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Pentax refractors

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#1 PJ Anway

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Posted 02 May 2007 - 12:43 PM

If you have an unlimited bank roll, this may interest you:
http://www.astromart...ified_id=498086

#2 Bob W6PU

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Posted 02 May 2007 - 02:06 PM

It sounds like a put on! "All are F/12" I BELIEVE??" :lol: I'll have to watch this one PJ, just for laughs! :grin:

Bob
10" F/5, Coast Inst. Treckerscope,circa 1956

#3 Littlegreenman

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Posted 03 May 2007 - 11:38 PM

Well, one of my friends had the 100 and he says it was around an f/12. An 85 recently sold on eBay; if I remember right it could be an f/12. That one sold in the $800's range. My friend sold the 100 for something in the $2000 range. He says it was a very good achromat.

If I had an extra $3500....

Littlegreenman

#4 WRose

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Posted 04 May 2007 - 12:38 AM

It sounds like a put on! "All are F/12" I BELIEVE??" :lol: I'll have to watch this one PJ, just for laughs! :grin:

Bob
10" F/5, Coast Inst. Treckerscope,circa 1956



Hey Bob, Not a put on. I happen to know the seller. It's from his personnal collection. Stew is an aquaintance adn I do not have any vested interest in this (other than I'd love to own them.)
They are in great shape. They all have fixed extruded aluminum tripod and plate of the same vintage. The 100 is motorized with a second drive in the box.
Complete eyepiece sets (Pentax orthos (old style Pre-SMC but they work great). The 100 has a guide scope and steel pier that is a monster.
I remember "back in the day" many people considered this the best refractor you could buy. Correction is so good it's been compared with more current ED Designs.
He's got cases for each OTA & accessories. I think he's got manuals for at least one and the marketing materials for the set.

I suspect his concern is packing and shipping.

#5 Glassthrower

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Posted 04 May 2007 - 07:58 AM

Wow. What I wouldn't give for that 100mm driven Pentax with guidescope and pier!

Anyone need a kidney? I'll sell cheap!

Regards and clear skies,

MikeG

#6 Clive Gibbons

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Posted 04 May 2007 - 08:53 AM

It sounds like a put on! "All are F/12" I BELIEVE??" :lol: I'll have to watch this one PJ, just for laughs! :grin:

Bob
10" F/5, Coast Inst. Treckerscope,circa 1956



Hey Bob, Not a put on. I happen to know the seller. It's from his personnal collection. Stew is an aquaintance adn I do not have any vested interest in this (other than I'd love to own them.)



FWIW, I know Stewart, too.
He's definitely "for real". :ubetcha:

#7 davela

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Posted 06 May 2007 - 02:27 AM

I'm LittleGreenMan's former Pentax 100mm owning friend. It was a 100mm F12 and a very fine scope. Optically it was not nearly as good as a Vixen 100mm Fluorite however. I've seen some Vixen/Celestron Japanese-made 100mm F10 achro's that were better. The mechanical fit and finished of the Pentax and its mount were, however, superb. It was purely a 0.965" fittings design. I bought in about '94 or '95 for about 1200 and sold it in about '99 to a well-known German telescope dealer.

#8 Bob W6PU

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Posted 06 May 2007 - 10:14 PM

I never see that many Pentax, astronomy type refractors around, if they make objectives like their 10XW eyepieces, those refractors should really be superb! :grin:

Bob

#9 twhite

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Posted 09 May 2007 - 03:27 AM

I also own (and have offered for sale) a 100/1200 Pentax, and have owned several others (a 65/700 ED, the best small scope I ever owned, and the 85). They're quite good. I'd agree with Dave that the 100/1200 isn't as good as the 102FL he references (and I've owned three of those myself), but it is a very good achromat. And the mechanicals are really excellent.

And, BTW, it's purely a 38mm fittings design. It's just a question of what adapters/visual backs you have (a la Takahashi). I have one of the somewhat rare 38mm/31.7mm (that's 1.25") hybrid diagonals which makes that scope a whole lot more usable. :D


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