Search found 203 matches

by Chris Dee
Sat Jan 09, 2021 12:35 am
Forum: My microscope
Topic: Deleted
Replies: 9
Views: 417

Re: The wisest way to buy a microscope

Love it when spammers get backed into a corner. They get all hissy like a cat caught stealing the Sunday roast :D I own an Apex badged Chinascope model that is still being sold under various brands in the £400-500 bracket. That had a QC sticker on it, the mains earth wire wasn't even connected. It's...
by Chris Dee
Thu Dec 17, 2020 10:27 am
Forum: Illumination Techniques
Topic: Dodt gradient contrast
Replies: 36
Views: 3367

Re: Dodt gradient contrast

I needed coffee just to focus on the web page :D Looks like interesting, but like Hans I'm struggling to see the difference from a gradient NDF (or one laser printed on acetate).
by Chris Dee
Wed Dec 09, 2020 4:29 pm
Forum: Beginner's corner
Topic: Is this normal?
Replies: 34
Views: 2463

Re: Is this normal?

Definitely not normal, and if that passed QC it says a lot about the manufacturer..
by Chris Dee
Wed Dec 09, 2020 10:55 am
Forum: Pictures and Videos
Topic: Fruit fly larvae
Replies: 10
Views: 812

Re: Fruit fly larvae

Excellent image and video Saul, love the work you've done on your setup, impressive.
by Chris Dee
Wed Dec 09, 2020 10:50 am
Forum: Specimens, samples and slides
Topic: Experiments with botanic stains
Replies: 10
Views: 702

Re: Experiments with botanic stains

Nice experimental stain work Bob. Thanks for sharing.
by Chris Dee
Wed Dec 09, 2020 10:43 am
Forum: Pictures and Videos
Topic: Rotifer attempts GBH on Copepod nauplius !
Replies: 7
Views: 719

Re: Rotifer attempts GBH on Copepod napaulis !

Nice video SWmicro. Copepods can be frustrating to chase ;)
by Chris Dee
Wed Dec 09, 2020 10:33 am
Forum: Identification help
Topic: Mystery Dark Objects
Replies: 8
Views: 830

Re: Mystery Dark Objects

To me it looks like a chlamydospore sack, common to some species of fungal mycelia.
by Chris Dee
Tue Dec 01, 2020 11:16 am
Forum: Pictures and Videos
Topic: Parameciums having dinner
Replies: 5
Views: 277

Re: Parameciums having dinner

Well done, love the restaurant music :D
by Chris Dee
Tue Dec 01, 2020 11:12 am
Forum: Pictures and Videos
Topic: Rotifers in DF
Replies: 6
Views: 395

Re: Rotifers in DF

Well done. Really like the firsts one, excellent contrast.
by Chris Dee
Tue Dec 01, 2020 11:09 am
Forum: Pictures and Videos
Topic: Litonotus dividing
Replies: 5
Views: 270

Re: Litonotus dividing

Nice catch, well done.
by Chris Dee
Tue Dec 01, 2020 11:05 am
Forum: Pictures and Videos
Topic: Arcdella gibbosa?
Replies: 13
Views: 517

Re: Arcdella gibbosa?

Great work janvangastel, very nice to see a live sample, good illumination too. 8-)
by Chris Dee
Tue Dec 01, 2020 10:58 am
Forum: Beginner's corner
Topic: Cleaning slides lifehack
Replies: 7
Views: 532

Re: Cleaning slides lifehack

I 3D printed a holder for 10 slides + covers that fits into a small 850ml 35w ultrasonic cleaner. One 8min run in dilute detergent (biological washer liquid), rinse under warm tap, spray rinse with distilled water then stand to dry. Best method I've found thus far that doesn't involve solvents etc. ...
by Chris Dee
Fri Nov 27, 2020 4:17 pm
Forum: Pictures and Videos
Topic: Stentor Explodes
Replies: 1
Views: 291

Re: Stentor Explodes

Unfortunate but very interesting to watch. Nice catch Plasmid.
by Chris Dee
Fri Nov 27, 2020 4:11 pm
Forum: Pictures and Videos
Topic: Leaf casts
Replies: 10
Views: 571

Re: Leaf casts

Fascinating. Nice work Manfred.
by Chris Dee
Fri Nov 27, 2020 3:37 pm
Forum: Pictures and Videos
Topic: Pond Life!
Replies: 14
Views: 1127

Re: Pond Life!

Nice work Louise, keep at it. The filaments with the granules look like Beggiatoa, a filamentous proteobacteria. The granule density varies somewhat and is likely to be sulphur. They use inorganic elements to synthesise carbohydrates, and sulphur is plentiful in semi stagnant ponds. Their rotation c...
by Chris Dee
Sun Nov 22, 2020 7:21 am
Forum: Microscopy accessories
Topic: Cotton rolls for lens cleaning?
Replies: 10
Views: 4770

Re: Cotton rolls for lens cleaning?

Same method for me as my camera lenses. Foam buds with isopropanol, repeated with distilled water, dried with a makeshift blower (a large hand-pumped plant sprayer). Trick is not to over-wet, anything with fibres is a no for me.
by Chris Dee
Fri Nov 20, 2020 9:29 pm
Forum: Pictures and Videos
Topic: Rotifer (Dissotrocha macrostyla)
Replies: 7
Views: 1368

Re: Rotifer (Dissotrocha macrostyla)

One minute you're just swimming around minding your own business and suddenly you're sucked in by a giant eating machine! Great video. Can I ask what camera you use? Louise This was filmed at 30fps with a Canon 550d through an Olympus NFK 3.3x photoeyepiece Louise. I also use a Canon M50 occasional...
by Chris Dee
Thu Nov 19, 2020 10:05 pm
Forum: Pictures and Videos
Topic: Rotifer (Dissotrocha macrostyla)
Replies: 7
Views: 1368

Re: Rotifer (Dissotrocha macrostyla)

Thanks Hans. Yes chasing rotifers around is like herding cats :D
by Chris Dee
Thu Nov 19, 2020 10:03 pm
Forum: Pictures and Videos
Topic: Can anyone ID this?
Replies: 8
Views: 1229

Re: Can anyone ID this?

More scouring of books and online has yielded nothing. Chalking this one down as "Fungal?.. Weird, but move along"
by Chris Dee
Thu Nov 19, 2020 9:49 pm
Forum: Pictures and Videos
Topic: Micro paisaje (vidrio mal molido). 100x Rheinberg
Replies: 4
Views: 688

Re: Micro paisaje (vidrio mal molido). 100x Rheinberg

Lovely images adomacro, you obviously put a lot of time and effort into your work.
by Chris Dee
Thu Nov 19, 2020 9:36 pm
Forum: Microscopes and optics
Topic: Issue with 2x and 1x objectives
Replies: 6
Views: 888

Re: Issue with 2x and 1x objectives

I recently ran into this same problem. I bought a second Vickers M17 for the 1.25na achro' oil condenser and a second objective changer. The condenser is great but would not provide even full-field illumination for objectives below 6.3x and required swapping to to the original fip-top condenser for ...
by Chris Dee
Tue Nov 17, 2020 7:09 pm
Forum: Pictures and Videos
Topic: Can anyone ID this?
Replies: 8
Views: 1229

Re: Can anyone ID this?

:D
by Chris Dee
Tue Nov 17, 2020 6:58 pm
Forum: Pictures and Videos
Topic: Bacteria Creature?
Replies: 2
Views: 495

Re: Bacteria Creature?

Not sure, definitely some bacteria present. Detritus and brownian motion?
by Chris Dee
Tue Nov 17, 2020 6:54 pm
Forum: Pictures and Videos
Topic: Rotifer (Dissotrocha macrostyla)
Replies: 7
Views: 1368

Rotifer (Dissotrocha macrostyla)

A new rotifer found in the microbe aquarium. Powerful feeding currents. In the latter half of the video you can see the dorsal antenna being used to sense nearby dangers.
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Microscope: Vickers M17 trinocular
Objectives used:
Zeiss Jena 6.3x Apo
Zeiss neofluar 16x
Zeiss Jena 25x Apo
by Chris Dee
Tue Nov 17, 2020 5:58 pm
Forum: Pictures and Videos
Topic: Can anyone ID this?
Replies: 8
Views: 1229

Re: Can anyone ID this?

Seems a bit too uniform and in one plane for it to be fungal, can't rule it out though.
by Chris Dee
Tue Nov 17, 2020 3:28 pm
Forum: Pictures and Videos
Topic: Can anyone ID this?
Replies: 8
Views: 1229

Can anyone ID this?

Not sure if this is a worm or nematode (other?), but unable to find anything similar on the web. Lives life at full throttle, observed for some time but wouldn't stay still for a decent shot. Odd behaviour, freed itself from this clump of detritus only to get entangled in another, and another, and s...
by Chris Dee
Mon Nov 16, 2020 12:52 pm
Forum: Pictures and Videos
Topic: Amoeba video processing
Replies: 9
Views: 1113

Re: Amoeba video processing

Shotcut for me also. Nice work Hans, hopefully you can cure the banding issue.
by Chris Dee
Mon Nov 16, 2020 12:41 pm
Forum: Pictures and Videos
Topic: Brown Hydra & unfortunate Ciliate
Replies: 7
Views: 973

Re: Brown Hydra & unfortunate Ciliate

DonSchaeffer wrote:
Sun Nov 15, 2020 11:31 pm
How are they eaten? Where is the "mouth?"
Hydra are essentially a hollow tube (blind gut), the feeding entrance is in the middle of the tentacle cluster. They can engulf large prey in short order. Here is a good video (not mine) of one in action: https://youtu.be/SS_HYY97ehw
by Chris Dee
Sun Nov 15, 2020 8:51 pm
Forum: Home-made microscope adaptations
Topic: Algae scraper for flat sided tanks
Replies: 1
Views: 529

Re: Algae scraper for flat sided tanks

Give it a while, thingiverse is slow to display uploaded designs these days :roll:
by Chris Dee
Sun Nov 15, 2020 8:41 pm
Forum: Home-made microscope adaptations
Topic: Algae scraper for flat sided tanks
Replies: 1
Views: 529

Algae scraper for flat sided tanks

Scraper for collecting algae samples from flat sided aquariums and culture vessels. Useful for collecting encrusted flora/fauna for study. Slide the scraper vertically up the tank side with firm pressure (scoop section downmost), scrapings collect in scoop and can be rinsed out for examination. Made...