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Binocular id

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Old Wednesday 16th August 2017, 08:01   #1
Bryon Wright
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Binocular id

Hi can any expert date a pair of Hertel and Reuss, 8x50, binoculars?
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Old Thursday 17th August 2017, 13:09   #2
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Hi, enclose image of this helps.
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Old Thursday 17th August 2017, 13:38   #3
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Hi Bryon.
1950s?
Are the lenses coated?
If so what colour?
Photo of back plates and eyepieces would help.
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Old Friday 18th August 2017, 08:52   #4
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Hi Binastro, enclose a barely readable logo. The other mantle is marked stadglas like a lot of them are. Used a scope by these makers early on never even considered they could have made bins. They are like Wray and others optically. The lenses appear completely uncoated but they have that precision bloom some old lenses seem to have! Might be easily dismantled and cleaned, there is barely any prism residue or fungal growth.
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Old Friday 18th August 2017, 10:44   #5
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logo = Hertel&Reuss - Optik - Kassel
If you post more photos (from all sides) I could probably tell you more.
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Old Monday 21st August 2017, 10:23   #6
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Binocular id.

Hi M,
enclose further photos to aid id. Actually it reads jagdglas not stadglas, 8x50. The eyecups are really aged plastic, not bakelite as I originally thought. The body has been worn smooth by much handling.
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Old Monday 21st August 2017, 10:26   #7
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Hi all, wonder if it was a knurled wheel missing on the focussing which still works or just a leatherette covering.
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Old Sunday 27th August 2017, 17:26   #8
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I know that there also was a Hertel & Reuss Jagdglas 15x56 in this series but I can't date these too, sorry. Probably Dr. Hans T. Seeger from Hamburg could tell you more - he's an expert regarding vintage German binoculars and wrote several books.
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Old Tuesday 29th August 2017, 13:21   #9
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Thanks for your help MF.
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Old Sunday 3rd September 2017, 13:44   #10
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Binocular id.

Hi all,
yet another pair of West German? 8x30 I know very little about! Hitschke, Rathenow, Genira.
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Old Sunday 3rd September 2017, 14:02   #11
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Emil Busch were in Rathenow.
They made some of the very large survey cameras also known as Zeiss survey cameras. 30cm square format with 20ccm Topogon, 50cm Tessar and 75cm Telikon lenses, all very high quality.

They also made lenses I think.

There were other optical firms in Rathenow, but I haven't heard of this binocular.

P.S.
See Rare Carl Zeiss manufactured Nitschke Rathenow Genira 8x30 Binoculars. £30.
Not sure how accurate this is, but look up Nitschke.

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Old Sunday 3rd September 2017, 16:08   #12
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Binocular id.

Thanks Binastro will check your information, out.
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Old Monday 4th September 2017, 03:48   #13
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I can see see the first letter of the marking looks like H but it is actually an N, the name of the manufacturer being Nitsche & Günther, Optische Werke, Rathenow. During WW II the company was given an optical manufacturer's 3 letter coding but I'm not sure if they made any binoculars (if so would have been only a small number of 6x30 Dienstglas) during the war in addition to other optical instruments or lenses. According to a translation of German Wikipedia:

"By law, Emil Busch AG was officially expropriated in Rathenow after the end of the Second World War. The second largest optical operation in Rathenow, Nitsche & Günther, was also expropriated in November 1945. In March 1946, Rathenower optische Werke mbH was created from Nitsche & Günther."
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Old Tuesday 5th September 2017, 12:12   #14
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Thanks LPT for your complete information. What highly cursive calligraphy they used in those times. This pair have that particularly obnoxious, etched on glass type, of fungus on the prisms. They also seem to momentarily, fog brown, nicotine cloud internally, very strange!

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Old Tuesday 5th September 2017, 13:52   #15
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Brown fog.
Perhaps grease volatilising?
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Old Sunday 10th September 2017, 12:14   #16
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Thanks for that Binastro, it has not been back! Not for the faint hearted but this is how I got both pairs partially useable but not absolutely perfect. I did not want to dismantle and clean the prisms because the collimation was good and I personally do not have the expertise to realign their optical paths. I partially dismantled and removed the top plates without disturbing the prisms. The fungus was filamentous not etched as I originally feared. I filled the binocular up with very cheap supermarket coca cola and left them to soak. This can be repeated if desired. I then finished off the rinse with distilled boiled water and a tinge of very mild washing up liquid! I then put the glasses in a low heat oven, wrapped in an oven glove, for twenty minutes. Obviously keep an eye on them and do not over cook. This made a visible difference and might work with mould the same as it does with fungus infested prisms.There is always a residue left over with this method but when I gain the confidence to dismantle I will find out if the fungus leaves a permanent archeopteryx like latent image on the prism surface. I finished off by putting the binoculars overnight underneath a low energy bulb to really reduce the internal humidity. This is a last resort method for porro prisms infested with fungus, mould or mangrove mud and only my trusty Leica binoculars are impervious to the rainforest humidity. Appreciate Leica will not be offering me a technician's job.

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Old Sunday 10th September 2017, 17:58   #17
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Hi Byron.
Was it sugar free Cola or perhaps low sugar cola?
How did it taste after your procedure?

Would it work for toe nails also? (:

I bought 2 Minolta SLRs and on receipt I noticed creatures moving inside the viewfinder.
They walked in endless circles around the Fresnel screens.
I think 6 or 8 legs, They were small but active.
One camera had the rare Minolta 250mm f/5.6 mirror lens.

I placed the whole lot in the freezer at minus 18C for about 3 days. took them out for a day or so.
I repeated this 3 times.
But I still couldn't face keeping them, in case the creatures were just sleeping and might reproduce and infect everything.

So I gave the whole lot to a friend.

I should have kept the mirror lens as it now goes for about £700.

I have never bought anything again from this shop, as his warehousing is probably sub standard.

In minus 30C in the boot of my car a fisheye lens converter cracked as the front retaining ring shrank. It was an excellent device.
But I never had a Minolta lens break even colder although the plastic case and strap were very brittle and could have crumbled.
That is why Russian straps and cases are usually leather.

Kodak negative film broke hopelessly. Konica film worked fine.

I have done many stupid things in my life.
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Old Sunday 10th September 2017, 19:48   #18
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Quote:
Originally Posted by Binastro View Post

I have done many stupid things in my life.
I bet I can meet and raise your total, Binastro!
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Old Sunday 10th September 2017, 20:06   #19
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Sancho.

Thank goodness for that.

I sometimes look back and think 'Why on earth did I do that?'
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Old Monday 11th September 2017, 13:40   #20
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Hi all,
used low calorie coke to internally purge the binoculars.
One pair still have some fungus as after images on the prisms mainly in one barrel. The other pair have some water marks remaining from my unorthodox treatment. Still I am amazed at the quality of the 8x30 after this treatment. The dioptre eyepiece on the 8x30 just revolves pointlessly and does not engage. It seems to have stuck on a setting suitable for my eyesight.
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Old Monday 11th September 2017, 14:19   #21
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Low calorie coke sounds best.

One doesn't want the binocular to put on weight.
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Old Friday 13th October 2017, 11:02   #22
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Hi all,
just an update on my partially, tongue in cheek posting. This technique cleared away the mould. For the perfectionist, the watermarks still diffuse the light and flatten the quality of the image.This technique is certainly not perfect. Also these watermarks are probably likely to serve as miniature petri dishes for future mould regrowth.
If I did it again I would probably substitute white vinegar for the low calorie coke. This is certainly a last resort method only.
Also if you have felt or fibre sealings mostly on older models this method needs to be done with care. Some sealings will not tolerate multiple washings. For my part I have a box of mouldy optics that have been in the rainforest!
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Old Monday 1st January 2018, 14:00   #23
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revolving dioptre

Quote:
Originally Posted by Bryon Wright View Post
Hi all,
used low calorie coke to internally purge the binoculars.
One pair still have some fungus as after images on the prisms mainly in one barrel. The other pair have some water marks remaining from my unorthodox treatment. Still I am amazed at the quality of the 8x30 after this treatment. The dioptre eyepiece on the 8x30 just revolves pointlessly and does not engage. It seems to have stuck on a setting suitable for my eyesight.
If you unscrew the top, probably Bakelite, eyecup you will likely find three small grub screws which secure the dioptre to the lenses.
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Old Tuesday 2nd January 2018, 16:00   #24
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I bet I can meet and raise your total, Binastro!
Amateurs—both of ya. You can get into REAL screw-ups as a pro! In 1988, I found out the field lenses in A CUSTOMER’S Bushnell Ensign were made of plastic. When I touched one with the acetone-coated swab, I quickly removed it. At least I pulled it away ... and pulled the lens out of my left hand. I WAS able to remove the largest part of the swab ... but not the 75-80 cotton fibers that liked being where they had been placed.

I had another good “bad example,” my customer enjoyed the better quality Minolta I gave him, and I became wary in repairing inexpensive binoculars.

Bill
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