Search found 1513 matches

by KurtM
Sun Oct 13, 2019 2:03 am
Forum: Microscopes and optics
Topic: Early patents related to phase contrast
Replies: 7
Views: 588

Re: Early patents related to phase contrast

Thanks, 75 - that's perfect.

MichaelG., sorry I was less than clear, but 75RR got us covered so all is well. Thanks again, amigo.
by KurtM
Sat Oct 12, 2019 2:46 am
Forum: Microscopes and optics
Topic: Early patents related to phase contrast
Replies: 7
Views: 588

Re: Early patents related to phase contrast

May I respectfully request a distillation of this thread in plain English for us Earth People? Thank you. 8-)
by KurtM
Mon Sep 30, 2019 12:48 am
Forum: Pictures and Videos
Topic: Colurella sp
Replies: 14
Views: 425

Re: Colurella sp

75RR is the wizard of the Zeiss 63x/1.4 Planapo for sure. If I ever get back in my lab I may be hitting him up for advice - mine gives me fits!
by KurtM
Mon Sep 30, 2019 12:36 am
Forum: Microscopes and optics
Topic: Considering an inverted
Replies: 11
Views: 379

Re: Considering an inverted

For whatever it's worth, I obtained a Nikon Diaphot TMD equipped with phase and with DIC from the guy in the eBay ad in the original post, very similar to the one linked to above, and have been past delighted with it. I had tried a couple other inverted scopes but could never quite get comfortable w...
by KurtM
Mon Sep 30, 2019 12:25 am
Forum: My microscope
Topic: Zeiss Tessovar
Replies: 5
Views: 251

Re: Zeiss Tessovar

Very cool to see! I guess this means there are at least two in Texas - "Nessy the Tessy" is a marvelous monster that lives in my lab. I could use a better picture of it, however (as with the original Nessy, I suppose).
by KurtM
Sat Aug 24, 2019 12:39 am
Forum: Pictures and Videos
Topic: Desmidiacea images - Tharandter wood, Saxonia, Germany
Replies: 20
Views: 1175

Re: Desmidiacea images - Tharandter wood, Saxonia, Germany

They are not zip-locked... Indeed, zip-lock bags, commonly assumed to give watertight seal, don't really. I'm an old canoe and kayak instructor among other things, and can't tell you how many sad tales of heartache I've seen and heard about people putting valuables in ziploc baggies only to end up ...
by KurtM
Fri Aug 23, 2019 1:08 am
Forum: Beginner's corner
Topic: My first project microscope - Optiphot questions
Replies: 11
Views: 1286

Re: My first project microscope - Optiphot questions

Nicely done - a lovely instrument! I have a Labophot and Diaphot TMD, and can vouch for the very nice phase contrast your Nikon is likely to deliver.

Here's a web site with Nikon info you might enjoy: https://lavinia.as.arizona.edu/~mtuell/ ... heads.html
by KurtM
Thu Aug 22, 2019 12:58 am
Forum: Beginner's corner
Topic: minimizing harm
Replies: 61
Views: 7509

Re: minimizing harm

mintakax, since you're relatively new here I'm unclear on whether you are able to swap PMs or not, so would you please drop me PM, or email? I have a Buddhism-related question I'd like to ask, that's off-topic for this forum.
by KurtM
Thu Aug 22, 2019 12:51 am
Forum: Pictures and Videos
Topic: Desmidiacea images - Tharandter wood, Saxonia, Germany
Replies: 20
Views: 1175

Re: Desmidiacea images - Tharandter wood, Saxonia, Germany

Fantastic - please keep the desmid images coming! (And yes, please post a picture of the sample bag, sounds interesting.)
by KurtM
Thu Aug 22, 2019 12:46 am
Forum: Identification help
Topic: Diatom ?
Replies: 17
Views: 959

Re: Diatom ?

Now there's one I'm totally unfamiliar with. Let's look into it and see if we can tag this guy. And you only found one? What size sample and from where - benthic, planktonic, or ? Or were you in the marina scraping mooring lines again? 8-) Do keep an eye out for others.
by KurtM
Wed Aug 21, 2019 12:46 am
Forum: Identification help
Topic: Diatom ?
Replies: 17
Views: 959

Re: Diatom ?

First thing I thought is Entomoneis.
by KurtM
Tue Aug 20, 2019 1:09 am
Forum: Home-made microscope adaptations
Topic: Home made (Very Basic) Microtome
Replies: 42
Views: 2941

Re: Home made (Very Basic) Microtome

Very cool! Just in case somebody finds it useful, here's a hint for the sharpest razor blades you can buy locally: They still make and sell double-edged safety razor blades (I'm in the USA), find 'em in the grocery store, much keener than box cutter or single edge razor blades. Super glue or tape a ...
by KurtM
Sun Aug 11, 2019 12:48 am
Forum: Resources (online, books etc.)
Topic: Diatom Web Page
Replies: 3
Views: 693

Re: Diatom Web Page

Oh now that looks interesting indeed. Thanks for posting!
by KurtM
Sat Aug 10, 2019 1:05 am
Forum: Pictures and Videos
Topic: Licmophora sp. (more)
Replies: 12
Views: 1319

Re: Licmophora sp. (more)

I suppose it should have occurred to me...
Now there's a great big lurking "gotcha" in diatom study right there: keeping on your toes for the valve view vs. girdle view thing. If I had a dollar for every time I've been bamboozled by that one I could buy a new bottle of Pleurax. 8-)
by KurtM
Sat Aug 10, 2019 12:59 am
Forum: Resources (online, books etc.)
Topic: Diatomaceae Genus Type Slide
Replies: 3
Views: 569

Re: Diatomaceae Genus Type Slide

Zeiss Standard WL on sick leave
Oh my, I hope it's not serious, and shall keep fingers crossed for speedy recovery.
by KurtM
Sun Jul 14, 2019 1:14 am
Forum: Microscopes and optics
Topic: Looking for a User's Manual for American Optical Epistar scope.
Replies: 11
Views: 942

Re: Looking for a User's Manual for American Optical Epistar scope.

I'll tell you what would be a fun thing to do with it: sell it to me. :P :lol: Seriously, I just wrote our buddy Tom asking (more) questions about these stands (again), been wanting one for the past little while but have been consumed with rebuilding my antique house for the past 6 months, before it...
by KurtM
Wed Jul 10, 2019 1:18 am
Forum: Microscopes and optics
Topic: Help me build an American Optical frankenscope
Replies: 28
Views: 2310

Re: Help me build an American Optical frankenscope

Everybody sees things differently of course, so here are a couple comments from an old AO/Spencer enthusiast that are meant only to offer my own personal take on life. First, the bright field, POL, and phase contrast all can be in the same stand - why not? If I had room and inclination to keep (yet)...
by KurtM
Tue Jul 09, 2019 1:15 am
Forum: About the website, the magazine and this forum
Topic: Cover slip container
Replies: 6
Views: 2242

Re: Cover slip container

In his epic thread on making diatom slides... http://www.microbehunter.com/microscopy-forum/viewtopic.php?f=10&t=3036&start=60 ...my friend rnabholz mentions getting one and digging it! Now I wonder where I got the hint, as I'm 99.99% sure I didn't think it up all by myself. Oh well, thank you whoev...
by KurtM
Mon Jul 08, 2019 12:58 am
Forum: Pictures and Videos
Topic: Melosira nummuloides
Replies: 11
Views: 1011

Re: Melosira nummuloides

Bravo!

(And I agree with Hobbyst46.)
by KurtM
Mon Jul 08, 2019 12:55 am
Forum: About the website, the magazine and this forum
Topic: Cover slip container
Replies: 6
Views: 2242

Re: Cover slip container

I bought one of these about 4 years ago and have been living happily ever after. https://tinyurl.com/yxrhnvpu Seriously, it's so great I ordered a second one for backup, haven't needed it yet, and I makes lots of slides. This baby makes picking up cover slips fun! In case the URL doesn't work: eBay ...
by KurtM
Tue Jul 02, 2019 1:04 am
Forum: Pictures and Videos
Topic: Centric Diatom
Replies: 5
Views: 525

Re: Centric Diatom

I imagine, their processing of the diatom for SEM modified the frustule, and made it sort of less round, more heart-like. Although far from certain, I'm thinking there's enough subtle shape variation in this one to cover a bit of outline discrepancy. Campylodiscus is a notoriously tricky bunch, a g...
by KurtM
Tue Jun 25, 2019 12:38 am
Forum: Pictures and Videos
Topic: Marine diatom
Replies: 12
Views: 1836

Re: Marine diatom

Yes, what an exceedingly pleasing image! Always so nice to see living diatoms "doing their thing".
by KurtM
Sat Jun 22, 2019 12:37 am
Forum: Pictures and Videos
Topic: Mineral thin section displaying Biotite
Replies: 5
Views: 1045

Re: Mineral thin section displaying Biotite

Very cool post! We don't see a lot of this sort of thing on this forum, and that's precisely what makes it so especially interesting. I hope you (and anyone else who has them) will post more thin section pics, and perhaps give a few words on them for context. I love it!
by KurtM
Fri Jun 21, 2019 2:06 am
Forum: For forum members who want to buy and sell equipment
Topic: FOR SALE - Leitz Orthoplan ++ extras
Replies: 13
Views: 1370

Re: FOR SALE - Leitz Orthoplan ++ extras

Well, John, I must say I certainly admire your style, and can hardly wait till the first images from your new BX stand come in...
by KurtM
Sun Jun 16, 2019 1:50 am
Forum: For forum members who want to buy and sell equipment
Topic: Nikon E400 with many accessories, anyone have any idea what it's worth?
Replies: 7
Views: 1050

Re: Nikon E400 with many accessories, anyone have any idea what it's worth?

I was hoping to see this generate some discussion, as I have pretty much the same question going myself: I also happen to be a diatom enthusiast with a complete E400 stand that needs a new home. I take it OP is in the UK; I am in the States. I fear no "pre-owned name brand" microscope ever sells for...
by KurtM
Tue Jun 11, 2019 1:31 am
Forum: For forum members who want to buy and sell equipment
Topic: Interested in a DIC microscope.
Replies: 11
Views: 2195

Re: Interested in a DIC microscope.

This guy has several complete "turnkey" stands available for what I think are reasonable prices. I own two DIC stands, an upright and an inverted, the latter came from him and I am delighted with it. I feel comfortable recommending him as a seller who knows his wares, as opposed to one of the (too) ...
by KurtM
Sun Jun 09, 2019 1:11 am
Forum: Pictures and Videos
Topic: Shell picking from Red Sea sand
Replies: 45
Views: 6865

Re: Shell picking from Red Sea sand

Please do be aware that not all harsh reflections are bad. In macro and extreme macro it's certainly a major challenge to avoid blown out highlights, and much has been written and discussed on the subject, but we must be careful to remember that occasionally, even if only very occasionally, harsh re...
by KurtM
Fri Jun 07, 2019 12:55 am
Forum: Pictures and Videos
Topic: Shell picking from Red Sea sand
Replies: 45
Views: 6865

Re: Shell picking from Red Sea sand

That tiny shell is beautiful, looks to be a ton of potential in it for a truly spectacular image - not that the ones you posted aren't very nice, just looks like a grand subject to play around with if it's your thing. Be really great if some size context could be added to show just how tiny it is, l...
by KurtM
Fri May 31, 2019 12:59 am
Forum: My microscope
Topic: Bobs traveling microscopy kit (plancton)
Replies: 29
Views: 6991

Re: Bobs traveling microscopy kit (plancton)

Here are some collecting pictures Michel Haak, a fellow in The Netherlands who might know a thing or two about diatoms, sent me a while back. Seems he stashes a piece of glass by a piling to lure in some sample material. Depending on time of year, the pond's vitality, etc., etc., that chunk of glass...
by KurtM
Thu May 30, 2019 12:53 am
Forum: My microscope
Topic: Bobs traveling microscopy kit (plancton)
Replies: 29
Views: 6991

Re: Bobs traveling microscopy kit (plancton)

Wow, what a video! I especially enjoyed and appreciated it since I myself have had the very special pleasure of paddling with dolphins just like that, except for the clear water (sigh). One of my old (fellow sea kayak advanced open water skills instructor) buddies was a TAMUG/MFL marine biologist sp...