Search found 142 matches

by mnmyco
Thu Sep 19, 2019 6:31 am
Forum: My microscope
Topic: Bausch and Lomb help!!!
Replies: 4
Views: 2275

Re: Bausch and Lomb help!!!

https://www.studyread.com/microscope-parts/

That will give you info on the parts of the same style of microscope. It would be much easier to refer to photos than parts of a video. You mentioned you had questions, what are they?

MNMyco
by mnmyco
Wed Sep 18, 2019 1:10 pm
Forum: For forum members who want to buy and sell equipment
Topic: Wanted AO 20 compatible pieces
Replies: 5
Views: 2796

Re: Wanted AO 20 compatible pieces

I’ve always read that the NA is always limited to the lowest part of the system. I did not think that there would be a “functional NA” in the manner you describe. Good info to know. And thanks for the condenser information. I will keep an eye out for those pieces. You are talking about just the lens...
by mnmyco
Tue Sep 17, 2019 6:01 pm
Forum: For forum members who want to buy and sell equipment
Topic: Wanted AO 20 compatible pieces
Replies: 5
Views: 2796

Re: Wanted AO 20 compatible pieces

That is some great information, thanks. We had a discussion about the 1240 condenser with 1242 top lens a while ago. You determined that as a BF it was working around 1.3 NA aspheric and somewhere slightly less than 0.9 NA dry. http://www.microbehunter.com/microscopy-forum/viewtopic.php?f=5&t=6491 I...
by mnmyco
Mon Sep 16, 2019 1:46 pm
Forum: Identification help
Topic: No idea I
Replies: 5
Views: 3079

Re: No idea I

Probably a Chlorococcus, Oocystis, or Sphaerocystis species.

MNMyco
by mnmyco
Sun Sep 15, 2019 3:16 am
Forum: Microscopes and optics
Topic: Leitz ortholux nosepiece and stage repair
Replies: 5
Views: 2498

Re: Leitz ortholux nosepiece and stage repair

https://m.youtube.com/watch?v=QFTAQKkS1Ek You can adjust the stage tension and all that. It has been a while since I worked on mine, but I did have to disassemble the entire stage mechanism. There are screws that I think are pretty obvious to adjust tension, but I recall that it was quite difficult...
by mnmyco
Sat Sep 14, 2019 11:18 pm
Forum: Microscopes and optics
Topic: What is the function of these graduations
Replies: 18
Views: 3508

Re: What is the function of these graduations

Not sure. Maybe to adjust for the difference distances that the image of your specimen is in focus. This way it could be used in more microscopes.

Mnmyco
by mnmyco
Sat Sep 14, 2019 5:27 am
Forum: For forum members who want to buy and sell equipment
Topic: Wanted AO 20 compatible pieces
Replies: 5
Views: 2796

Wanted AO 20 compatible pieces

Hi I recently changed jobs and am paid significantly more. Even better, I was given an AO 20 when I left. It needs nee prisms in the trinocular, has all the standard filters, came with the 1240 phase condenser with 1242 top lens (sadly missing bottom lens for bright field), the transformer, and some...
by mnmyco
Fri Sep 13, 2019 9:25 pm
Forum: Pictures and Videos
Topic: Onion skin
Replies: 4
Views: 1308

Re: Onion skin

Looks great. Can you tell the source of your filters?
by mnmyco
Fri Sep 13, 2019 9:24 pm
Forum: Microscopy accessories
Topic: Berek Condenser or Fraud?
Replies: 1
Views: 2520

Re: Berek Condenser or Fraud?

Never mind. Turns out it is just super dirty, to the point it looked like a curve in the metal around the base of the lens to its holder and is frozen from old grease. Not sure how to get it out actually.

MNMyco
by mnmyco
Fri Sep 13, 2019 1:57 pm
Forum: Microscopy accessories
Topic: Berek Condenser or Fraud?
Replies: 1
Views: 2520

Berek Condenser or Fraud?

I just bought what said it was a dual iris Berek Condenser, but the top flip out lens is not exchangeable. My understanding is that the Berek has to lenses, a 0.9 dry and a 1.25 oil lens. So, what do I have? It does has dual iris.

MNMyco
by mnmyco
Fri Sep 13, 2019 1:53 pm
Forum: For forum members who want to buy and sell equipment
Topic: Wanted Leitz Berek Oil Lens
Replies: 5
Views: 1983

Re: Wanted Leitz Berek Oil Lens

Isn’t Pv specific to the Heine condenser? If I had a Heine I would be very interest d in the 20x WE.

MNMyco
by mnmyco
Fri Sep 13, 2019 4:20 am
Forum: Microscopes and optics
Topic: Zeiss condenser Help
Replies: 3
Views: 1181

Re: Zeiss condenser Help

That looks like a part of the lighting system beneath a condenser.
by mnmyco
Fri Sep 13, 2019 1:21 am
Forum: Pictures and Videos
Topic: It's Pilz (Mushroom) Season
Replies: 3
Views: 1242

Re: It's Pilz (Mushroom) Season

If you have other photos of the full shape I might be able to get to species. Just a FYI, when using photos to ID mushrooms you really need images of the cap and stem details and textures, nice details of underneath the cap for the gills or pores, etc, and frequently a spore print makes a huge diffe...
by mnmyco
Fri Sep 13, 2019 1:04 am
Forum: For forum members who want to buy and sell equipment
Topic: Wanted Leitz Berek Oil Lens
Replies: 5
Views: 1983

Wanted Leitz Berek Oil Lens

Looking for the oil 1.25 NA lens for the Leitz Berek Condenser. Also, if any one someone for some crazy reason has a Heine condenser I’d at least like to hear the price.

MNMyco
by mnmyco
Thu Sep 12, 2019 10:49 pm
Forum: Microscopy accessories
Topic: Olympus equipment ID request
Replies: 2
Views: 2473

Olympus equipment ID request

UPDATED LINKS I believe this all went to an Olympus stereoscope but I am not 100% on that. https://1drv.ms/u/s!Aq4ki2WnhADKgQeuDLCpgMXaPB-t https://1drv.ms/u/s!Aq4ki2WnhADKgQieSFcp2EexcXEk Please don’t share the link too much. Also, I am not opposed to selling depending on certain factors. Thanks MN...
by mnmyco
Thu Sep 12, 2019 6:08 pm
Forum: Microscopy accessories
Topic: American Optical Trinocular Port Dust Plug
Replies: 6
Views: 3453

Re: American Optical Trinocular Port Dust Plug

At hardware stores, in the specialty section, I have found metal and plastic hole plugs for things like the holes in desks for wires. These work well and have the benefit of being professionally manufactured.
by mnmyco
Thu Sep 12, 2019 6:02 pm
Forum: Microscopes and optics
Topic: AO Objective Identification
Replies: 5
Views: 2082

Re: AO Objective Identification

Anyone happen to know if these would work on an Ortholux with a Heine condenser? Hopefully I can get a hold of a Heine some time. I know the 160 length is compatible.

Thanks MNMyco
by mnmyco
Thu Sep 12, 2019 3:58 pm
Forum: Pictures and Videos
Topic: It's Pilz (Mushroom) Season
Replies: 3
Views: 1242

Re: It's Pilz (Mushroom) Season

You have a Lycoperdon species of puffball.
by mnmyco
Thu Sep 12, 2019 3:17 am
Forum: Beginner's corner
Topic: Can't see sperm in microscope
Replies: 5
Views: 2800

Re: Can't see sperm in microscope

It has been a while since I looked at live sperm in the microscope, but as I recall using a coverslip and depression slide it was easy to see them. I am not sure what you would add to thin the solution out, which may help, but it won’t be simply adding water. I think you will have better luck using ...
by mnmyco
Thu Apr 04, 2019 7:36 pm
Forum: Identification help
Topic: Fungus Identification Help
Replies: 12
Views: 5272

Re: Fungus Identification Help

I missed those. Thanks.

It looks like there is a mucor-like species, perhaps a aspergillus as well, and then the purple colored one, I am not so sure about.
by mnmyco
Thu Mar 28, 2019 1:13 pm
Forum: Identification help
Topic: Fungus Identification Help
Replies: 12
Views: 5272

Re: Fungus Identification Help

Mycologist here. You just have hyphae and there is really no way of IDing it based on the photo alone. Fusarium species are very common and can come in many bright and distinctive colors. Until you find a spore producing structure I am afraid the best anyone can do is point towards a group of fungi.
by mnmyco
Wed Mar 27, 2019 10:21 pm
Forum: Microscopes and optics
Topic: Old microscope stuck
Replies: 15
Views: 4001

Re: Old microscope stuck

I had to resort to engine degreaser (basically diesel fuel) to remove the hardened crap on an ortholux.
by mnmyco
Wed Jan 16, 2019 7:30 pm
Forum: Specimens, samples and slides
Topic: Moss Capsule sectioning for slide making
Replies: 37
Views: 8910

Re: Moss Capsule sectioning for slide making

If you want something clearer than agar try gellan gum. I like it myself. Use about 1/2 the amount of agar normally used, and most of the time it needs a small bit of calcium in it to polymerize. Also, it can take higher temps than agar. It is absolutely clear unless you use highly concentrated amou...
by mnmyco
Mon Dec 10, 2018 2:37 pm
Forum: Identification help
Topic: Tiny and Tinier?
Replies: 2
Views: 1510

Re: Tiny and Tinier?

Don't think we can ID from that video. Buy some of the stuff suggested. If you want to buy methyl cellulose and make your own, here is how. I make a 2% solution Materials Beaker stirring hotplate--This is actually very important stir bar distilled or spring water methyl cellulose (I use 4000 cst, I ...
by mnmyco
Mon Dec 10, 2018 2:20 pm
Forum: Camera systems and imaging
Topic: Connecting Canon DSLR to Leitz trinocular head with all-Leitz components
Replies: 52
Views: 17342

Re: Connecting Canon DSLR to Leitz trinocular head with all-Leitz components

I have a canon 60d and an ortholux with a trinocular head. I use this: https://www.amazon.com/OMAX-Microscope-Adapter-Canon-D-SLR/dp/B01D914LT2 It works in any eyepiece so I do not need all the other attachments. It is a built in 2x lens. mnmyco This OMAX adapter works very well with the Nikon trin...
by mnmyco
Fri Dec 07, 2018 8:35 pm
Forum: Microscopy accessories
Topic: Old hand held microtome worthwhile?
Replies: 5
Views: 2734

Re: Old hand held microtome worthwhile?

Use the thin razor blades that fit in older shaving razors. The double sided razors are the thinnest, just break it in have to have two blades.

mnmyco
by mnmyco
Wed Dec 05, 2018 10:23 pm
Forum: Pictures and Videos
Topic: Some better targets for HMC
Replies: 14
Views: 2916

Re: Some better targets for HMC

So jealous. Maybe I will take the time to make my own HMC slit plates.

mnmyco
by mnmyco
Wed Dec 05, 2018 9:23 pm
Forum: Pictures and Videos
Topic: Hoffman Modulation Contrast
Replies: 14
Views: 2480

Re: Hoffman Modulation Contrast

Hoffman is especially best for use with plastic petri dishes; since crossed polarizers (i.e., a polarizer and an analyzer) are not used, as they are in DIC, there is no colored strain-patterning in the field, as there would be if DIC was used with plastic dishes. The resolution is not as good as DI...
by mnmyco
Wed Dec 05, 2018 4:38 pm
Forum: Pictures and Videos
Topic: Hoffman Modulation Contrast
Replies: 14
Views: 2480

Re: Hoffman Modulation Contrast

Hoffman avoids the costly prisms of DIC, that is the main bonus. The book, Light and Video Microscopy by Randy Wayne has a great chapter on it. It only uses a polarizing filter, retardation film, and slits in filters to to convert phase differences in the specimen into visible differences. A slit fi...
by mnmyco
Mon Dec 03, 2018 9:24 pm
Forum: Pictures and Videos
Topic: more Biddulphia pulchella
Replies: 16
Views: 2925

Re: more Biddulphia pulchella

Well, I know nothing about said Biddy, but this is a the fine tome that I use to unpick an understand the binomial names in my Botanical pursuits - I find it very useful indeed to understand the meanings that are so often considered prosaic although personally I find a certain charm 'in there' also...