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#151 vahe

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Posted 04 September 2020 - 02:37 PM

 

 

     The Meniscas has a wonderful smooth precise internal focusing mechanism, and the backend can be configured very securely and flexibly for all sorts of visual and photographic purposes, using a range of M68 extenders and the CZJ quick change system. It'a a closed tube design requiring no maintenance in the form of collimation, mirror cleaning, re-coating etc. A very well constructed telescope indeed...

 

 

 

Not sure if this is a reliable test for Zeiss Mak 180/1800, but for whatever is worth here it is, you decide;

http://r2.astro-fore...niscas-180-1800

.

Vahe



#152 TerryWood

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Posted 04 September 2020 - 02:43 PM

Well, you gotta start somewhere. My Zeiss 8x56B Dialyt T* binoculars (West Germany). Love these things!

 

V/R

 

Terry

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#153 AllanDystrup

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Posted 04 September 2020 - 11:08 PM

Not sure if this is a reliable test for Zeiss Mak 180/1800, but for whatever is worth here it is, you decide;

http://r2.astro-fore...niscas-180-1800

.

Vahe

     
    Reliable, I would expect, for this specimen, with the caveat that collimation has been set correctly before test.

     

     But not representative: the Zeiss Mak series is known to have a range of quality in the mirror finish, with polish and strehl from close to perfect and to bad.

     
    They were produced in the period of transition from Zeiss Jena to Zeiss West, and different production techniques were applied to different scopes. It’s a long story... 

 

     — Allan


Edited by AllanDystrup, 04 September 2020 - 11:15 PM.


#154 Jim Curry

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Posted 07 September 2020 - 10:05 PM

Two more AS Zeiss builds getting under way.  Can you guess the sizes?

 

63 and 100 brass OTA.JPG


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#155 Derek Wong

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Posted 08 September 2020 - 12:34 AM

Derek, — beautiful restoration of the CZJ 3” A refractor! I love the focuser with graded scale, — Zeiss provided equivalent focuser scales also on the later APQ helical and the Meniscas scopes; Very useful for quickly zeroing in on the focus point when you’re often switching between visual and photographic (or other) backends.

 

     The mount above seems a bit lacking as a grab-go setup, as it does not seem easy to level, — and of course a motorized EQ mount (like the Zeiss Ib) would be preferable for modern applications.

 

     — Allan

Hi Allan:

 

Nice to hear from you.  The mount is super solid and weighs 25kg or so.  It doesn't need to be leveled for most sites.

 

Since the scope is close to 100 years old, it could be used on a modern mount but the alt az is very smooth for visual use.

 

Derek


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#156 Derek Wong

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Posted 08 September 2020 - 12:35 AM

Two more AS Zeiss builds getting under way.  Can you guess the sizes?

 

attachicon.gif63 and 100 brass OTA.JPG

I was going to guess 63/840 and 100/1000 (unsure of length), then I saw the photo title when I quoted you...you need to hide things a bit better lol.gif

 

Derek


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#157 Jim Curry

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Posted 08 September 2020 - 05:56 AM

Duh!undecided.gif



#158 ACG

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Posted 21 September 2020 - 10:18 AM

hello, my Zeiss collection is limited to:
APQ130/1000

Zeiss Telemator 63/840

Binoculars 20x60 IS

Four diagonals : Prisms m44 and  5.5 cm, two 130x100 mirrors, (Probably in the future I will put one of them up for sale) and a 5-position turret (4 of 0.96 ”and one m44 connection)

CZJ Orthos ( 40 m44, 25, 16, 12.5, 10, 8, 6, 4)

CZJ w31 m44 (70º)
Barlow x2  m44

SFO63, Lunar filters, filter wheel for CZJ, solar filter, filter for Mars, ... well, surely there is something else but I don't remember.  Only my other Lomo refractor can compare to the APQ vision and I think it surpasses it

I will post some photos later if I have time

 

Regards

ACG


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#159 Astrojensen

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Posted 21 September 2020 - 01:05 PM

That's not exactly what I'd call a "limited" collection... wink.gif  Especially since it contains such rare items as the W-31S and O-8 eyepieces. 

 

 

Clear skies!
Thomas, Denmark


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#160 Paul G

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Posted 21 September 2020 - 04:22 PM

hello, my Zeiss collection is limited to:
APQ130/1000

Zeiss Telemator 63/840

Binoculars 20x60 IS

Four diagonals : Prisms m44 and  5.5 cm, two 130x100 mirrors, (Probably in the future I will put one of them up for sale) and a 5-position turret (4 of 0.96 ”and one m44 connection)

CZJ Orthos ( 40 m44, 25, 16, 12.5, 10, 8, 6, 4)

CZJ w31 m44 (70º)
Barlow x2  m44

SFO63, Lunar filters, filter wheel for CZJ, solar filter, filter for Mars, ... well, surely there is something else but I don't remember.  Only my other Lomo refractor can compare to the APQ vision and I think it surpasses it

I will post some photos later if I have time

 

Regards

ACG

Drool...



#161 ACG

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Posted 21 September 2020 - 06:23 PM

Zeiss is a universe unto itself, that's why it is limited

#162 ACG

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Posted 21 September 2020 - 06:27 PM

If you saw the giant mirrors! They make the 3”
Explore Scientific small

#163 hudsonman

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Posted 21 September 2020 - 08:06 PM

Interesting Zeiss “bargain” here on ebay:

https://www.ebay.com...OUaAtMqEALw_wcB

#164 ACG

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Posted 22 September 2020 - 03:41 AM

There you have a few photos

 

Best Regards 

ACG

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#165 ACG

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Posted 22 September 2020 - 03:53 AM

And now the only one today that I find that overshadows the APQ, the Lomo 80/600

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#166 ACG

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Posted 22 September 2020 - 03:57 AM

More photos of the giant Zeiss mirrors

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#167 Corcaroli78

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Posted 22 September 2020 - 08:02 AM

More photos of the giant Zeiss mirrors

Amazing pictures !!  Is the Zeiss mirror diagonal part of an observatory telescope? I would be impressed if this was for "amateur" scopes.

 

(btw, interesting to find a book of Fondo de Cultura Economica FCE in your pics :-) ) 

 

Carlos



#168 stevenwav

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Posted 22 September 2020 - 08:18 AM

I am physically injured by looking at these pics! Just a fantastic collection - thanks for sharing!



#169 ACG

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Posted 22 September 2020 - 10:53 AM

Later I will put more, I have another collection of filters which are worth mentioning.  The giant Zeiss diagonal will be used on my C14.  I already did it before with another smaller prism (7 cm) that I had with surprising results in the image.  Any Zeiss prism turns a SC into a true apo refractor.

 

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#170 ACG

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Posted 22 September 2020 - 11:14 AM

Some more

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#171 ACG

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Posted 22 September 2020 - 11:19 AM

👋🏻

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#172 Marcus Roman

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Posted 23 September 2020 - 04:22 PM

Marsglas and CZJ O-10 ready for Mars (when it is not raining like today!)

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Edited by Marcus Roman, 23 September 2020 - 04:24 PM.

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#173 Bowlerhat

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Posted 23 September 2020 - 05:53 PM

hello, my Zeiss collection is limited to:
APQ130/1000

Zeiss Telemator 63/840

Binoculars 20x60 IS

Four diagonals : Prisms m44 and  5.5 cm, two 130x100 mirrors, (Probably in the future I will put one of them up for sale) and a 5-position turret (4 of 0.96 ”and one m44 connection)

CZJ Orthos ( 40 m44, 25, 16, 12.5, 10, 8, 6, 4)

CZJ w31 m44 (70º)
Barlow x2  m44

SFO63, Lunar filters, filter wheel for CZJ, solar filter, filter for Mars, ... well, surely there is something else but I don't remember.  Only my other Lomo refractor can compare to the APQ vision and I think it surpasses it

I will post some photos later if I have time

 

Regards

ACG

Beautiful collection!



#174 TopQ

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Posted 23 September 2020 - 07:02 PM

I don't have a lot of Zeiss equipment, just a telementor with several huygens plus a very rare observatory grade 4" Zeiss eyepiece (100 mm 80deg)

First picture show it with a 17 Ethos for scale comparison.

The second pictures with a 1.25" 32 mm plossl, 2" 17 mm Ethos, 2" 30 mm Leitz and the 4" 100 mm Zeiss. Interestingly the exterior body design is very similar to the Leitz.

The last pictures show the eyepiece with a 6" TEC refractor at a star party. The TEC had a 4" focuser but no 4" diagonal so we had to use it Japanese style (straight through)

Still looking for a large 4" diagonal to make the whole thing pop.

 

Bruno 

 

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#175 Marcus Roman

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Posted 24 September 2020 - 01:52 AM

I don't have a lot of Zeiss equipment, just a telementor with several huygens plus a very rare observatory grade 4" Zeiss eyepiece (100 mm 80deg)

First picture show it with a 17 Ethos for scale comparison.

The second pictures with a 1.25" 32 mm plossl, 2" 17 mm Ethos, 2" 30 mm Leitz and the 4" 100 mm Zeiss. Interestingly the exterior body design is very similar to the Leitz.

The last pictures show the eyepiece with a 6" TEC refractor at a star party. The TEC had a 4" focuser but no 4" diagonal so we had to use it Japanese style (straight through)

Still looking for a large 4" diagonal to make the whole thing pop.

 

Bruno 

That's wonderful!!!!!




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