Search found 1638 matches

by KurtM
Fri Apr 09, 2021 12:41 am
Forum: Pictures and Videos
Topic: Melosira nummuloides
Replies: 5
Views: 149

Re: Melosira nummuloides

Oooooh, very nice - a beautiful diatom that's a real challenge to get good images of!
by KurtM
Wed Mar 24, 2021 12:21 am
Forum: Pictures and Videos
Topic: Amphipleura pellucida diatom
Replies: 7
Views: 224

Re: Amphipleura pellucida diatom

Yep - looks pretty convincing to me, I'd be proud if it were mine! Well done sir!
by KurtM
Tue Mar 09, 2021 7:03 pm
Forum: Pictures and Videos
Topic: Rockport, Texas Diatoms
Replies: 19
Views: 623

Re: Rockport, Texas Diatoms

Thanks again, all! Your kind words are truly humbling... In other news, what appeared to be filamentous algae has been revealed under the microscope to be vast numbers of diatoms inhabiting mucilaginous tubes formed by the cells of the colony, reminding millions of urban freeways during rush hour. B...
by KurtM
Mon Mar 08, 2021 10:14 pm
Forum: Pictures and Videos
Topic: Rockport, Texas Diatoms
Replies: 19
Views: 623

Re: Rockport, Texas Diatoms

Thank you all very much, the kind comments are especially appreciated coming from this particular group. 75RR, I have to say that you and Mr Krebs are my chief sources of inspiration, and I thank you both especially. Fan: My apologies for being unresponsive lately, but there have been family calamit...
by KurtM
Mon Mar 08, 2021 1:35 am
Forum: Pictures and Videos
Topic: Rockport, Texas Diatoms
Replies: 19
Views: 623

Rockport, Texas Diatoms

I was obliged to spend a week in the seaside town of Rockport, Texas recently, attending to some business that wasn't exactly pleasant. But making the best of the situation, I took time during the last day to collect some samples hoping for some great marine diatoms. I was not disappointed. I collec...
by KurtM
Tue Mar 02, 2021 12:48 am
Forum: For forum members who want to buy and sell equipment
Topic: WTB AO 10 illuminator mirror
Replies: 6
Views: 265

Re: WTB AO 10 illuminator mirror

I doubt you could find a replacement. When I had that problem - mine had lost its silvering, which all first surface mirrors do eventually - I searched for and purchased the thinnest first surface mirror I could find on eBay. It was thicker and far too large, but thickness doesn't matter as long as ...
by KurtM
Sun Feb 28, 2021 2:41 am
Forum: Pictures and Videos
Topic: Diatom: Gomphonema capitatum
Replies: 8
Views: 397

Re: Diatom: Gomphonema capitatum

WOW - what a beautiful sample!! I was going to ask for a few words regarding where it came from - may I assume the final picture showed where you found it?
by KurtM
Fri Feb 26, 2021 4:36 am
Forum: Pictures and Videos
Topic: Pleurosigma and friend
Replies: 12
Views: 459

Re: Pleurosigma and friend

PeteM wrote:
Thu Feb 25, 2021 10:42 pm
That brought a grin. Very cool image.
Couldn't have said it better myself. 8-)
by KurtM
Thu Feb 25, 2021 5:10 am
Forum: Microscopes and optics
Topic: Olympus Splan Apo 100x 1.4NA +coverslip +iris - The Objective that Doesn't Exist?
Replies: 8
Views: 866

Re: Olympus Splan Apo 100x 1.4NA +coverslip +iris - The Objective that Doesn't Exist?

c-krebs wrote:
Thu May 21, 2020 8:33 pm
The first two images in this post are made with that objective in darkfield (with Zeiss oiled darkfield condenser).

viewtopic.php?f=6&t=3374&p=30211
Those two images are still right at the top of my all time favorite diatom pix.
by KurtM
Sat Feb 20, 2021 1:25 am
Forum: Specimens, samples and slides
Topic: Final Lichen Images - Apothecia!
Replies: 18
Views: 868

Re: Final Lichen Images - Apothecia!

John, your slide making is simply glorious!
by KurtM
Sat Feb 20, 2021 1:21 am
Forum: Collecting microscopes and slides
Topic: My Favorite Microscope Cleaning Pad
Replies: 10
Views: 612

Re: My Favorite Microscope Cleaning Pad

Kurt, I did a little "research", which means "Googling" at it appears that these little round make-up pads are an ubiquitous product, and are available at, for example, CVS rebranded a little. (This is all new to me, having never put on makeup. . .) Launching my own line of investigation I have mad...
by KurtM
Thu Feb 18, 2021 2:51 am
Forum: Collecting microscopes and slides
Topic: My Favorite Microscope Cleaning Pad
Replies: 10
Views: 612

Re: My Favorite Microscope Cleaning Pad

I love tips like this one, thanks for posting!

At the risk of sounding persnickety, however, WallyWorld is a colossal store that I seldom have reason to go to; so any hints as to what department these pads may be found in would be most appreciated.
by KurtM
Thu Feb 18, 2021 12:41 am
Forum: Pictures and Videos
Topic: Cladocera
Replies: 8
Views: 450

Re: Cladocera

Just absolutely wonderful, what a treat for the eyes!
by KurtM
Sun Feb 07, 2021 12:30 am
Forum: For forum members who want to buy and sell equipment
Topic: AO Model? I forget which one it s but it's for sale
Replies: 28
Views: 1860

Re: AO Model? I forget which one it s but it's for sale

KurtM wrote:
Sun Feb 07, 2021 12:27 am
The old Series 2 has a "horseshoe" type of foot, and the Series 4 a lamp built into the base, as you know, so this one's a mystery to me too. I hope Phil or Charles sees this and chimes in.
by KurtM
Sun Feb 07, 2021 12:27 am
Forum: For forum members who want to buy and sell equipment
Topic: AO Model? I forget which one it s but it's for sale
Replies: 28
Views: 1860

Re: AO Model? I forget which one it s but it's for sale

The old Series 2 has a horseshoe foot, and the Series 4 a lamp built into the base, as you know, so this one's a mystery to me too. I hope Phil or Charles sees this and chimes in.
by KurtM
Sat Jan 30, 2021 12:47 am
Forum: Pictures and Videos
Topic: Marine diatom
Replies: 7
Views: 851

Re: Marine diatom

Bravo!

Looks like a girdle view. Can you stir it up and see if we can get a valve view? (Maybe turn an ostracod loose in there, it worked for me once.)
by KurtM
Thu Jan 28, 2021 3:05 am
Forum: Pictures and Videos
Topic: Rotating Stage DIC Demonstration
Replies: 4
Views: 535

Re: Rotating Stage DIC Demonstration

Hey Bob, you bring up an excellent counter point, and that's that the rotating capability isn't beneficial to all subjects. Besides something like live protists, it's useless for centric (round, circular) diatom forms! In the meantime, the X-Y stage controls are ever so much more ergonomic on nonrot...
by KurtM
Wed Jan 27, 2021 6:47 pm
Forum: Pictures and Videos
Topic: Rotating Stage DIC Demonstration
Replies: 4
Views: 535

Rotating Stage DIC Demonstration

Back in July (2020) I submitted a thread showing how I grafted a Zeiss rotating stage onto my Olympus BH-2, see: http://www.microbehunter.com/microscopy-forum/viewtopic.php?f=24&t=9924&p=84494#p84494 A discussion followed as to why a rotating stage is wanted. The short answer is that a lot depends o...
by KurtM
Fri Jan 15, 2021 2:22 am
Forum: Sandbox
Topic: 100x oil vs. 100x dry objectives
Replies: 5
Views: 1262

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: 805

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: 1296

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: 1296

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: 1296

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: 1296

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: 1296

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: 1188

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: 1384

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: 1384

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.