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MK66/67 no more???

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#1 DIO

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Posted 20 October 2005 - 01:19 PM

Hello all,

I was checking the ITE website and noticed that the MK66 or 67 are not listed any more ...

Does anyone know if they have stopped being produced? :bawling:

Thank you,
Dimitri

#2 bierbelly

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Posted 20 October 2005 - 02:54 PM

Yes, it is my understanding that Intes went out of business. Intes Micro is still producing.

#3 Mark Costello

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Posted 20 October 2005 - 05:25 PM

There's a company called Santel - that's supposed to have been formed by some of the Intes people - making a 6 " MCT called the MK6. I'm wondering if this is the MK66 under a new name? Stellar Optical (has a link on the CN Main Page) sells them. Sometime way down the line I'll be wanting to get a CAT to go along with my RAT (Refractor Astronomical Telescope) and this is one of the candidates.

Hope that helps.

#4 jrcrilly

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Posted 20 October 2005 - 05:41 PM

Yes, it is my understanding that Intes went out of business. Intes Micro is still producing.


Wow - we are running out of producers of Mak-Cassegrains. Meade is ceasing production of their 7" Mak after the November run.

#5 wilash

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Posted 20 October 2005 - 06:38 PM

Yes, it is my understanding that Intes went out of business. Intes Micro is still producing.


Wow - we are running out of producers of Mak-Cassegrains. Meade is ceasing production of their 7" Mak after the November run.


There is always the Chinese.

#6 bierbelly

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Posted 20 October 2005 - 08:11 PM

Yes, it is my understanding that Intes went out of business. Intes Micro is still producing.


Wow - we are running out of producers of Mak-Cassegrains. Meade is ceasing production of their 7" Mak after the November run.


There is always the Chinese.


Yeah, isn't that where Orion is getting theirs now?

#7 DIO

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Posted 21 October 2005 - 07:00 AM

Thanks for the info guys ... my only regret is that Intes was making Rumak design Maks - which according to Rutten & Van Venrooij produce a far superior image compared to the more traditional Gregorian design (what all the Orions are now). So, it that sense, we are getting poorer in choices ...
I did a google search for Rumak, and Lomo popped up. By looking at pictures of the Lomos though, they look more like Gregorians rather than Rumaks. So I sent an e-mail to ask them and I am waiting for the answer.

Cheers,
Dimitri

#8 bierbelly

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Posted 21 October 2005 - 07:06 AM

Dio, you can usually pick up a used MK66 or MK67 on AM fairly inexpensively. I did.

#9 DIO

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Posted 21 October 2005 - 07:06 AM

Mark,

Many thanks for the point, you made my day brighter! By looking at the Santel scopes, they should be Rumaks!

Thanks again,
Dimitri

#10 DIO

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Posted 21 October 2005 - 07:10 AM

Thanks BierBelly ...

I Just bought a scope, so the budjet is closed for the next 12 months ... I don't know if I will be lucky in the future, but Mark's observation shows that the the Santel scopes are probably descendants of the MK66/67.

Dimitri

#11 RonS

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Posted 21 October 2005 - 10:35 AM

Why are the more premium maks being discontinued? Are the chinese ones good enough that sales are down?

#12 Andrew in VA

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Posted 22 October 2005 - 05:03 PM

Hi Dimitri,
I think the Santel MK6 is the same telescope as the MK67, probably made by some of the same people.

Ron,
Even though Intes is gone, there are now three Russian companies producing Rumaks. I think the choices and quality are better than ever. The Chinese aren't competing in this area.

#13 Gaz O'C

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Posted 23 October 2005 - 06:20 AM

Are the Orions and Skywatchers Gregorians? I hav n't be able to find much info on this.

#14 RonS

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Posted 23 October 2005 - 09:26 PM

Ron,
Even though Intes is gone, there are now three Russian companies producing Rumaks. I think the choices and quality are better than ever. The Chinese aren't competing in this area


OK, good, we don't want these to be no more!

What is the difference and how can you guys tell by looking? (between Gregorian and Rumak)

#15 Andrew in VA

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Posted 23 October 2005 - 11:30 PM

For the best explanation, see:

http://www.seeviewo..../telescopes.htm
and
http://observers.org...r/glossary.html

Basically, the Rumak has a separate secondary mirror holder and the Mak-Gregory (not Gregorian) has a silvered spot in the center of the meniscus. The meniscus lens on a Gregorian Mak is reversed from the Maks produced these days.

#16 RonS

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Posted 24 October 2005 - 08:52 PM

Thanks for the info. :)

This helped, thanks,

Gregory Maksutov

Any one of several Cassegrain configuration Maksutov designs by John Gregory. These all feature a secondary mirror which is merely an aluminized spot on one surface of the Maksutov corrector.
It is common to confuse Gregory Maksutovs with Gregorians: They are not the same.


I can't find an actual definition of Rumak, the first page you linked showed both having a silvered spot, but one having baffles on both the primary and secondary. But they also mentioned that Gregory Maks have a Parabolic primary. Do Rumaks have a spherical then?

Ron

#17 Adolfojose

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Posted 24 October 2005 - 09:10 PM

Intes Micro & Santel Mak Cass are bein offered here:

http://www.stellaroptical.com/cass.htm

#18 tegea

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Posted 27 October 2005 - 06:44 AM

Hello,

Concerning the difference between Rumak and Gregory design, the Rumak design is better. It has a true secondary mirror and not a aluminium spot inside the meniscus. This allows for the secondary to have a different curvature than the meniscus. As a result, the focal plane is really plane ! On the Gregory design, it is curved. That's why the spot diagram of the Rumak is so uniform on all the field of view.

OK, Intes stopped production, but there are other excellent Rumak maksutovs.
- Intes-micro build Rumak. They build F/10 and F/15-low obstruction versions. The M603 is a F/10 6" rumak that is clearly as good as the MK66.
- STF builds a 7" and a 8" Rumak. STF was created by people from Intes (the chief optician of Intes is now working in STF). That's why their Mirage 7 and Mirage 8 are exact scaled up models of the Intes MK66. Optics are excellent.
- I did'nt know Santel ! But is is great news that they continue to build an MK66 like scope, because this was a great scope (I've got one ;-) )

Tegea

#19 John P

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Posted 27 October 2005 - 09:01 AM

Santel is also making the MK91...9". I have one and it is excellent.

#20 John P

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Posted 27 October 2005 - 09:01 AM

Santel is also making the MK91...9". I have one and it is excellent.

#21 John P

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Posted 27 October 2005 - 09:01 AM

Santel is also making the MK91...9". I have one and it is excellent.

#22 tegea

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Posted 27 October 2005 - 09:12 AM

How would you tell it is compared with a C9.25 ?

#23 John P

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Posted 27 October 2005 - 09:27 AM

While I hear great things about the 9.25, I have never made a direct comparison. The MK91 has been tested against the C11 and the review is on Makscopes. They were fairly equal while the MK91 had better contrast. I've owned 3 SCT's including 2-11" and while they were very convenient and a joy to use, the MK91 is better than either one. The MK91 is not the easiest telescope to use and I miss the moving mirror focusing of the SCT...much greater focusing range and no need to use extension tubes. I also really enjoyed my Nexstar 11 and the ease of locating targets. I might get a new Celestron 9.25" CPC just for that reason. The Russian Maksutov-Cassegrain is optically superior (my opinion) and I understand the Maksutov-Newtonian even better.

#24 darylf96

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Posted 28 October 2005 - 12:51 AM

You can always call Mike Palermiti at ITE. He's a great fellow and has the inside scoop on all these Russian scopes.
The Russian cats really are superior. I especially like the lower focal ratios and some use the SCT visual backs, which is handy.

#25 darylf96

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Posted 28 October 2005 - 01:02 AM

The Santel appears to be a fine instrument. A 6 inch of this quality for just over $1000 is a true bargain. It would be very close to owning a 6 inch corrected refractor at many times less the price. And it would be much easier to use.


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