Search found 8207 matches

by 75RR
Sat Oct 16, 2021 9:43 am
Forum: Pictures and Videos
Topic: Microscopy on psychedelics
Replies: 4
Views: 1480

Re: Microscopy on psychedelics

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That would be Phase. For best results you will need to align the condenser annulus with the objecive ring using a Phase telescope.

See interactive tutorial: https://www.microscopyu.com/tutorials/p ... -alignment
by 75RR
Fri Oct 15, 2021 5:45 pm
Forum: Pictures and Videos
Topic: Small and fascinating microbe
Replies: 4
Views: 1444

Re: Small and fascinating microbe

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Looks like it might be a Green Hydra - good catch!
by 75RR
Fri Oct 15, 2021 1:27 pm
Forum: Miscellaneous
Topic: Differential Interference Contrast
Replies: 3
Views: 1669

Differential Interference Contrast

. It has occurred to me that while many members have experience in illumination techniques such as Darkfield and Rheinberg, and some have experience in Phase (Phase Contrast) and COL (Circular Oblique Lighting), there are less who have experience in DIC (Differential Interference Contrast) I therefo...
by 75RR
Thu Oct 14, 2021 8:41 am
Forum: Microscopes and optics
Topic: Nikon Infinity 200 and Zeiss Infinity 160 Work Just fine on Vintage 160
Replies: 15
Views: 4648

Re: Nikon Infinity 200 and Zeiss Infinity 160 Work Just fine on Vintage 160

The Axio is an infinity scope by design. When you use an Optvar with it the tube lens moves to the base of the Optvar from the base of the Head. When I take out the optvar, I am left with a scope that is a 160mm "finite" scope. It likes vintage Neofluars, etc. It also likes infinity objectives, fro...
by 75RR
Thu Oct 14, 2021 8:34 am
Forum: Illumination Techniques
Topic: What is the illumination technique Microbehunter used in his last video?
Replies: 31
Views: 8221

Re: What is the illumination technique Microbehunter used in his last video?

Phase contrast is a powerful technique in the right hands. I wonder if part of the popularity of DIC is just that expensive equipment can be substituted for some of the artistry required to sap the most out of phase. I don't think DIC is popular in the sense that it is common. I do think that to ge...
by 75RR
Tue Oct 12, 2021 3:37 pm
Forum: Illumination Techniques
Topic: What is the illumination technique Microbehunter used in his last video?
Replies: 31
Views: 8221

Re: What is the illumination technique Microbehunter used in his last video?

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This is from the comments section of the video, though I am not sure what to make of it.
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by 75RR
Tue Oct 12, 2021 1:54 pm
Forum: Microscopy accessories
Topic: Best practices and construction for dust covers
Replies: 39
Views: 28120

Re: Best practices and construction for dust covers

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I am still using cotton pillow cases - one inside the other ... and yes they most likely could do with a wash about now!
by 75RR
Mon Oct 11, 2021 9:49 am
Forum: Microscopes and optics
Topic: Pocket RMS microscope with condenser, darkfield, schlieren and 3D printable
Replies: 8
Views: 2730

Re: Pocket RMS microscope with condenser, darkfield, schlieren and 3D printable

. Perhaps a restatement of the limitations that a FMH (Field Microscope Hiking) necessarily has, due to size and weight limits, as well as the operational constraint of its use in the field might be helpful. As would the reason one might want to use a microscope in the field other than confirming th...
by 75RR
Sun Oct 10, 2021 7:54 pm
Forum: Microscopes and optics
Topic: Pocket RMS microscope with condenser, darkfield, schlieren and 3D printable
Replies: 8
Views: 2730

Re: Pocket RMS microscope with condenser, darkfield, schlieren and 3D printable

apochronaut wrote:
Sun Oct 10, 2021 7:32 pm
It's hardly pocket, is it?
I would add that it does not look particularly sturdy either. Not what I would consider a Field microscope.
by 75RR
Sun Oct 10, 2021 9:54 am
Forum: Camera systems and imaging
Topic: Time to ask for more help.
Replies: 10
Views: 3588

Re: Time to ask for more help.

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There you go.

https://krebsmicro.com/

https://www.quekett.org/resources/advan ... icrography

Do note that vibration is one of the big bugbears of photomicrography, so you may want to look into one with Electronic Front-Curtain Shutter.
by 75RR
Sat Oct 09, 2021 6:28 pm
Forum: Introduce yourself
Topic: Greetings from Ireland
Replies: 2
Views: 1977

Re: Greetings from Ireland

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Hi PassengerIRL, welcome.

Do tell us about your microscope and do post photos of it in the My Microscope section of the forum.
by 75RR
Sat Oct 09, 2021 9:16 am
Forum: Miscellaneous
Topic: salt crystals forming in real time
Replies: 2
Views: 1305

salt crystals forming in real time

first-ever atomic resolution video of salt crystals forming in real time

https://phys.org/news/2021-01-first-eve ... -salt.html
by 75RR
Thu Oct 07, 2021 9:58 pm
Forum: Pictures and Videos
Topic: Geodian cydonium spicule
Replies: 3
Views: 1341

Re: Geodian cydonium spicule

Wonderful image!
by 75RR
Thu Oct 07, 2021 12:39 pm
Forum: Morphology and Behavior
Topic: I always thought of diatoms as pretty algae lying around photosynthesizing
Replies: 12
Views: 7856

Re: I always thought of diatoms as pretty algae lying around photosynthesizing

smollerthings wrote:
Thu Oct 07, 2021 11:35 am
But they are scavengers too?
Not to my knowledge. They are autotrophic; they are however on a lot of menus!
by 75RR
Thu Oct 07, 2021 7:54 am
Forum: Pictures and Videos
Topic: Thuricola, full circle
Replies: 5
Views: 1707

Re: Thuricola, full circle

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Nice follow up!
by 75RR
Thu Oct 07, 2021 7:03 am
Forum: Pictures and Videos
Topic: Live diatom colonies from a bay of the baltic sea
Replies: 13
Views: 3635

Re: Live diatom colonies from a bay of the baltic sea

MicroBob wrote:
Wed Oct 06, 2021 7:41 pm
The FM 31's advantage of it's small size is turned into avdisadvantage when you have to bring your physio therapist...
Had not thought of the ergonomics of using the swift FM 31, good point!

Great catches!
by 75RR
Wed Oct 06, 2021 7:02 pm
Forum: Pictures and Videos
Topic: Triceratium duplicatum
Replies: 10
Views: 2753

Re: Triceratium duplicatum

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Many thanks Francisco and MicroBob, and thanks again for the slide - I seem to find something new every time I look at it!
by 75RR
Tue Oct 05, 2021 9:31 pm
Forum: Pictures and Videos
Topic: Triceratium duplicatum
Replies: 10
Views: 2753

Re: Triceratium duplicatum

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Many thanks ImperatorRex and Javier
by 75RR
Tue Oct 05, 2021 2:35 pm
Forum: Pictures and Videos
Topic: Triceratium duplicatum
Replies: 10
Views: 2753

Re: Triceratium duplicatum

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Thanks Wes, there were 32 images in it.
by 75RR
Tue Oct 05, 2021 11:26 am
Forum: Pictures and Videos
Topic: Triceratium duplicatum
Replies: 10
Views: 2753

Re: Triceratium duplicatum

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Thanks Hobbyst46

As usual happy to amend if anyone thinks ID is not correct.
.
by 75RR
Tue Oct 05, 2021 10:25 am
Forum: Pictures and Videos
Topic: Triceratium duplicatum
Replies: 10
Views: 2753

Triceratium duplicatum

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Another go at the 'stalingrad' slide kindly sent by MicroBob

Zeiss Planapo 63x/1.4, DIC, Sides are 80µm, stacked in Photoshop

.
by 75RR
Mon Oct 04, 2021 6:43 pm
Forum: Pictures and Videos
Topic: 2 stentors in a roomate situation
Replies: 8
Views: 2382

Re: 2 stentors in a roomate situation

smollerthings wrote:
Mon Oct 04, 2021 6:26 pm
Looks like it, but i don't see one that has a double head?
https://www.nies.go.jp/chiiki1/protoz/m ... ginico.htm
by 75RR
Mon Oct 04, 2021 4:28 pm
Forum: Pictures and Videos
Topic: 2 stentors in a roomate situation
Replies: 8
Views: 2382

Re: 2 stentors in a roomate situation

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I would go with one of the Vaginicolidae
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Image
by 75RR
Sun Oct 03, 2021 9:44 pm
Forum: Pictures and Videos
Topic: Crude, but learning.
Replies: 9
Views: 2210

Re: Crude, but learning.

8 and 14 minutes is a lot. You might consider editing them down to just the highlights

Screen shot
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by 75RR
Sun Oct 03, 2021 5:30 pm
Forum: Pictures and Videos
Topic: Carchesia: the exodus (actually not carchesium, vorticella)
Replies: 15
Views: 3930

Re: Carchesia: the exodus

Very nice!
by 75RR
Fri Oct 01, 2021 5:38 pm
Forum: Specimens, samples and slides
Topic: I'd like some advice
Replies: 7
Views: 2694

Re: I'd like some advice

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No doubt some more knowledgeable members will chip in soon, but in the meantime you might want to look into Walter Dioni's articles.

I believe some of them cover your area of interest.

https://www.microscopy-uk.org.uk/mag/wd-articles.html
by 75RR
Thu Sep 30, 2021 6:32 pm
Forum: Pictures and Videos
Topic: Hellin fossil diatoms. Cyclotella and others.
Replies: 4
Views: 1932

Re: Hellin fossil diatoms. Cyclotella and others.

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Nothing like a SEM to highlight both the beauty and complexity of Diatoms.

Looking forward to your next images
by 75RR
Thu Sep 30, 2021 11:49 am
Forum: Introduce yourself
Topic: Hello from Spain.
Replies: 10
Views: 3657

Re: Hello from Spain.

Welcome Gmeiro.

SEM in your basement! I think that is amazing. Very glad you have chosen Diatoms as your subject.

Fascinating image
by 75RR
Thu Sep 30, 2021 8:10 am
Forum: Pictures and Videos
Topic: Image quality comparisons of available microscope cameras
Replies: 12
Views: 3734

Re: Image quality comparisons of available microscope cameras

Charles Krebs has a very useful spreadsheet on this on his homepage: http://krebsmicro.com/relayDSLR/relay_micro.xls Put in the magnification, NA and relay optic magnification, and you'll get the resolution needed to sample 2, 2.5, 3.0 or 3.5 pixels per resolvable feature. In practice, it definitel...
by 75RR
Wed Sep 29, 2021 7:03 pm
Forum: Identification help
Topic: possibly pollen from water plant?
Replies: 1
Views: 1046

Re: possibly pollen from water plant?

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Don't think many people will be comfortable downloading a .zip file from an unknown source

You can link to an external hosting site (such as imgur for example) and use the insert image toggle in the toolbar
or
just drag and drop ... Max image size 1024 x 1024 and 512KB