Search found 7679 matches

by 75RR
Wed Apr 21, 2021 1:22 pm
Forum: My microscope
Topic: Parfocal shims
Replies: 4
Views: 192

Re: Parfocal shims

Thanks apochronaut, was just trying to keep things like postage and customs simple.

Have dropped the UK as an ebay shopping area - have heard lots of horror stories!

Will contact some EU dealers and see what they have.
by 75RR
Wed Apr 21, 2021 7:57 am
Forum: Pictures and Videos
Topic: is Peranema an amoeba ??
Replies: 3
Views: 61

Re: is Peranema an amoeba ??

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Wonder if what you have there is Hyperamoeba flagellata.

See link: https://www.researchgate.net/publicatio ... _apparatus
by 75RR
Wed Apr 21, 2021 7:28 am
Forum: My microscope
Topic: Parfocal shims
Replies: 4
Views: 192

Re: Parfocal shims

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Anyone know of a European supplier for objective shims?

Link above may charge European buyers in Euros but the company is in Philadelphia USA
by 75RR
Wed Apr 21, 2021 5:47 am
Forum: Resources (online, books etc.)
Topic: Micro algae database and image collection is online!
Replies: 4
Views: 117

Re: Micro algae database and image collection is online!

That is a great resource + beautiful images - thanks for the hard work!
by 75RR
Tue Apr 20, 2021 9:00 pm
Forum: Introduce yourself
Topic: Hello from a newcomer
Replies: 3
Views: 63

Re: Hello from a newcomer

Welcome BobHelmond, when you say new trinocular, new to you or new new?
by 75RR
Tue Apr 20, 2021 8:55 pm
Forum: Pictures and Videos
Topic: Actinocyclus subtilis Video
Replies: 3
Views: 55

Re: Actinocyclus subtilis Video

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Thanks Hobbyst46, not something I have managed to catch on video before as I usually start by pinning them down with the cover slip.
by 75RR
Tue Apr 20, 2021 8:42 pm
Forum: Pictures and Videos
Topic: Actinocyclus subtilis Video
Replies: 3
Views: 55

Actinocyclus subtilis Video

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Quite a lot of water between the diatom and the cover slip at times with consequently a drop in resolution
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by 75RR
Tue Apr 20, 2021 7:44 am
Forum: Identification help
Topic: Is this Amoeba Acella?
Replies: 4
Views: 86

Re: Is this Amoeba Acella?

Sometimes quite a lot of detail is needed for an ID

Are you familiar with Ferry's website Microworld?

https://www.arcella.nl/lobose-testate-amoebae/
by 75RR
Mon Apr 19, 2021 9:28 pm
Forum: Microscopes and optics
Topic: Is Slide thickness critical?
Replies: 5
Views: 92

Re: Is Slide thickness critical?

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Thanks Hobbyst46, looks like I am going to start measuring slide thickness as well now.

Found this in Light Microscopy by Murray and Robinow page 15
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by 75RR
Mon Apr 19, 2021 5:47 pm
Forum: Microscopes and optics
Topic: Is Slide thickness critical?
Replies: 5
Views: 92

Re: Is Slide thickness critical?

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Thanks

Found this in Fundamentals of light microscopy
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by 75RR
Mon Apr 19, 2021 4:53 pm
Forum: Microscopes and optics
Topic: Is Slide thickness critical?
Replies: 5
Views: 92

Is Slide thickness critical?

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It suddenly occurred to me that though I do take into account cover slip thickness I have not done the same with slide thickness.

Both my slide boxes have 1.0/1.2mm written on them. Though I have not measured the slides. Is there an ideal thickness?
by 75RR
Mon Apr 19, 2021 4:03 pm
Forum: Pictures and Videos
Topic: Actinocyclus octonarius
Replies: 9
Views: 183

Re: Actinocyclus octonarius

Thanks Wes An eyepiece is designed to send a virtual image that needs a lens (afocal or an eye) to convert it into a real one. By raising the eyepiece it produces instead a real image that can then be projected directly onto the camera sensor. This is to try to improve sharpness and detail (closer t...
by 75RR
Mon Apr 19, 2021 1:10 pm
Forum: Pictures and Videos
Topic: Actinocyclus octonarius
Replies: 9
Views: 183

Re: Actinocyclus octonarius

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Thanks MichaelG. and Hobbyst46
Is the 12.5X KPL raised above parfocality height ?
Is it a 12.5x -W high eyepoint KPL ?
Raised 10mm by the collar shown. High eyepoint (as indicated by the eyeglass pictogram) but believe field of view is 18mm
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by 75RR
Mon Apr 19, 2021 7:39 am
Forum: Beginner's corner
Topic: should i buy Bresser phase contrast series 57?
Replies: 5
Views: 207

Re: should i buy Bresser phase contrast series 57?

Just to add to the comments above - You may find that though the generic phase kit works well enough you will be limited by the objectives that come with it. A used 160 finite quality microscope will allow you to upgrade just about everything in time (and all designed to work well together) To use Z...
by 75RR
Mon Apr 19, 2021 7:16 am
Forum: Pictures and Videos
Topic: Actinocyclus octonarius
Replies: 9
Views: 183

Re: Actinocyclus octonarius

Thanks janvangastel, was experimenting with direct projection using a 12.5x Kpl
by 75RR
Mon Apr 19, 2021 5:49 am
Forum: Pictures and Videos
Topic: Actinocyclus octonarius
Replies: 9
Views: 183

Re: Actinocyclus octonarius

Many thanks sinabro
by 75RR
Sun Apr 18, 2021 11:52 pm
Forum: Pictures and Videos
Topic: Actinocyclus octonarius
Replies: 9
Views: 183

Actinocyclus octonarius

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Zeiss Planapo 63x/1.4, DIC, 70µm diameter, stacked in Photoshop, Marine sample, Alboran Sea.
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by 75RR
Wed Apr 14, 2021 6:19 am
Forum: Pictures and Videos
Topic: Rotifer Euchlanis
Replies: 5
Views: 195

Re: Rotifer Euchlanis

Very nice! Great resolution and clarity
by 75RR
Tue Apr 13, 2021 3:28 pm
Forum: Pictures and Videos
Topic: Licmophora abbreviata
Replies: 9
Views: 268

Re: Licmophora abbreviata

Many thanks janvangastel and ImperatorRex (had missed your posts)
by 75RR
Sun Apr 11, 2021 12:09 am
Forum: Pictures and Videos
Topic: Rotifer: Adineta vaga minor
Replies: 3
Views: 164

Re: Rotifer: Adineta vaga minor

Great videos with some very nice detail - particularly liked the hatching!
by 75RR
Sat Apr 10, 2021 12:50 pm
Forum: For forum members who want to buy and sell equipment
Topic: Wanted: Zeiss KPL 2.5x Photo Eyepiece
Replies: 17
Views: 615

Re: Wanted: Zeiss KPL 2.5x Photo Eyepiece

Hi, you might have a look at Rolf's new camera adaptation method: https://microscopyofnature.com/microphotography-hybrid-eyepieces He uses combinations of standard eyepiece components to form a projective. I have tested his method and it works very well. Bob The modified eyepiece idea as shown by R...
by 75RR
Fri Apr 09, 2021 6:41 pm
Forum: Pictures and Videos
Topic: Hydra viridissima gets decimated.
Replies: 8
Views: 321

Re: Hydra viridissima gets decimated.

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Excellent action video. Do hope Frank recovers soon!
by 75RR
Fri Apr 09, 2021 6:40 pm
Forum: Pictures and Videos
Topic: Licmophora abbreviata
Replies: 9
Views: 268

Re: Licmophora abbreviata

Thanks Plasmid
by 75RR
Fri Apr 09, 2021 12:16 pm
Forum: Pictures and Videos
Topic: Licmophora abbreviata
Replies: 9
Views: 268

Re: Licmophora abbreviata

Many thanks Luis Carlos, D0c and Hobbyst46
by 75RR
Fri Apr 09, 2021 12:14 pm
Forum: Pictures and Videos
Topic: Melosira nummuloides
Replies: 5
Views: 157

Re: Melosira nummuloides

Thanks MicroBob and great link. Always nice to see beyond what a light microscope can do!
by 75RR
Fri Apr 09, 2021 7:40 am
Forum: Pictures and Videos
Topic: Licmophora abbreviata
Replies: 9
Views: 268

Licmophora abbreviata

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Zeiss Planapo 63x/1.4, DIC, 65µm length, stacked and stitched in Photoshop, Marine sample, Alboran Sea.

Unfortunately some stem detail was lost in the stacking
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by 75RR
Fri Apr 09, 2021 6:20 am
Forum: Pictures and Videos
Topic: Melosira nummuloides
Replies: 5
Views: 157

Re: Melosira nummuloides

Many thanks LouiseScot and KurtM
by 75RR
Thu Apr 08, 2021 11:57 pm
Forum: Pictures and Videos
Topic: Melosira nummuloides
Replies: 5
Views: 157

Melosira nummuloides

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Came across a small strand of Melosira nummuloides yesterday, always a treat when I come across them

Zeiss Planapo 63x/1.4, DIC, 17µm width, stacked in Photoshop, Marine sample, Alboran Sea.
Second image included a stitch as well, in order to capture the whole strand.
by 75RR
Tue Apr 06, 2021 7:46 am
Forum: Pictures and Videos
Topic: Collotheca sp. - Rotifer
Replies: 12
Views: 1603

Re: Collotheca sp. - Rotifer

very nice images, well done
by 75RR
Sun Apr 04, 2021 7:58 pm
Forum: Illumination Techniques
Topic: First go at Dodt
Replies: 2
Views: 196

Re: First go at Dodt

Here's a diatom strew with some crops using the Nikon 40/0.85 and 3W violet-blue LED. I've been testing out the violet-blue LED though I find it strange that it looks violet-blue to the naked eye but turns into a deep blue when viewed through an ocular. For my peace of mind - What precautions are y...