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TEC APO250VT is Now Listed on The Tec Website

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#26 Psion

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Posted 22 April 2014 - 12:35 AM

Very nice telescope, but better is a Dialytic refractor with twice triplet correctors - price and weight will be 4 times lower and optical parameters will be similar.

#27 Derek Wong

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Posted 22 April 2014 - 01:02 AM

I would assume from other TEC scopes I have owned that the lens is threaded to the tube, but not in a user-friendly, do it all the time fashion.


I agree. The 20 pound 8" TEC lens is a pain to thread correctly, even though its weight is not an issue. The threads slip and it takes some trial and error. Threading a bigger, heavier, super expensive lens over and over again would be a nerve-wracking exercise.

Lifting the 69# tube high onto the mount isn't easy either. If the counterweight is there, it will be less fun.

Derek

#28 Samir Kharusi

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Posted 22 April 2014 - 09:02 AM

OK, I am a C14 kind of guy, and even on that the eyepiece swings through a very large arc. On the practical side, isn't such a long OTA going to be rather awkward to look through as you change alt? For such a large, unwieldy beast, it certainly seems like it would be more at home in an observatory, e.g. on an AP3600, with a step ladder nearby... But it sure is bound to be the talk of the field at a star party! Nevertheless I do not see the price as horrendous compared to other toys for not-yet-grown-up boys, Mercedes S-class cars have been mentioned, and what about yachts? The latter get used, what, a handful of times a year? OK, one can take the spouse along to soothe her. As if! As for depreciation, well, is there anything depreciating faster than yachts? Private jets perhaps? No, I suspect that the main thing holding up many APO lovers is that many in this hobby tend to be both grown up and reasonably wise. $50k kept aside for a grandkid's education is often seen as a more sensible choice. Perhaps age just makes us splurge less and less on our personal whims. How sad. As the poem says, "My get up and go has got up and went"! And we blame our loving spouses for it? Unfair!

#29 Peter Natscher

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Posted 22 April 2014 - 09:23 AM

Perhaps, the lens cell should be attachable in a way other than threaded. Bayonet mount with hex allen screws?

I would assume from other TEC scopes I have owned that the lens is threaded to the tube, but not in a user-friendly, do it all the time fashion.


that's too bad from a portability standpoint. If that is the case for the 250, I would imagine spinning a 31+ pound lens cell onto a mounted, receiving OTA would be difficult.

If there was a choice though, having a setup like the astro-physics lens cells ( I think its three allen keys fastening it to the OTA ) would be nice.



#30 Paul G

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Posted 22 April 2014 - 09:31 AM

Doesn't even need to be a yacht. Our plumber has a boat that costs more than this scope and a mount would cost, so does our electrician.

#31 kcolter

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Posted 22 April 2014 - 09:56 AM

Anybody know what the VT stands for? (Don't tell me ventricular tachycardia....)

#32 Catapoman

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Posted 22 April 2014 - 10:16 AM

Perhaps it's the initials of the lens designer. V. Terebizh is listed on all the optical reports on the TEC website for that scope.

#33 Kent10

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Posted 22 April 2014 - 11:47 AM

Yes, from Yuri:

"VT stands for Valery Terebizh ( Doctor of Science, Crimea, Russia).
Regards, Yuri"

#34 Danny206

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Posted 22 April 2014 - 12:03 PM

ok,

I just chatted with Yuri on the phone. The TEC 250 will have a detachable lens cell ( three screws ). It will not be like the screw in type like in the smaller tecs because of the size and weight of the cell ( about a total of 40 pounds with lens )

This imo makes the setup more possible for one person.

#35 John Anthony

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Posted 22 April 2014 - 12:23 PM

Lets see..... words like "forty nine thousand" "don't even think about it" and "divorce" pretty much describe my experience with this type of product, along with the occasional something might get cut off statement. :grin:
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#36 Edd Weninger

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Posted 22 April 2014 - 01:24 PM

Realistically:

No one is going to use this scope except on a permanent mounting

It will be in an observatory

There are various solutions to the wide excursion of the eyepiece if used for visual

There are various solutions for thermal control

No one on this thread is going to buy one

Cheers,

#37 Scott99

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Posted 22 April 2014 - 02:29 PM

Beautiful scope! APM ships scopes this size and bigger to people with observatories, if you can pay people will come and install it into your observatory, no problem.

hopefully someone out there will either bring one to a star party or invite us over!

#38 t.r.

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Posted 22 April 2014 - 02:33 PM

Realistically:

No one is going to use this scope except on a permanent mounting

It will be in an observatory

There are various solutions to the wide excursion of the eyepiece if used for visual

There are various solutions for thermal control

No one on this thread is going to buy one

Cheers,


:lol: I was actually suprised how long the AP 180 F/7 thread has ran, folks just babbling on about it...! :p

IMHO, I think Yuri missed the mark with this one. He wanted to bring out something to mark TEC's 25th and while I get the 25cm, its price puts it waaaaaaay out of the affluent amatuers ability and puts it closer to the institutions realm. I would have been the first to place an order for a 200mm offering, still portable and half the cost, fluorite if available or FPL-Whatever and stretch the FL to balance color. Wrong economy, wrong time, wrong target group...bet he doesn't sell 10.

#39 Paul G

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Posted 22 April 2014 - 02:38 PM

Anybody know what the VT stands for? (Don't tell me ventricular tachycardia....)


Well played!

#40 Kent10

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Posted 22 April 2014 - 02:39 PM

Yuri says so far the following states are buying the 250. Anyone here? :)

"And for the moment we have covered with APO250VT the following states:
FL, CA, NM, SK, EU"

SK--Is that Saskatchewan, Canada??

#41 ManuelJ

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Posted 22 April 2014 - 02:41 PM

Why do you want a TEC 250 if you have no eyes!!!. Poor man :(

http://www.telescope...250vt_pic10.jpg

#42 JustaBoy

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Posted 22 April 2014 - 02:47 PM

See! - Look at that pic very closely and you will see that it is mounted on a quite portable little mount - So it's Not just for use in an observatory. - I figure 800lbs tops!

Looks to be almost Grab and Go!

#43 JJK

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Posted 22 April 2014 - 11:20 PM

Lets see..... words like "forty nine thousand" "don't even think about it" and "divorce" pretty much describe my experience with this type of product, along with the occasional something might get cut off statement. :grin:


A famous golfer once allegedly said

"I asked my wife what she wanted for Christmas

"She said 'A divorce!'

"He replied 'I was thinking of something a bit less expensive' ".

#44 jrbarnett

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Posted 22 April 2014 - 11:38 PM

Under no circumstances is a 100#+, long OTA like this one a "one man setup". This is definitely an observatory instrument.

- Jim

#45 jrbarnett

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Posted 22 April 2014 - 11:47 PM

I agree that $49k is cheap for a 10" premium triplet.

A similar aperture APM/LZOS costs more. (~$68k)

- Jim

#46 BillP

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Posted 23 April 2014 - 07:33 AM

Too funny...on the TEC Groups someone posted that when all said and done (mount and observatory), this new scope will probably top $100k and while he dearly wants one, he will probably go for the Porsche instead. Yuri responds back that the TEC APO250V will outperform the Porsche on the Moon and planets :lol:
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#47 Jeff B

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Posted 23 April 2014 - 07:57 AM

$49k (scope) + $12K (mount) + $10K (observatory)= $71K, $75K tops. That leaves $25K-29 for the wife's Miata.

#48 t.r.

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Posted 23 April 2014 - 09:26 AM

Bah...a visual user could get by with the AP1100 on a portable pier and setup each time in backyard fashion...$60k would do it. No one thinks outside the box here, it is always "Got to load it to the max with every option"!?!? "Gotta get the El' Capitan, lay a cement foundation and build a fully automized dome facility"! :smirk: Me, I'd put just a permanant pier in the backyard and carry out the mount and scope to setup each time...Hey, that 60k now looks doable! :grin:

#49 edif300

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Posted 23 April 2014 - 09:28 AM

LZOS costs more and seems to be reasons for that. Eg.:

LZOS 254/9
TEC 250/8.2

#50 Full Sun

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Posted 23 April 2014 - 09:34 AM

Too funny...on the TEC Groups someone posted that when all said and done (mount and observatory), this new scope will probably top $100k and while he dearly wants one, he will probably go for the Porsche instead. Yuri responds back that the TEC APO250V will outperform the Porsche on the Moon and planets :lol:

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Yuri does have a mischievous sense of humor and I had a nice chuckle over it. However, the comment taken at face value, I would prefer the Porsche for terrestrial.






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