Search found 1525 matches

by KurtM
Sat Dec 14, 2019 1:02 am
Forum: For forum members who want to buy and sell equipment
Topic: AO - American Optical Series 20 (H20,H21) lamp
Replies: 4
Views: 85

Re: AO - American Optical Series 20 (H20,H21) lamp

I have an AO20 hulk that appears to have an intact collector lens. (I bought it for the lamp holder to use in my AO120.) Email me and I'll send detail pix, addy below in sig line.
by KurtM
Sat Dec 14, 2019 12:53 am
Forum: Pictures and Videos
Topic: Navicula lyra
Replies: 15
Views: 445

Re: Navicula lyra

Glen is the reigning wizard of the planapo 63x/1.4, I can never understand how he does it.
by KurtM
Sat Dec 14, 2019 12:51 am
Forum: Pictures and Videos
Topic: Diatoms from the Seychelles!
Replies: 13
Views: 189

Re: Diatoms from the Seychelles!

Interesting thread, great images, really like the oblique view!

Yes, getting a look at a variety of angles is hugely helpful to understanding the architecture of these fascinating forms! Here's an article I found pretty interesting on the very subject:
https://tinyurl.com/u5bchhq
by KurtM
Tue Dec 10, 2019 1:26 am
Forum: Specimens, samples and slides
Topic: A source for diatoms
Replies: 10
Views: 179

Re: A source for diatoms

Bob is giving excellent advice. I can only add that a series of three short Youtube videos have inspired several of us to delve more into this fascinating subject.

https://www.youtube.com/watch?v=NrhSqu8YCBo
by KurtM
Mon Dec 09, 2019 4:56 pm
Forum: Resources (online, books etc.)
Topic: DIY Centrifuge
Replies: 10
Views: 2033

Re: DIY Centrifuge

Bob, I'm with you. I've tried a couple of electric centrifuges for diatom cleaning, and have gone back to my good old hand cranked one. I also use the larger 15 ml tubes, incidentally. Love the proliferating crank items -- I still use a hand cranked can opener, also have a hand cranked paper shredde...
by KurtM
Sat Nov 30, 2019 1:24 am
Forum: My microscope
Topic: When You're Hot, You're Hot. Looky Here What I Got!
Replies: 7
Views: 327

Re: When You're Hot, You're Hot. Looky Here What I Got!

Jim! So good to see you - I've been wondering what you were up to lately. Congratz on the new addition, and keeping fingers and toes crossed that it arrives in even better shape than you hoped!
by KurtM
Wed Nov 27, 2019 1:39 am
Forum: Pictures and Videos
Topic: Algae, or Desmid (or is that redundant)?
Replies: 6
Views: 216

Re: Algae, or Desmid (or is that redundant)?

Thanks Glen, I'm getting more comfortable with it now. One thing's for sure - I'm not one to jump to conclusions when it comes to ID.
by KurtM
Tue Nov 26, 2019 1:35 am
Forum: Pictures and Videos
Topic: Algae, or Desmid (or is that redundant)?
Replies: 6
Views: 216

Re: Algae, or Desmid (or is that redundant)?

First: no, I don't mind you or anyone else tweaking my images ('specially you, Glen), I'm here to learn! And you're right, of course, it does look nicer. I never even thought about adjusting the levels so let that be a lesson to me. Funny, I have the same book and saw the same illustration. But I'm ...
by KurtM
Mon Nov 25, 2019 7:31 pm
Forum: Pictures and Videos
Topic: Algae, or Desmid (or is that redundant)?
Replies: 6
Views: 216

Algae, or Desmid (or is that redundant)?

I recently came across this very pretty bit of greenery while perusing water from a local pond sample, and thought for sure it must be some Desmid I haven't seen before. But a more experienced friend suggests it's the alga Coelastrum. I can see where he gets his ID, but it still strikes me as a Desm...
by KurtM
Mon Nov 25, 2019 6:18 pm
Forum: Resources (online, books etc.)
Topic: The Freshwater Microscopist by Tony Pattinson
Replies: 7
Views: 2470

Re: The Freshwater Microscopist by Tony Pattinson

Tony Pattinson has recently released the 4th volume of his Freshwater Microscopist series, an informal common sense guide to collecting, handling, and studying the wee life forms found in ponds, rivers, and lakes. Ever wish you had a knowledgeable, experienced mentor for your microscopy hobby? Well,...
by KurtM
Mon Nov 18, 2019 1:55 am
Forum: Microscopes and optics
Topic: Considering an inverted
Replies: 14
Views: 1130

Re: Considering an inverted

Reply sent.
by KurtM
Tue Oct 29, 2019 2:08 am
Forum: Articles and images to be published
Topic: Nikon Small World Photo Winners
Replies: 2
Views: 1412

Re: Nikon Small World Photo Winners

Cool, thanks for posting!

(Wonder what Charles Krebs is up to these days?)
by KurtM
Sun Oct 13, 2019 2:03 am
Forum: Microscopes and optics
Topic: Early patents related to phase contrast
Replies: 7
Views: 1228

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: 1228

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: 960

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: 14
Views: 1130

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: 8
Views: 1269

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: 1581

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: 1797

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: 13132

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: 1581

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: 1608

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: 1608

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: 4588

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: 1060

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. (revised id: Climacosphenia moniligera)
Replies: 12
Views: 1591

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: 933

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: 1234

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: 2856

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: 2744

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...