Search found 57 matches

by clengman
Mon Mar 26, 2018 1:58 pm
Forum: Pictures and Videos
Topic: Stink bug hatching
Replies: 13
Views: 1222

Re: Stink bug hatching

Very Cool!
by clengman
Thu Mar 22, 2018 3:47 pm
Forum: Pictures and Videos
Topic: First Pic Post
Replies: 3
Views: 504

Re: First Pic Post

Thanks! It was kind of a happy accident. I was just searching through the chemical cabinet for substances with 1) low melting temps and 2) little toxicity. These are spherullites of niacinamide. I just put a little on a slide, covered with a coverslip, melted on a hot plate and let it recrystallize ...
by clengman
Thu Mar 22, 2018 1:55 am
Forum: Pictures and Videos
Topic: First Pic Post
Replies: 3
Views: 504

First Pic Post

I had a little downtime at work and was playing around a little. Got a couple pictures of the slide I made with my cell phone on the Fisher Micromaster I have at my bench. These were taken with the 10x objective through a 10x eyepiece. They are cropped to maybe 50% of the original field of view. The...
by clengman
Mon Mar 19, 2018 4:26 pm
Forum: Identification help
Topic: I was observing my cheek cells when I found this...
Replies: 5
Views: 1484

Re: I was observing my cheek cells when I found this...

THese came up in a quick search: https://www.the-scientist.com/?articles.view/articleNo/45153/title/The-Mycobiome/ https://www.popsci.com/how-human-gut-bacteria-deal-fermented-foods I wonder about the conclusion in the second article. Haven't looked at the primary source, but consumption of fermente...
by clengman
Mon Mar 19, 2018 1:37 pm
Forum: Identification help
Topic: I was observing my cheek cells when I found this...
Replies: 5
Views: 1484

Re: I was observing my cheek cells when I found this...

Yeast is EVERYWHERE! :) It's a big part of your native microbiome.
by clengman
Sun Mar 18, 2018 2:47 pm
Forum: Beginner's corner
Topic: Cover slip selection live subjects
Replies: 3
Views: 1010

Re: Cover slip selection live subjects

I like 24x50, #1.5 coverslips for live samples. Objectives sometimes have a marking with a recommended coverslip thickness. The most common is 0.17mm, roughly the thickness of a #1.5. If you are getting too much water flowing out around the edge of your slide, try starting with less water. You can a...
by clengman
Tue Mar 13, 2018 3:03 pm
Forum: Identification help
Topic: The very weirdest thing I've yet seen
Replies: 30
Views: 3131

Re: The very weirdest thing I've yet seen

You might want to try leaving them open, or capping them loosely or covering with clean fabric instead. They'll do better long term if there's some gas exchange.
by clengman
Mon Mar 12, 2018 5:11 pm
Forum: Identification help
Topic: The very weirdest thing I've yet seen
Replies: 30
Views: 3131

Re: The very weirdest thing I've yet seen

Could there be some kind of contaminant in the vessels you're using to collect your samples? Maybe some residual detergent or chlorinated water? Just a thought. I've been curious since your started posting your photos of water bears (which are very nice by the way!). I haven't seen a *lot* of them, ...
by clengman
Sun Mar 11, 2018 12:43 pm
Forum: Identification help
Topic: The very weirdest thing I've yet seen
Replies: 30
Views: 3131

Re: The very weirdest thing I've yet seen

Is it possible that the pond you took these from is brackish water and not fresh?
by clengman
Sat Mar 10, 2018 6:46 pm
Forum: Identification help
Topic: Can anyone tell me what this is?
Replies: 12
Views: 1615

Re: Can anyone tell me what this is?

Lilly Begonia wrote:
clengman wrote:Some kind of flatworm?
I don't think so... I've seen flatworms before, this is not like them. I really have no idea. Not a ciliate, no internal motion, I'm stumped.
There are many types of flatworms.
by clengman
Sat Mar 10, 2018 5:13 pm
Forum: Identification help
Topic: Can anyone tell me what this is?
Replies: 12
Views: 1615

Re: Can anyone tell me what this is?

Some kind of flatworm?
by clengman
Thu Mar 08, 2018 3:01 pm
Forum: Microscopes and optics
Topic: How sensitive is a Series 4 tube lens to decentering?
Replies: 0
Views: 1097

How sensitive is a Series 4 tube lens to decentering?

So I was working on cleaning dust from my AO Series 4. I cleaned the top and bottom surfaces of the correcting lens above the objective turret and then saw some dust on an interior surface of one of these lens elements. I disassembled this correcting lens as carefully as I could, removed the dust an...
by clengman
Wed Mar 07, 2018 8:37 pm
Forum: Specimens, samples and slides
Topic: Mounting medium for small invertebrates?
Replies: 2
Views: 1252

Re: Mounting medium for small invertebrates?

I'm seeing a lot of papers where it's been used for permanent mounts of oligochaetes and chironomid larvae. Wonder if it would work for relaxing and preserving tardigrades and rotifers...
by clengman
Wed Mar 07, 2018 8:01 pm
Forum: Specimens, samples and slides
Topic: Mounting medium for small invertebrates?
Replies: 2
Views: 1252

Mounting medium for small invertebrates?

I came across this on the EMS website today: CMCP Macroinvertebrate Mounting Medium: CMCP is a colorless, non resinous, water miscible mounting medium for permanent transparent mounts. This medium used like Canada Balsam, it can be used to mount almost any material, provided it is not stained, calci...
by clengman
Wed Mar 07, 2018 12:01 am
Forum: Pictures and Videos
Topic: A stylonchia
Replies: 6
Views: 655

Re: A stylonchia

Thanks! This is very helpful. And, it would appear, that I can't spell Stylonychia. They are really fun to watch; if I'm lucky I may be able to shoot some video of them some day soon. I'll need to wait for the ponds to thaw out first. They definitely are fun to watch! I saw a couple (maybe not the ...
by clengman
Fri Mar 02, 2018 12:23 pm
Forum: Beginner's corner
Topic: Mounting medium question
Replies: 17
Views: 2240

Re: Mounting medium question

https://www.bioquipinc.com/options/eupa ... ng-medium/

Looks like they sell to the public?
by clengman
Tue Feb 27, 2018 4:39 pm
Forum: Microscopes and optics
Topic: AO Spencer 146B?
Replies: 3
Views: 659

Re: AO Spencer 146B?

The reason I'm asking is that I see a 146B listed on ebay for a lower price than the 146s that are currently available. Just wondered if itwould work as well as a 146 for eyepiece projection in my series 4. Sounds like I should stick to a 146.
by clengman
Mon Feb 26, 2018 8:31 pm
Forum: Microscopes and optics
Topic: AO Spencer 146B?
Replies: 3
Views: 659

AO Spencer 146B?

Here's a quickie. What's the difference between AO Spencer WF eyepieces 146 and 146B? Anyone know? EDIT: I managed to find both eyepieces in the AO Spencer "Cycloptic" catalog on PS Neeley's page. Looks like the 146 came with the cycloptics with Apo objectives. (And with the series 4 with achromat o...
by clengman
Sat Feb 17, 2018 3:43 pm
Forum: Identification help
Topic: Illustrated rotifer ID key?
Replies: 3
Views: 844

Re: Illustrated rotifer ID key?

Thanks! Good stuff!
by clengman
Sat Feb 17, 2018 1:14 am
Forum: Identification help
Topic: Illustrated rotifer ID key?
Replies: 3
Views: 844

Illustrated rotifer ID key?

I'm just getting into home microscopy. I find rotifers fascinating, I'd like to learn more about them. Is there a good guide that might help me to ID them? Found one tonight in a sample of tree lichen. It was very active. It moved by the "inchworm" style of locomotion. It didn't swim at all. It had ...
by clengman
Tue Feb 13, 2018 3:44 pm
Forum: Microscopes and optics
Topic: AO Series 4 illuminator cleaning tips?
Replies: 22
Views: 2153

Re: AO Series 4 illuminator cleaning tips?

Now two people who are incompetent have been messing around with it. :) I'm trying to improve my competence, though. I had some time last night so I finally got around to opening up the illuminator to give it a good cleaning. The collector lens, the mirror and the window on the field diaphragm (insi...
by clengman
Mon Feb 12, 2018 5:48 pm
Forum: Microscopes and optics
Topic: AO Series 4 illuminator cleaning tips?
Replies: 22
Views: 2153

Re: AO Series 4 illuminator cleaning tips?

Found it. It was on the rear surface of the prism splitting light path to the two EP tubes. Unscrewed the front of the bino head from the body and found it right away.
by clengman
Mon Feb 12, 2018 5:38 pm
Forum: Microscopes and optics
Topic: AO Series 4 illuminator cleaning tips?
Replies: 22
Views: 2153

Re: AO Series 4 illuminator cleaning tips?

unusual to have a fingerprint on a prism surface inside the head. is it possible it is on the optical window, in the bottom of the head? Yes. I'm sure. Shining a light in through that window in the dovetail, I can see that both surfaces of the window are clean and the smudge is inside on the surfac...
by clengman
Mon Feb 12, 2018 5:00 pm
Forum: Microscopes and optics
Topic: AO Series 4 illuminator cleaning tips?
Replies: 22
Views: 2153

Re: AO Series 4 illuminator cleaning tips?

So, I got the spanner in the mail yesterday and have begun my program of dust hunting. I decided to start from the top down. EPs are pretty good now. I unscrewed the eyepiece tubes, cleaned the windows sealing the top of the bino head. Then I was dismayed to see that there is a big ol' fingerprint o...
by clengman
Mon Feb 12, 2018 1:47 pm
Forum: For forum members who want to buy and sell equipment
Topic: WTB: AO Spencer #1054 or #435?
Replies: 4
Views: 939

Re: WTB: AO Spencer #1054 or #435?

Thanks Apo. If you do manage to find something, let me know. I appreciate it.
by clengman
Sun Feb 11, 2018 5:09 am
Forum: For forum members who want to buy and sell equipment
Topic: WTB: AO Spencer #1054 or #435?
Replies: 4
Views: 939

Re: WTB: AO Spencer #1054

Thanks for the suggestions. 1054 is the one Apochronaut recommended that I try, if I could find one. I was just looking again at the at the series 2/4 catalog on PS neely's site. Looks like there was an EP, probably with the same optics as the #146, but with a focusing mechanism in the top, #435. I'...
by clengman
Sat Feb 10, 2018 4:22 am
Forum: Microscopes and optics
Topic: AO Series 4 illuminator cleaning tips?
Replies: 22
Views: 2153

Re: AO Series 4 illuminator cleaning tips?

I think I'll take a chance with the cheap spanner. It's in my budget right now. I'll figure something out if I have to lube the stage. Checked illuminator alignment. It seems like it's not great. When mirror is on plane, field iris image is shifted maybe a third of the way over towards the right of ...
by clengman
Sat Feb 10, 2018 1:01 am
Forum: For forum members who want to buy and sell equipment
Topic: WTB: AO Spencer #1054 or #435?
Replies: 4
Views: 939

WTB: AO Spencer #1054 or #435?

I'd like to find one of these spencer EPs with focusable top to use for eyepiece projection on my AO series 4. I don't know what the going price is, but if you have one you can let go, send me a message. I may be interested. Thanks!