Search found 211 matches

by Sauerkraut
Thu Aug 29, 2019 11:05 pm
Forum: Camera systems and imaging
Topic: ND filter vs filter for phase contrast
Replies: 5
Views: 1508

Re: ND filter vs filter for phase contrast

Thank you photomicro and Hobbyst46. That answers my questions.
by Sauerkraut
Thu Aug 29, 2019 4:39 pm
Forum: Beginner's corner
Topic: Compound scope for home education
Replies: 18
Views: 3508

Re: Compound scope for home education

Having been in a similar boat in the past, I agree with farnsy. I was unsure if a used scope would be okay so went with a new Chinese scope some years ago (wasn't aware of this forum at the time). And although it has been a decent scope (with some upgrades, excellent for general viewing actually), m...
by Sauerkraut
Thu Aug 29, 2019 3:37 pm
Forum: Camera systems and imaging
Topic: ND filter vs filter for phase contrast
Replies: 5
Views: 1508

ND filter vs filter for phase contrast

My Optiphot is missing the ND16 filter. I was thinking it might be more useful to use the slot for a green filter since it reportedly gives better phase contrast images. Does anyone use the ND filters or can confirm/refute that a green filter would be worthwhile for PC? Thank you for any input. Heat...
by Sauerkraut
Wed Aug 28, 2019 7:45 pm
Forum: Identification help
Topic: Amoeba with baggage
Replies: 2
Views: 2605

Re: Amoeba with baggage

They are scary somehow. That flagellated one you posted video of looked like something out of a microbe horror film. I eventually decided that 'mine' just had some organic matter plus a wayward diatom stuck to its posterior. Maybe it was a Pelomyxa spp? Now I've forgotten. It's interesting to note t...
by Sauerkraut
Tue Aug 27, 2019 7:28 pm
Forum: Pictures and Videos
Topic: Nitzschia sigma
Replies: 17
Views: 2466

Re: Nitzschia sigma

Another exquisite image!

According to that recently posted microbe paper on climate change, diatoms perform 25-40% of total primary production in the oceans. Impressive.
by Sauerkraut
Mon Aug 26, 2019 10:43 pm
Forum: Pictures and Videos
Topic: Calcite thin section
Replies: 3
Views: 1190

Re: Calcite thin section

That's a cool pattern and nice coloring. Thanks for sharing.
by Sauerkraut
Mon Aug 26, 2019 10:41 pm
Forum: Microscopes and optics
Topic: Eyepiece disassembly - bad idea?
Replies: 4
Views: 887

Re: Eyepiece disassembly - bad idea?

I answered my own question - just kept lightly buffing out the oil with Q-tips and Purosol Optical lens cleaner and then a dry Q-tip in between runs.

Incidentally I've found Purosol followed by Sparkle for the final pass is a really nice one-two punch for optics cleaning.
by Sauerkraut
Mon Aug 26, 2019 7:26 pm
Forum: Microscopes and optics
Topic: Eyepiece disassembly - bad idea?
Replies: 4
Views: 887

Re: Eyepiece disassembly - bad idea?

Thank you, 75RR and PeteM. Really good information, especially on lens direction and orientation. The reticle was loose and fell out, probably from the exciting shipping excursion. I managed to get one apart and it's a contained lens canister so fairly easy. The other one has what looks like supergl...
by Sauerkraut
Mon Aug 26, 2019 6:20 pm
Forum: Microscopes and optics
Topic: Eyepiece disassembly - bad idea?
Replies: 4
Views: 887

Eyepiece disassembly - bad idea?

There isn't much info available on disassembling eyepieces for more thorough cleaning. The Nikon Optiphot CWF eyepieces look like they come apart with a spanner wrench. Is disassembly a bad idea with unseen pitfalls or reasonably manageable? The wrench would unscrew a collar that holds the top lens ...
by Sauerkraut
Sat Aug 24, 2019 6:29 pm
Forum: Resources (online, books etc.)
Topic: Nikon Optiphot/Labophot Repair Manual
Replies: 0
Views: 2657

Nikon Optiphot/Labophot Repair Manual

Thanks to MichaelG via an older posting, here is the Nikon repair manual. I thought it might be worth reposting the link here because it was a bit difficult to find a free version.

https://lavinia.as.arizona.edu/~mtuell/ ... 20BODY.pdf
by Sauerkraut
Sat Aug 24, 2019 3:11 pm
Forum: Pictures and Videos
Topic: Desmidiacea images - Tharandter wood, Saxonia, Germany
Replies: 20
Views: 2168

Re: Desmidiacea images - Tharandter wood, Saxonia

I attendend a meeting of a nature protection organisation, our University and our society yesterday where a desmidicea monitoring program for our region was installed. Our university has one of the biggest live collections of desmidiaceae world wide and know how to handle them properly. Unfortunatl...
by Sauerkraut
Sat Aug 24, 2019 2:50 pm
Forum: Beginner's corner
Topic: My first project microscope - Optiphot questions
Replies: 11
Views: 2663

Re: My first project microscope - Optiphot questions

Thank you, gastrotrichman.
by Sauerkraut
Fri Aug 23, 2019 3:47 pm
Forum: Beginner's corner
Topic: My first project microscope - Optiphot questions
Replies: 11
Views: 2663

Re: My first project microscope - Optiphot questions

Thank you Hobbyst46 and KurtM for the links - I'll be viewing them shortly.

And thank you apochronaut and Scarodactyl - I'll keep my eye out for nice additions to this scope. Sorry I missed that lamp house and good to know about the UW head.
by Sauerkraut
Thu Aug 22, 2019 6:21 pm
Forum: Beginner's corner
Topic: My first project microscope - Optiphot questions
Replies: 11
Views: 2663

Re: My first project microscope - Optiphot questions

Thank you Hobbyst46, Microbob, and PeteM. I'm admittedly excited about this scope and will take your suggestions to heart. Here begins my love affair with Nikon. Everything moves smoothly but due to its nature, the fine focus is a question mark - Microbob's flashlight idea is smart and will let me c...
by Sauerkraut
Thu Aug 22, 2019 4:03 pm
Forum: Beginner's corner
Topic: My first project microscope - Optiphot questions
Replies: 11
Views: 2663

My first project microscope - Optiphot questions

I bought a phase contrast Optiphot on eBay from a seller who said he didn't know anything about scopes, etc, etc. - probably a mistake I won't make again - if only because when the box arrived it looked like it had been through a war and the scope was not secured. Oh boy. I was prepared to have a fu...
by Sauerkraut
Mon Aug 19, 2019 6:09 pm
Forum: Pictures and Videos
Topic: Arcella amoeba - empty housing
Replies: 6
Views: 1021

Re: Arcella amoeba - empty housing

That's a very interesting Amoeba and a nice image.

The Cell Biology book I'm reading states that Amoebas have over 10 to the 11th power of nucleotide pairs per haploid genome. As a comparison, humans have between 10 to the 9th and 10th nucleotide pairs per haploid genome. Interesting.
by Sauerkraut
Sun Aug 18, 2019 3:42 pm
Forum: Off Topic
Topic: There Are Thousands of Tardigrades on the Moon. Now What?..
Replies: 9
Views: 10042

Re: There Are Thousands of Tardigrades on the Moon. Now What?..

In looking for information on this crash and the fate of the tardies, I discovered video compilations of astronauts falling on the moon. Rather ironic, in a way, that the disoriented, stumbling and bumbling astronauts look a little like tardigrades themselves.
by Sauerkraut
Sat Aug 17, 2019 5:09 pm
Forum: Off Topic
Topic: Symbiosis
Replies: 4
Views: 3885

Re: Symbiosis

An interesting article. Symbiosis isn't the norm for fungi, highly intolerant of other colonies. A side effect of their chemical warfare can be very desirable. https://www.ukfungusday.co.uk/blog/fungus-wars The secondary metabolites used in such warfare are being researched actively. Without them w...
by Sauerkraut
Sat Aug 17, 2019 2:59 pm
Forum: Off Topic
Topic: Symbiosis
Replies: 4
Views: 3885

Symbiosis

It's interesting that microbes routinely cooperate to increase the survival of both species. How much slower might evolution have been if there were only destructive tendencies between individuals and species? Perhaps there wouldn't have been much advancement in evolution at all. Here's a fungus and...
by Sauerkraut
Thu Aug 15, 2019 3:29 pm
Forum: Identification help
Topic: The Thing
Replies: 10
Views: 2511

Re: The Thing

Not too small for the seed ? Forgot to mention - it was almost transparent Surprisingly, no. Using a stage micrometer, the grass seeds measure out to the same dimensions you noted: ~ 0.5 mm long x 0.25 mm wide. They are teeny tiny seeds, but not quite as pointed on the one end as your 'thing' is. I...
by Sauerkraut
Tue Aug 13, 2019 12:20 am
Forum: Identification help
Topic: The Thing
Replies: 10
Views: 2511

Re: The Thing

These look similar in size, shape, and color to sedge grass seeds (species info unknown) that I collected today alongside the pond. The tiny seeds were contained inside larger black husks, which I initially mistook for the seeds. I did not see hexagonal patterning but didn't look that closely either...
by Sauerkraut
Sat Aug 10, 2019 6:03 pm
Forum: Pictures and Videos
Topic: Mastigamoeba Aspera video in DIC
Replies: 9
Views: 1451

Re: Mastigamoeba Aspera video in DIC

That is one amazing amoeba. Is the flagellum for sensory purposes or to aid in motility somehow?

I'd be scared if I was a nearby microbe that couldn't get out of the way.
by Sauerkraut
Sat Aug 10, 2019 6:02 pm
Forum: Pictures and Videos
Topic: Rotifer in capsule
Replies: 2
Views: 669

Re: Rotifer in capsule

That's a nice website. Thanks for linking to it.
by Sauerkraut
Sat Aug 10, 2019 2:33 pm
Forum: Pictures and Videos
Topic: Rotifer in capsule
Replies: 2
Views: 669

Rotifer in capsule

I was surprised to find this encapsulated rotifer in a pond sample and wondering what would cause it to go into this state in a presumably sustaining environment. Interestingly it was moving its jaws periodically, as if ruminating. You can just make out the red eyespot, though it looks brown in the ...
by Sauerkraut
Sat Aug 10, 2019 2:23 am
Forum: Miscellaneous
Topic: Microbe aquarium
Replies: 5
Views: 3639

Re: Microbe aquarium

Amazon has them: https://www.amazon.com/Penn-Plax-Terrarium-Planting-Waterfall/dp/B01MTKXJ6K/ref=sr_1_2?keywords=aqua+terrarium&qid=1565403602&s=gateway&sr=8-2 I went with the medium. There are some negative reviews but so far it seems like a decent set up. The main mistake people are making is tryi...
by Sauerkraut
Fri Aug 09, 2019 9:47 pm
Forum: Miscellaneous
Topic: Microbe aquarium
Replies: 5
Views: 3639

Re: Microbe aquarium

Bob, The pond is currently at 67 F (apx 20 C). Maybe the algae is due to the pond being man made and rather small at perhaps 200 - 250 gallons. But the non-motile algae thrive so wildly that they live in communal clumps on the sides of the pond, making it hard to tell one species from another. We've...
by Sauerkraut
Fri Aug 09, 2019 6:26 pm
Forum: Miscellaneous
Topic: Microbe aquarium
Replies: 5
Views: 3639

Microbe aquarium

My pond is a little out of control, microbe-wise, so I thought it would be fun to start an indoor aquarium. This one is more of an aqua-terrarium that makes pleasing fountain noises. Is anyone else growing an indoor microbe farm? Any tips, thoughts etc.? This one is not established yet - just arrive...
by Sauerkraut
Thu Aug 08, 2019 7:43 pm
Forum: Pictures and Videos
Topic: Licmophora sp. (revised id: Climacosphenia moniligera)
Replies: 12
Views: 2029

Re: Licmophora sp. (more)

Truly amazing. Thanks for sharing.

Your images look much nicer than the ones online too.
by Sauerkraut
Wed Aug 07, 2019 5:39 pm
Forum: Camera systems and imaging
Topic: Microscope Cameras?
Replies: 210
Views: 35351

Re: Microscope Cameras?

I think that looks really good for a microbe moving around in a cavity slide. The colors are very nice too.
by Sauerkraut
Wed Aug 07, 2019 4:04 am
Forum: Camera systems and imaging
Topic: DSLR sensor heat - an issue?
Replies: 3
Views: 1754

Re: DSLR sensor heat - an issue?

Thanks very much for the response mrsonchus. Sounds like either one will work very well.


Heather