MicrobeHunter.com Microscopy Forum

Okay! I've received the Swift W10x 15.5mm eyepieces and the LOMO 40x 0.75 water immersion objective. Both appear excellent condition so far. One eyepiece actually has a reticle for measuring objects; surprise bonus. So far, I've learned I'll have to use the Spencer Research Microscope. The LOMO obje...

Hello. I’m posting to report the objective lens I order from a seller in Ukraine February 2 arrived safe, no problems, no delays, no additional cost. It actually arrived ahead of the estimated delivery date. Transit time Ukraine to Wisconsin was about 18 days. Thank you everyone for your responses t...

Black vs. Grey

The thickness of the top portion is important. Maybe black can replace grey, but not vice versa?

Later ones were also grey enamel and sometimes coated, which makes a difference. I purchased a small group of assorted Spencer stereo microscope objectives, different eras, just to get the 6x objective. As expected, the black one worked and a grey ones did not. No one else bid on it, so it was stil...

Hello.

I might be interested in the 8x version of the 1940s Spencer stereo microscope objective shown below. Please message if you know where I might find one. Thank you.

Hello. Can someone help identify this organism attached to a small rock? I found the rock on a path along a lake in central Wisconsin, USA. I don't know whether it's a local rock or fill brought in for the path. I assume it's a fresh water creature. I picked up the rock because it's sparkly and was ...

AO 10XW.F. cat.146 is a slightly undercorrecting eyepiece yielding some ca beginning about 35-40° off axis to a lightly noticeable blue inside and yellow/red outside at the periphery. A tolerable eyepiece for that objective. Good to know! I have a pair of AO 10XW.F. cat. 146 eyepieces, so I'll have...

Okay. I might have figured out the symbol. It appears associated with “homal” or “gomal” eyepieces that flatten the curvature of the field of view. Sorry, cannot figure out how to type proper Russian letters.

Scarodactyl wrote: ↑

Wed Nov 01, 2023 1:08 am

blind deconvolution

Thank you for providing the term for this.

Now I’m wondering whether better stacking software has settings for this.

https://en.wikipedia.org/wiki/Blind_deconvolution

Thank you for answering the question. The choice is depth of field vs. resolution. I should have chosen a more realistic set of numbers. For context, here is a table from a 1946 Spencer Microscope catalogue. Screen Shot 2024-02-04 at 2.52.48 PM.png I should have chosen 9x or 10x eyepiece and 3x or 4...

Hello. This is a curiosity question, not trying to solve a specific problem. Could someone please describe the expected pros and cons — or direct folks to a website — of using a stereoscope (dissecting microscope) vs. a compound microscope at a given total magnification. For example, both equipped w...

Hello charlie g Thank you for sharing your experience. I feel a seller should know all fees, and clearly list them prior transaction, for shipping an item out of their country. The Singapore incident looks like several layers of corruption. I know I cannot change the world and must just accept the c...

Thank you everyone for your helpful replies. I don’t have experience with this and was worried when I read the fine print on the eBay website. I won’t worry about buying a low cost item. We’ll see how it goes.

I use them because they offer water immersion and dipping features for 160mm tube length at mid to high powers for cheap; alternative modern versions would cost >$300 USD (if not in thousands). What sort of eyepiece do you use for the LOMO 40x water immersion objective? I've decided I want a LOMO 4...

I give up. After more intense Googling, I've concluded the weird shape is a partial Zeiss logo the LOMO engineer couldn't eliminate from the manufacturing process ... or a primitive LOMO logo based on the Zeiss logo.

Hello. Can someone familiar with the process please warn me regarding extra costs, fees, import tax, et cetera I might encounter importing an item (eyepieces, objectives, small microscope parts) from Europe to the United States? I don't have a specific country in mind. Is there a a good website to g...

What other markings are there on the objective barrel ? MichaelG. Just the Russian letters for V and E, indicating water immersion. Plus magnification, aperture, and serial number. I tried Google Image search. It actually resembles the Reichert logo, minus word Reichert, on one objective I found.

Hello.

Thank you for this thread. Can someone suggest the meaning of the following symbol on a LOMO water immersion objective?


Thanks.

Regarding your iPhone … I have an iPhone 13. Two problems were (1) you cannot turn off the Lidar sensor (used for focusing at night) and (2) the software struggles to choose a lens once the phone is close to the eyepiece. It is important to cover the Lidar sensor with a piece of black material so it...

A bigger problem is the fine focus, which I suspect is stuck at a low point. I have not disassembled one but based on the design of some of Spencer's other older fine focus mechanisms, it is likely a worm and nut design which cantilevers a moving apex up and down as the screw is turned with the knu...

Slight tangent, since the fine adjustment for the condenser entered the discussion. Can someone please briefly describe proper use of the fine adjustment for the condenser on a Spencer Research Microscope? It's possible I don't know what I actually have or something is missing. Here's an image from ...

John has low confidence and fears breaking something ever since he broke detent on the antique Spencer Buffalo. 🙂 Also, I briefly panicked when a spring jumped out when I took something apart. The DF lens integrated into the dovetail, with the centering screws below the dovetail, is very intimidatin...

Maybe the first thing to do is to try out the DF condenser head? Hello Chas. A shoal of red herring are fine here. I often get bogged down by an idea, endless Googling, and miss more efficient solutions using “parts” on hand. The DF condenser works up to 20x on a Spencer No. 5 and on a Nikon Alphap...

Juet to be clear. What microscope are you adapting this to? Spencer No. 5 Research Microscope The top part of the current condenser, which is quite nice, is attached by RMS threads. The top part — the working part — of the darkfield condenser is close to 1” diameter. It would be most convenient to ...

Okay. Can’t upload photos for some reason. Arrrgh. Anyway … I moved the condenser holder as high as physically possible. The top of the darkfield condenser lens is about 20.5 mm from the bottom of a slide. Threading the top portion out of the assembly might give me few mm, but no longer firmly attac...

Is it possible that the wedge-shaped ring is mounted the wrong way up? ....I only say this because R&J Beck condensers have the flanged face of the wedge-ring turned towards the bottom. (I guess it helps to keep the condenser body aligned) I briefly wonder about this. But the condenser dovetail is ...

I apologize for occasional poor or absence photos. I find it difficult to resize for the forum. So there’s higher activation energy to transfer to the iMac to properly resize. I took the photo of the condenser, the one I bought, off of eBay. Several do have longer adjustment screws, but otherwise ap...

I wish to share some limited, but potentially important experience here. I tried to fill in some magnification gaps on older microscopes (1940s or 1950s) and quickly learned a newer objective, same magnification, might be significantly physically longer than an older objective. And there isn’t room ...

Okay. After reading everything I could find in the forum, carefully checking specs, and measuring my condenser holder, I decided to try this Spencer condenser … IMG_5452.jpeg I neglected one measurement. The dovetail fits perfectly, but the darkfield condenser is much simpler and much shorter than t...

I second trying Etsy. Here is an EXAMPLE not an endorsement … https://www.etsy.com/listing/1379055452/glass-disk-between-2-inch-through-399 I ordered a smooth white glass disc from a different vendor to use as a “mirror”. It was very nice. Inspect photos closely when searching Etsy and don’t necessa...