. Mid 1970's. Probably the only one made as it was a prototype. I have all the blueprint engineering drawings as well.
 

This 5 inch refractor can be seen at
https://sites.google...ctor-telescopes



#148 teashea

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Posted 12 March 2021 - 07:39 PM

Right now most quality refractors are unobtanium.  For example only 5% of Takahashi refractors are available in the US.



#149 Darren Drake

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Posted 12 March 2021 - 09:37 PM

WO red 10th Anniversary 80mm.  It says fluorite doublet on the lens cell but it's actually an FPL53 element.  There were 2 100 runs made so only 200 in existence.   It's not real rare but not real common either...

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#150 Kevin Barker

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Posted 13 March 2021 - 02:34 AM

IMG_1082.jpg
This photo shows my APQ130/1000 only 140 made. Top notch optics.
The big red refractor is even rarer, it has a Istar 180 f-8 R30 lens. The full thickness version. Not many of those around.

 


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