What b&l model is this?

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Scarodactyl
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Joined: Sat Mar 03, 2018 9:09 pm

What b&l model is this?

#1 Post by Scarodactyl » Mon Jun 15, 2020 8:22 pm

I've seen these around, and even bought one--it's misaligned but beautiful so it sits on my mantel.
Image
It's a simple 160mm setup, and it came with Zeiss objectives and eyepieces on it which worked nicely (Aside from the misalignment).

BramHuntingNematodes
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Re: What b&l model is this?

#2 Post by BramHuntingNematodes » Mon Jun 15, 2020 8:24 pm

Why, it's a series T Dynoptic. I know a little about that scope.
1942 Bausch and Lomb Series T Dynoptic, Custom Illumination

Scarodactyl
Posts: 1227
Joined: Sat Mar 03, 2018 9:09 pm

Re: What b&l model is this?

#3 Post by Scarodactyl » Mon Jun 15, 2020 8:27 pm

I thought it was probably a dyn-something, but it is hard to tell.
Darn shame mine is misaligned. I'm not sure how I'd go about opening it up, and maybe someday I will but for now I'm happy with it as a display piece.

BramHuntingNematodes
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Re: What b&l model is this?

#4 Post by BramHuntingNematodes » Mon Jun 15, 2020 8:36 pm

I have done it before. It was pretty straightforward, and the binocular optics all came out through the top. I don't remember how the alignment was performed, but I have just aligned a badly misaligned Dynazoom from about 15 years after this one and it was simplicity itself. There were three spring-loaded star-drive screws for each eye, and you could adjust them bit by bit until the two images matched. It took about 20 minutes.
1942 Bausch and Lomb Series T Dynoptic, Custom Illumination

BramHuntingNematodes
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Re: What b&l model is this?

#5 Post by BramHuntingNematodes » Mon Jun 15, 2020 8:47 pm

Scarodactyl wrote:
Mon Jun 15, 2020 8:27 pm
I'm happy with it as a display piece.
I have also heard it described as a "pigeon-breasted" Dynoptic, which I think is perfect.
1942 Bausch and Lomb Series T Dynoptic, Custom Illumination

perrywespa
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Location: Georgia

Re: What b&l model is this?

#6 Post by perrywespa » Mon Jun 15, 2020 9:39 pm

I just got one of these given to me! It's missing objectives and the mirror but I'm looking forward to trying to put into service. Beautiful instrument.
Perry
Olympus CH-2Seiler Westlab II, B&L Dynoptic, Vintage Leitz.

BramHuntingNematodes
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Location: Georgia, USA

Re: What b&l model is this?

#7 Post by BramHuntingNematodes » Mon Jun 15, 2020 10:01 pm

My advice would be that if you ever see a 20x Apochromat for it snap it up and then get some compens eyepieces it's the sharpest I've ever seen.
1942 Bausch and Lomb Series T Dynoptic, Custom Illumination

Element 56
Posts: 322
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Location: Lancaster County, PA

Re: What b&l model is this?

#8 Post by Element 56 » Thu Jun 18, 2020 3:22 pm

When you say misaligned are you referring to the binocular collimation? If so this article may be helpful.

https://www.scribd.com/doc/126976427/A- ... ollimation


Best Regards,
KIrby

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Radazz
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Location: Arnold, Missouri USA

Re: What b&l model is this?

#9 Post by Radazz » Wed Jul 08, 2020 12:11 pm

I have several of these in my collection.
One of them has gotten condensation in that splitter chamber.
When this happens, it becomes the perfect environment for mold.
That one has green between the elements of the bottom prism.
The 16033 stand introduced in the 1950s are the best IMHO.
Radazz
Arnold, Missouri
Olympus IX70
Olympus BX40
Olympus SZ40

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Radazz
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Re: What b&l model is this?

#10 Post by Radazz » Thu Jul 09, 2020 2:48 am

Now that you mention it, one was out of alignment (cross-eyed).
I opened the top, and it was obvious how the one prism had moved in the mount.
Easy fix. Changing the bottom prism is a bear, though.
Radazz
Arnold, Missouri
Olympus IX70
Olympus BX40
Olympus SZ40

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