Search found 1618 matches

by KurtM
Fri Jan 15, 2021 2:22 am
Forum: Sandbox
Topic: 100x oil vs. 100x dry objectives
Replies: 5
Views: 223

Re: 100x oil vs. 100x dry objectives

Somehow this reminds of something the dentists says when I balk at having some procedure done: "when it hurts bad enough you'll be back".

When you want to see whatever it is you're trying to see bad enough, you'll deal with the oil.
by KurtM
Wed Jan 13, 2021 1:18 am
Forum: Introduce yourself
Topic: Hello
Replies: 2
Views: 99

Re: Hello

Welcome Jim, lotsa old amateur astronomers, and ATMs too, here, and I know cuz I'm one of each. Took ya long enough to get here! :lol:
by KurtM
Fri Jan 08, 2021 12:18 am
Forum: Pictures and Videos
Topic: Antique Diatom Arrangement
Replies: 12
Views: 534

Re: Antique Diatom Arrangement

Howdy Wes. I'm currently using an Olympus BHS BH-2 with LED lamp and Zeiss rotating stage.
by KurtM
Thu Jan 07, 2021 7:16 pm
Forum: Pictures and Videos
Topic: Antique Diatom Arrangement
Replies: 12
Views: 534

Re: Antique Diatom Arrangement

http://www.microscopy-uk.org.uk/mag/indexmag.html?http://www.microscopy-uk.org.uk/mag/artdec10/bs-hardman.html MichaelG., I failed to notice that you gave a link to an article on the diatomist Hardman - thought it was a tag line URL I guess. Thank you, it's most interesting! And in it, there's one ...
by KurtM
Thu Jan 07, 2021 3:18 pm
Forum: Pictures and Videos
Topic: Antique Diatom Arrangement
Replies: 12
Views: 534

Re: Antique Diatom Arrangement

Many thanks for the kind words, all!

75RR, my apologies for the misspelling, and thanks for the correction. :oops:
by KurtM
Wed Jan 06, 2021 8:59 pm
Forum: Pictures and Videos
Topic: Antique Diatom Arrangement
Replies: 12
Views: 534

Re: Antique Diatom Arrangement

And one more, through the Nikon plan 100x/1.25
by KurtM
Wed Jan 06, 2021 8:58 pm
Forum: Pictures and Videos
Topic: Antique Diatom Arrangement
Replies: 12
Views: 534

Antique Diatom Arrangement

Though I check in pretty much daily, I haven't participated in this forum a lot lately so thought I'd offer the results of a little mini-project that kept me amused on a recent rainy day. It started with an antique diatom slide that I won in an auction on you-know-where, which I am told is "by Hardm...
by KurtM
Sun Jan 03, 2021 3:10 am
Forum: Beginner's corner
Topic: AO compound: model, year, repair ideas?
Replies: 10
Views: 575

Re: AO compound: model, year, repair ideas?

Yes, that's a very decent scope, especially for the price. It even has a POL turret intermediate tube (between the stand arm and bino head), which will be super nice once you discover the joys of simple polarization. If you desire to keep and use this scope for the usual pond water type of stuff, ge...
by KurtM
Sat Dec 19, 2020 1:30 am
Forum: Microscopes and optics
Topic: Use of oil immersion objective with live samples
Replies: 8
Views: 1004

Re: Use of oil immersion objective with live samples

Easier in that there's much more cover slip to work with, so you get a bigger target area.
by KurtM
Fri Dec 18, 2020 12:47 am
Forum: Microscopes and optics
Topic: Use of oil immersion objective with live samples
Replies: 8
Views: 1004

Re: Use of oil immersion objective with live samples

For those who do lots of wet mounts, try using 22 x 50 mm cover slips. The greatly increased area makes using immersion oil easier, and reduces sample dry-out.
by KurtM
Wed Dec 09, 2020 12:41 am
Forum: Specimens, samples and slides
Topic: The Importance of Proper Slide Storage
Replies: 10
Views: 2201

Re: The Importance of Proper Slide Storage

Generally, the less distance between cover slip and specimen the better. But, as you point out, not always. Thanks for making this post a little more useful.
by KurtM
Tue Dec 08, 2020 12:25 am
Forum: Microscopy accessories
Topic: Slide storage drawer cabinets. BAD IDEA!
Replies: 7
Views: 614

Re: Slide storage drawer cabinets. BAD IDEA!

Every once in a while I like to post on this subject...

viewtopic.php?f=10&t=9967
by KurtM
Tue Nov 10, 2020 2:21 am
Forum: Microscopy accessories
Topic: Slide labels
Replies: 8
Views: 1113

Re: Slide labels

I use a Brother QL-570 label printer and 1"x1" labels that I snagged on eBay for a reasonable price.

See: viewtopic.php?p=26613#p26613
by KurtM
Sat Oct 31, 2020 1:29 am
Forum: Microscopy accessories
Topic: Yet another DIY slide ringing table
Replies: 11
Views: 1244

Re: Yet another DIY slide ringing table

Here in the USA, I have tried quite a few ringing cements looking for that perfect one that will play well with Pleurax mounts (diatoms), and glycerin jelly mounts (pollen), and ended up calling Testor's black enamel the best of the bunch. It's a hobby paint most commonly known for dolling up plasti...
by KurtM
Fri Oct 30, 2020 12:23 am
Forum: Microscopy accessories
Topic: Yet another DIY slide ringing table
Replies: 11
Views: 1244

Re: Yet another DIY slide ringing table

Cool! What are you using for "ringing cement", and how is it working for you?
by KurtM
Sun Aug 23, 2020 12:52 am
Forum: Specimens, samples and slides
Topic: New Diatom Project
Replies: 64
Views: 8301

Re: New Diatom Project

Thanks, Charles. I've seen those (exceedingly nice!) videos and will be watching them again. Your written description is also helpful, and very much appreciated.
by KurtM
Sun Aug 23, 2020 12:38 am
Forum: Pictures and Videos
Topic: Actinocyclus octonarius
Replies: 5
Views: 772

Re: Actinocyclus octonarius

Yes, lovely! Nothing pretty as a living diatom shot...
by KurtM
Sat Aug 22, 2020 12:01 am
Forum: Specimens, samples and slides
Topic: New Diatom Project
Replies: 64
Views: 8301

Re: New Diatom Project

Very nice! One thing I've been wondering is how you get diatoms to 'release' from the needle onto the storage slide. Can't be using adhesive, because then you can't get 'em back off?

Sorry to hear you got hammered by the hurricane, looks like it may be our turn now. And the shed, that sucks.
by KurtM
Tue Aug 18, 2020 11:54 pm
Forum: Pictures and Videos
Topic: Pleurosigma angulatum + salt crystals
Replies: 11
Views: 1387

Re: Pleurosigma + salt crystals

A lovely image of a lovely diatom!
by KurtM
Sun Aug 16, 2020 4:30 pm
Forum: Microscopy accessories
Topic: Zeiss Rotating Stage - Need Help
Replies: 19
Views: 2409

Re: Zeiss Rotating Stage - Need Help

PeteM, thanks ... for me it's one microscope that's as much fun to look at, as look through. Hobbyst46, great question, thanks. I thought it might be an improvement in the 'feel' of the stage, as the original one (now on the Olympus) has an exceedingly 'free and easy' feel, as though it is lubed wit...
by KurtM
Sat Aug 15, 2020 11:14 pm
Forum: Microscopy accessories
Topic: Zeiss Rotating Stage - Need Help
Replies: 19
Views: 2409

Re: Zeiss Rotating Stage - Need Help

That would never have worked for me here, it kept jamming and actually took quite a bit of effort to get it going again. A couple times I wondered if I'd ever get it apart, it was that bad. I made a spanner out of a pair picks and a small hand screw type clamp, which was a bit clumsy but certainly d...
by KurtM
Sat Aug 15, 2020 7:47 pm
Forum: Microscopy accessories
Topic: Zeiss Rotating Stage - Need Help
Replies: 19
Views: 2409

Re: Zeiss Rotating Stage - Need Help

That explains why the two holes opposite each other. Now, how to kludge up a spanner to turn that ring?

Whoops never mind I got it.
by KurtM
Sat Aug 15, 2020 7:21 pm
Forum: Microscopy accessories
Topic: Zeiss Rotating Stage - Need Help
Replies: 19
Views: 2409

Re: Zeiss Rotating Stage - Need Help

Oh really ... it just threads out? Like a big screw? As in, "rightsy tightsy, lefty loosey"?

What do I need to know in order to prevent a ball bearing stampede? :shock:
by KurtM
Sat Aug 15, 2020 6:06 pm
Forum: Microscopy accessories
Topic: Zeiss Rotating Stage - Need Help
Replies: 19
Views: 2409

Re: Zeiss Rotating Stage - Need Help

Okay, I have disassembled to the point where the basic rotating part casting has nothing attached to it anymore, except the two rings. One ring, the innermost one, is fixed to this casting; the outer ring is the one which wants to rotate, but it being prevented from doing so by some obstruction. Rem...
by KurtM
Fri Aug 14, 2020 9:56 pm
Forum: Microscopy accessories
Topic: Zeiss Rotating Stage - Need Help
Replies: 19
Views: 2409

Re: Zeiss Rotating Stage - Need Help

I have removed the brake, it isn't the problem. Dry lube is definitely not the problem -- this stage has been taken apart, cleaned, and re-lubed recently and there's ample evidence of it everywhere. The interface between the white and brass rings doesn't need any more oil, it already has too much if...
by KurtM
Fri Aug 14, 2020 8:49 pm
Forum: Microscopy accessories
Topic: Zeiss Rotating Stage - Need Help
Replies: 19
Views: 2409

Re: Zeiss Rotating Stage - Need Help

No, that's not it. In the picture below, I have removed the stage proper from its quick-release fixture -- which I should have done in the first place, my apologies, I've forgotten how all this stuff works. So ... There are now what appears to be three rings; the outer two are actually one assembly,...
by KurtM
Fri Aug 14, 2020 4:44 pm
Forum: Microscopy accessories
Topic: Zeiss Rotating Stage - Need Help
Replies: 19
Views: 2409

Zeiss Rotating Stage - Need Help

Greetings all: I just obtained another Zeiss rotating stage to replace the one I stole from my WL stand to graft onto my Olympus BHS BH-2. I didn't get an exact replacement, however; the 'new' one came from a 'Photomic', I am told. The problem is I cannot figure out how to get this one free to rotat...
by KurtM
Thu Aug 13, 2020 12:09 am
Forum: Pictures and Videos
Topic: Synedra fulgens
Replies: 8
Views: 1371

Re: Synedra fulgens

Nice girdle views! I believe the 'small triangular diatom' is of the genus Limorpha.
by KurtM
Fri Aug 07, 2020 6:41 pm
Forum: Specimens, samples and slides
Topic: Attempts at Diatom Arranging
Replies: 11
Views: 1825

Re: Attempts at Diatom Arranging

Doron & Bob: Although definitely a Pleurax fan, I'm not attempting to use it for this purpose. I have export version Naphrax from Brunel UK and Toluene for this work. However ... forum member keithstout and I have been discussing possibilities of modifying the Pleurax curing progression, and he is c...
by KurtM
Fri Aug 07, 2020 12:30 am
Forum: Specimens, samples and slides
Topic: Attempts at Diatom Arranging
Replies: 11
Views: 1825

Attempts at Diatom Arranging

Greetings, all: One of the things I have been dabbling around with off and on for the past few years is becoming proficient at micromanipulating diatoms, for the purpose of making strews that are free of detritus, creating type slides, and possibly arranged slides. A few days ago I was practicing mo...