MicrobeHunter.com Microscopy Forum

https://photos.smugmug.com/Other/n-xC6Rt/Microscopy/i-STN8N9L/0/5f46640a/XL/IMG_2418-XL.jpg The exquisite “large XY stage E” is rotatable with no brake as far as I can tell. There is no goniometer, which would have been good for measuring angles. I might try designing and attaching one at a later d...

1 Google Applied Precision Immersion Oils 2. Listed you will find Delta Vision Imaging System User's Manual. Click on that. 3. Download Delta Vision Elite User's Maual.pdf. 375 pages, 22.54 mb. It's got to be there. Greg I can't find "Delta Vision Elite User's Maual.pdf" in step 3 above using your ...

These oils were originally meant for the GE DeltaVision OMX structured illumination super-resolution microscope. Here’s a document from them about selecting the right refractive index oil for the sample using their “oil calculator app”.

Applied Precision was acquired by GE Healthcare some time ago, and subsequently GE shut down their microscopy business if I’m not mistaken. I felt that calling them would be a dead end. I felt there was a fair chance that someone on the forum has used these oils before and could perhaps share not on...

https://photos.smugmug.com/Other/n-xC6Rt/Microscopy/i-2p2qv2q/0/191250e8/XL/IMG_2414-XL.jpg I recently took over a set of immersion oils of refractive indices from 1.500 to 1.534 in increments of 0.002, made by Applied Precision. Does anyone have any SDS or information on the composition of these o...

Thank you everyone for your many suggestions and the fascinating insights into non-homogeneous immersion objective design and glass disease. https://photos.smugmug.com/Other/n-xC6Rt/Microscopy/i-VSTsXN7/0/b8a4d0e4/XL/microscope%20objective%20fume%20hood%20isopropanol%20heptane-XL.jpg I have tried mu...

Here are photos of the reflected light setup that I used to micrograph the front lens of the objective. https://photos.smugmug.com/Other/n-xC6Rt/Microscopy/i-GT8Rc8G/0/1d27e501/XL/IMG_2294-XL.jpg To create enough vertical space for the objective, I removed the stage insert and transmitted light cond...

Thank you again for all your comments and suggestions. As requested here's a high-magnification micrograph of the lens surface with coaxial reflected light. https://photos.smugmug.com/Other/n-xC6Rt/Microscopy/i-9JK5Vwd/0/f0ebf746/XL/coaxial%20reflected%20high%20mag-XL.jpg The image is white balance-...

I had a look into my tube: It is this typical oldfashioned blackened brass with no light baffles in it. But they may have been removed when the bino tube was attatched. The bino tube has a lens right at the bottom. The physical length of the bino tube is longer than 160mm so this has to be compensa...

Interesting scope. The large tube was important enough to get mention in the literature you've shown - I'm curious what purpose it had? Hi Pete, do you mean the diameter of the tube above the nosepiece? I think it helps to increase contrast by cutting down reflections and underlines the visual impr...

https://photos.smugmug.com/Other/n-xC6Rt/Microscopy/i-q49KQsv/0/9ce4e6aa/XL/IMG_2346-XL.jpg https://photos.smugmug.com/Other/n-xC6Rt/Microscopy/i-HWSSrMt/0/bb287f35/XL/IMG_2347-XL.jpg Visually the oil immersion objective seems to be encased in copper and brass with nickel-plated tarnishable tip. It...

Continuing with my inspection - The four apochromat objectives are like jewels with their finely knurled rings and specs engraved in an engineering-typewriter font. They look like real objectives compared with the printed Arial font on modern objectives that look as if they were typed out in Microso...

Even though they can’t scan it, hopefully they can tell me over email what’s written for my serial number. Unfortunately I have no connection with Hamburg or the Naturwissenschaftliche Gesellschaft, but I can play my favourite Bruckner and Mahler symphonies by the Wiener Philharmoniker and Berliner ...

Thank you! I love it and want to share the exploration and discovery with anyone who’s interested. I will try contacting the Zeiss archives. Hopefully they have the order book record for my instrument and are willing to answer. They put up some of that information online but, of course, it stops bef...

This post is about the ocular and the ocular tube. https://photos.smugmug.com/Other/n-xC6Rt/Microscopy/i-ZmHjC9j/0/1214be65/M/IMG_2372-M.jpg https://photos.smugmug.com/Other/n-xC6Rt/Microscopy/i-TpGQRgq/0/50e650e0/M/IMG_2383-M.jpg Does anyone have more information on the origin of this hyperplane 15...

Some initial engineering inspections and works: https://photos.smugmug.com/Other/n-xC6Rt/Microscopy/i-ZZL6Cv2/0/741e582f/M/IMG_2326-M.jpg https://photos.smugmug.com/Other/n-xC6Rt/Microscopy/i-Zxgz34N/0/8a80c4ca/M/IMG_2339-M.jpg Bent stage centering pin. The pin appears to be made of steel, with a ro...

katera-MKC-1.jpg Another close copy of the Zeiss GCE was the Katera MKC (link kindly given by apochronaut in another thread), but this one has a narrow tube more akin to the lower-end Zeiss Stativ E series. In another thread, apochronaut gives some insights into the indirect design connections amon...

Screenshot 2022-05-03 at 21.01.15.png In 1935, nine years after the advent of the Zeiss GCE, Olympus released its Homare UCE (above). It is near-identical to the Zeiss in almost every detail. The foot is not as graceful as the Zeiss, but its curved rear looks wider and possibly more stable than the...

https://photos.smugmug.com/Other/n-xC6Rt/Microscopy/i-xdnv26C/0/5d918977/L/IMG_2369-L.jpg The lettering seems to be inlaid with a grey-silver metal so as to give a flat surface, rather than just engraved. If someone has access to Lawrence Gubas’ book with the serial numbers, I will be grateful to h...

My "Saturn V" Olympus BHSP side-by-side with the Zeiss Jena Stativ GCE.

https://photos.smugmug.com/Other/n-xC6Rt/Microscopy/i-Cd7dR2d/0/293785e1/XL/IMG_2360-XL.jpg The G stand was born during the Golden Era of the Weimar Republic, in the same year that Germany joined the League of Nations (1926). But before its production ended, the Great Depression had swept across th...

Here are photocopied pages from the 1934 catalogue in english that came with the package. The first page bears rubber stamps "PHOTOMICROGRAPHY DEPARTMENT" (possibly where Martin Scott worked) and "JUN 11 1935". https://photos.smugmug.com/Other/n-xC6Rt/Microscopy/i-sr5GBMf/0/19e467fe/X2/IMG_2327-X2.j...

Additional information Google-translated from the Zeiss Archiv website : Bracket tripods with fine movement according to Meyer from 1925 The 1st construction of the fine gear movement according to Meyer was abandoned again relatively soon. Although it had proven to be quite advantageous when working...

Screenshot 2022-05-03 at 20.59.10.png Here’s relevant information on the Zeiss Jena G series microscopes, Google-translated from the 1927 catalogue : The tripod G is our large monocular tripod with ABBE's illumination apparatus and a wide tube, which is provided with an extendable tube and a fixed ...

I acquired a Zeiss Jena Stativ GCE (1926) as part of my strategic microscopy master plan. Having used automated motorized microscopes with a variety of modern contrast-enhancing and digital imaging technologies, I wanted to allocate some bandwidth to my childhood nostalgia of horseshoe-foot microsco...

Thank you all for your suggestions. I forgot to mention that the damage is on the outer surface of the lens - it's not very obvious from the images shown. I notice that acetone was not suggested as one of the cleaning agents - I assume that's because it could dissolve the cement holding the lens. We...

https://photos.smugmug.com/Other/n-xC6Rt/Microscopy/i-MztJs2f/1/23e8247e/M/IMG_2248-M.jpg I've had a chance to examine the front lens of this Zeiss C-apo 63x/1.2 water immersion objective that was being used on an inverted microscope for life sciences microscopy and possibly cell cultures. The fron...

Recently saw this at the front of a Sherman's Lagoon collection.

I notice that the square patch stuck on the front lens is translucent and doesn't look like a mirror, while the Mirau objective described in the link I gave earlier ( https://www.microscopyu.com/microscopy-basics/two-beam-interferometry fig. 5) shows and labels it as a mirror that reflects all of th...

Thanks for the additional information. It does seem to me that this kind of objective was initially developed for measuring the topography of microscopic surfaces but it turns out to be very useful for detecting external vibrations affecting a microscope as well.