Search found 157 matches

by Chris Dee
Sun Oct 25, 2020 6:05 am
Forum: Pictures and Videos
Topic: Oligochaeta - Dero digitata worms
Replies: 6
Views: 96

Re: Oligochaeta - Dero digitata worms

Nice detail on the mouthparts Bob, not easy chasing those around under the scope.
by Chris Dee
Sun Oct 25, 2020 5:56 am
Forum: Pictures and Videos
Topic: A couple of fossil diatoms
Replies: 14
Views: 270

Re: A couple of fossil diatoms

Like how you've highlighted the geometry of the second one Wes, nice work as always.
by Chris Dee
Sun Oct 25, 2020 5:51 am
Forum: Pictures and Videos
Topic: First life found under a microscope
Replies: 7
Views: 142

Re: First life found under a microscope

Keep at it you'll soon get into the swing of identifying stuff you see. This is a good reference to get you underway: http://www.plingfactory.de/Science/GruK ... e-TL3.html
by Chris Dee
Sun Oct 25, 2020 5:38 am
Forum: Sandbox
Topic: Hunting for Desmids
Replies: 2
Views: 69

Re: Hunting for Desmids

If you can find an area with floating pondweed, algae, or submerged plants, try grabbing some and gently squeezing the water out into a collection vessel. You could do this at several collection sites and keep notes of what you find at each. Should also aid in hunting other microbes for future study...
by Chris Dee
Sat Oct 24, 2020 11:21 am
Forum: Pictures and Videos
Topic: How to troll a rotifer
Replies: 3
Views: 80

How to troll a rotifer

A rotifer (Dissotrocha aculeata) being trolled by a nematode. I'm sure it wasn't the nematodes intention, but comical to observe ;)
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by Chris Dee
Mon Oct 19, 2020 12:39 pm
Forum: Microscopes and optics
Topic: Best bang for the buck Zeiss Objectives?
Replies: 6
Views: 338

Re: Best bang for the buck Zeiss Objectives?

I use Zeiss Neofluars (16x and 40x) and have been very happy with them. The photo eyepiece I use for video/photo crops the view significantly so planarity is not an issue for that. Through the binocular eyepieces field curvature is only noticeable at the edges of the FOV which I seldom pay attention...
by Chris Dee
Sun Oct 18, 2020 12:16 pm
Forum: Miscellaneous
Topic: Microbe aquarium
Replies: 17
Views: 4484

Re: Microbe aquarium

Yes, not pretty to look at but the critters love it. Btw, leave any top-up water in a jug next to the tank for a few hours, that way It'll be at the same temp. Good luck with the project, keep us updated grahamma.
by Chris Dee
Sat Oct 17, 2020 3:06 pm
Forum: Pictures and Videos
Topic: Some more crystals
Replies: 5
Views: 263

Re: Some more crystals

Cheers all, working on a flash illumination half mirror rig so hopefully future attempts will be a tad crisper.
Objectives used:
Zeiss Jenna APO 6.3x for shot 2
Zeiss Neofluar 16x for 1 & 4
Zeiss Jenna ApoPlan 25x for 3rd
by Chris Dee
Sat Oct 17, 2020 12:27 pm
Forum: Pictures and Videos
Topic: Some more crystals
Replies: 5
Views: 263

Some more crystals

Citric Acid and Sodium Metabisulphite. No coverslip, air dried, 70/30 water/methanol base.
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by Chris Dee
Sat Oct 17, 2020 11:43 am
Forum: Miscellaneous
Topic: Microbe aquarium
Replies: 17
Views: 4484

Re: Microbe aquarium

--snip-- I saw someone post about a small aquarium with a bubbler running a few hours and occasional fish food additions. Probably my post grahamma. The tank is 18 months old now and doing well. Tank contents all came from lake/pond (silt, root mass. stones, plants, water squeezed from aquatic plan...
by Chris Dee
Tue Oct 13, 2020 6:26 pm
Forum: Pictures and Videos
Topic: Homalozoon vermiculare hunting
Replies: 7
Views: 229

Re: Homalozoon vermiculare hunting

Excellent catch Michael, interesting to watch it strip the contents of the ciliate, never seen that before. Good work.
by Chris Dee
Tue Oct 13, 2020 6:14 pm
Forum: Beginner's corner
Topic: 60x objective for swift sw380T
Replies: 12
Views: 552

Re: 60x objective for swift sw380T

All So learning my new scope I'm deathly afraid of using the 100x not wanting to mess with oil (irony of all things considering where I work lol). I noticed everyone mentioning changing the 100x with a 60x objective so my question to other sw380 users is which 60x is Parfocal with the existing set ...
by Chris Dee
Tue Oct 13, 2020 5:46 pm
Forum: Pictures and Videos
Topic: Dead Pediastrum?
Replies: 2
Views: 74

Re: Dead Pediastrum?

Thanks for the pyrenoid remnants info' Wes. No Idea about the pore-like structures (pits?), wish I'd took a better image now.
by Chris Dee
Tue Oct 13, 2020 4:48 pm
Forum: Pictures and Videos
Topic: Dead Pediastrum?
Replies: 2
Views: 74

Dead Pediastrum?

Devoid of life but I'm curious about the oval structures present in the dead cell walls. Cell wall ruptures or something else? Image snapped at high ISO in video mode, sorry for the graininess. Thoughts?
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by Chris Dee
Sun Oct 11, 2020 3:36 pm
Forum: Pictures and Videos
Topic: Filose amoeba
Replies: 8
Views: 218

Re: Filose amoeba

Nice catch and video Wes.
by Chris Dee
Sun Oct 04, 2020 4:17 pm
Forum: Home-made microscope adaptations
Topic: DIY plan objectives
Replies: 7
Views: 396

Re: DIY plan objectives

Nice printer! I can only imagine how many editing/printing cycles you went through. I think my humble CR-10 or Ender 2 would flatly refuse those threads. :) Thanks for the further info' and well done once again.
by Chris Dee
Sun Oct 04, 2020 3:06 pm
Forum: Home-made microscope adaptations
Topic: DIY plan objectives
Replies: 7
Views: 396

Re: DIY plan objectives

Fantastic design and print work patta. What printer/nozzle dia'/layer height did you use?
by Chris Dee
Tue Sep 29, 2020 4:34 pm
Forum: Microscopes and optics
Topic: What’s in the box?
Replies: 10
Views: 462

Re: What’s in the box?

Circular polarising stage?
by Chris Dee
Wed Sep 16, 2020 9:23 pm
Forum: Miscellaneous
Topic: Stentor Culturing Tips?
Replies: 4
Views: 254

Re: Stentor Culturing Tips?

My critter tank is full of them. Nothing more than lake mud with some root mass, rocks, pond weed, and lake water all collected from weedy margins. Fed with a pinch of fish food once a week. A large wide-mouth jar should suffice. No direct sunlight.
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by Chris Dee
Thu Jul 02, 2020 7:33 pm
Forum: Pictures and Videos
Topic: Ascorbic Acid crystals
Replies: 2
Views: 549

Ascorbic Acid crystals

Ascorbic acid under polar illumination. Slides produced both with open evaporation of a saturated solution, and heat melted under a cover slip. Heat needs to be applied gradually when melting powdered ascorbic acid as it quickly decomposes if applied too rapidly. Crystals can take up to a week to fu...
by Chris Dee
Tue Jun 16, 2020 7:35 pm
Forum: Camera systems and imaging
Topic: battery adapter
Replies: 51
Views: 4735

Re: battery adapter

75RR the likely origin of this is your monitor's internal power supply. In order to achieve the voltages and switching speed needed the internal PSU has switching transformers which convert both voltage and frequency. If not properly filtered or the power supply is failing, high voltage, high frequ...
by Chris Dee
Tue Jun 16, 2020 3:46 pm
Forum: Camera systems and imaging
Topic: battery adapter
Replies: 51
Views: 4735

Re: battery adapter

75RR the likely origin of this is your monitor's internal power supply. In order to achieve the voltages and switching speed needed the internal PSU has switching transformers which convert both voltage and frequency. If not properly filtered or the power supply is failing, high voltage, high freque...
by Chris Dee
Sun May 24, 2020 7:28 am
Forum: Pictures and Videos
Topic: Menthol crystals
Replies: 3
Views: 314

Re: Menthol crystals

Menthol is a bit slower to form crystals than others I've tried 75RR. The uncovered samples are the quickest and can be observed growing but quite slowly. The covered samples are very slow to crystallise, this is day 2 and have only progressed marginally since the top image was taken.
by Chris Dee
Sun May 24, 2020 5:37 am
Forum: Pictures and Videos
Topic: Menthol crystals
Replies: 3
Views: 314

Menthol crystals

1st pic unmodified polarised illumination. Menthol dissolved in ethanol, a drop placed on slide and coverslip added. Crystals have formed around the edges of the coverslip and are now beginning to extend under the coverslip after 24hrs. This is a shot of that progression, I hope more will form in th...
by Chris Dee
Sun May 24, 2020 5:14 am
Forum: Pictures and Videos
Topic: Entomoneis alata
Replies: 12
Views: 917

Re: Entomoneis alata

Lovely detail and colours.
by Chris Dee
Sun May 24, 2020 5:12 am
Forum: Pictures and Videos
Topic: Hungry fella
Replies: 5
Views: 460

Re: Hungry fella

What an odd looking critter :) ID?
by Chris Dee
Fri May 22, 2020 4:20 pm
Forum: Pictures and Videos
Topic: Citric Acid
Replies: 1
Views: 272

Citric Acid

Dissolved in isopropyl alcohol. Polarised illumination using cheap plastic film for the upper filter, and a linear camera lens filter over the illuminator.
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Objective: Zeiss Jena 6.3x apo
Microscope: Vickers M17
NFK 3.3x photo eyepiece
by Chris Dee
Fri May 22, 2020 4:09 pm
Forum: Pictures and Videos
Topic: Vorticella
Replies: 7
Views: 643

Re: Vorticella

Nice work, thanks for sharing.
by Chris Dee
Wed May 13, 2020 2:43 pm
Forum: Microscopes and optics
Topic: De-doming (shaving) LED's
Replies: 7
Views: 965

Re: De-doming (shaving) LED's

Yes Bob this mod would have little benefit in illumination systems with a fixed diffuser in the light path, possibly a marginal increase in brightness. The example above is also a worst case scenario for the (full Kohler) illumination on my microscope, normally the diffuser would be deployed at 4x a...
by Chris Dee
Mon May 11, 2020 3:30 pm
Forum: Specimens, samples and slides
Topic: My Arachnoidiscus
Replies: 9
Views: 1615

Re: My Arachnoidiscus

Lovely oblique/brightfield images. I know DIC is often the desired method for these subjects, but I still much prefer this type of shot. Thanks for sharing.