25 replies to this topic

[Wisconsin Steve]

Wow! Just got back from an amazing trip to Amsterdam and had the incredible good fortune to meet up with Harald Haverkorn and see his awesome 1920 Zeiss. Had a wonderful visit with Harald and he helped to make sure that mine and my wife's trip was a memorable one. I told him I would post these pictures when I returned home. If anyone ever has a chance to see an old refractor this big and in person, it is really something.

Steve

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[Wisconsin Steve]

Harald (on the left) sharing some of the details with me as to how he acquired this scope.

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[Wisconsin Steve]

Focuser

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[Wisconsin Steve]

badge

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[Wisconsin Steve]

Last one for fun.

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[greju]

WOW! An experience to last a lifetime!!

[Scott in NC]

Wow--very nice!!! Do you have any more details to share about the scope (aperture, f/ratio, etc.)?

[Scott in NC]

Do you have any more details to share about the scope (aperture, f/ratio, etc.)?

Okay, never mind. If I had taken the time to read the post title more carefully, I'd have already known it was 130mm. It looks around f/15 to me--am I close?

[Steve_M_M]

Amazing! What a great trip...and a visit to Harald makes it all the more special. John Mutch has a 130 f15 for sale on Astormart. The price has come down for what I thought was very reasonable to now basically giveaway...for a Zeiss anyway

Zeiss 130mm E lens Someone needs to buy this one before myself, Dan, PJ, or others buys another scope we dont need.

[Dan /schechter]

Thanks for posting these pictures Steve. It sure is big. Was the telescope set up when you arrived or did you help Harald set it up. Please share what you know about how he acquired it.

Thanks for sharing,
Dan

[Wisconsin Steve]

Your welcome. The telescope was set up when my wife and I arrived at the town he was at (about 1 hour outside of Amsterdam). He set it up by himself, which is very difficult. I helped him take it down and put it away after we looked at it. The box for the OTA with the scope in it I do not believe one person could move alone. Harald traded for this scope with another person; but I do not recall the exact details. Harald is a member here, so I will send him a link to this thread as he may want to provide some additional details for you all. Here is one more shot from a little more distance.

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[Dan /schechter]

HI again Steve,
I have seen a few pictures of Harold`s telescope collection. Does he keep his scopes at his house or in another location? Did you get a chance to see it. I`m sure it looks much more impressive in person than in the pictures and his collection looks fabulous in the pictures.
Dan

[Wisconsin Steve]

Hi Dan -
We were only able to see 2 of his collection with all the other activities we had planned. My wife has relatives in Amsterdam so we spent time with them, and also spent 3 days at an island on the West coast as well. The size of these big refractors is really something you have to see (and touch) in person to get the full impact. I'm not sure where Harald normally stores his scopes. I did send him and email, and hopefully he will chime in on this thread.

[Napersky]

My 1920 110mm Zeiss

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[Napersky]

Last

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[astrodon]

Whoa, cool Zeiss refractors. I remember I bought a lunar atlas and some misc lunar media from Harald. Pretty neat to see you and him with the 130 Zeiss.

[trotts1]

Hi All,
I am researching the Lens and telescope numbers of Zeiss between 1897 and 1950. From the telescope number (Nr 7744) and the lens number (Nr 8030), this telescope was made about 1915. It appears to be about f/18 and so would be an "A" type semi-apochromat. However Dan S states it is an "E" type which is a two lens Franhofer type usually of between f/10 and f/15. Additionally, Herr Jurgen Kost had an article on this telescope in Astromat.de some time ago and stated it was an "E" of focal length 239cm, an f/18.4 , quite an unusual focal ratio for an "E" lens.
The telescope as pictured has had it's original steel field tripod replaced with the present wooden one and has also lost it's vertical fine motion drive. The wooden tripod has also lost its cast adjusting feet.
A very fine and handsome telescope. It should be noted that these changes occurred prior to the photo that was included in Herr Kost's article.

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[trotts1]

Hello Napersky,

The 110 you show in your photos has tube number 11104 but the first 1 is not visible in the photo. It dates from 1924/5. If this is the correct number, it should have a lens number of 14000 to about 14600. With a number in this range, it could have an early AS lens.If not, then an "E" or "B" Could you provide a photo of the lens showing the inscription with the lens type and focal length.

[Ken Launie]

The wooden pyramid stand looks original to me, not a replacement. For one, it LOOKS like typical wooden Zeiss stands with the classic crossbracing, plus Zeiss offered those as original equipment in catalogs such as Astro 30 for up to 130mm scopes.
Regards,
--Ken

[Napersky]

Trotts,

I don't have another photo or camera available.
The lens is 12923 E f=165cm.

Mark

[Dan /schechter]

Hi Ken,
I agree that wooden pyramid stand was made by Zeiss. However, it may not be original to the mount. Take a close look where the metal base contacts the wood. Usually the metal base is the same or slightly less than the diameter of the wood. In this case, it greatly overlaps the wooden pyramid stand. My quess is that stand came from another Zeiss telescope. In my opinion this telescope would require a larger stand, either steel or wood.
Dan

[Napersky]

Dan or Trotts1,

Do either of you have a link to a site that has the telescope production numbers by year. I remember seeing it but can't find it.

Mark

[Dan /schechter]

Hi Mark,
There is no site that I am aware of. Please remember it and let me know. The dates that Trotts1 is referring to come from his research.
Thanks,
Dan

[Napersky]

Dan,

I had found a place and didn't bookmark it with serial numbers...darn!!!

[teimant]

Hi trotts1,

here my Asaliter, 130 mm Zeiss terrestrial observation refractor:

http://www.cloudynig...67/Main/4375977

Objective E type SN 7357, and SN 9064 is printed on the big prism box. Can you help me to define better fabbrication date ?
Thank you and best regards, Antonio.