Search found 279 matches

by coominya
Tue Oct 16, 2018 10:52 am
Forum: Introduce yourself
Topic: Hi from Belgium
Replies: 2
Views: 2125

Re: Hi from Belgium

Welcome Aatjebanaantje, hope you find all you are looking for here.
Tom
by coominya
Fri Oct 12, 2018 9:56 pm
Forum: My microscope
Topic: An Upgrade
Replies: 5
Views: 2827

Re: An Upgrade

With the 40:1 objectives the front lens is most often the problem. In working position it is so close to the slide that it easily gets dipped in mountants or immersion oil or even get scratched. The blue filter also cuts IR light that is not good for the eyes. Thanks for that info Bob, I'll give th...
by coominya
Fri Oct 12, 2018 8:40 pm
Forum: My microscope
Topic: Nikon Stereo Microscope SZM-????
Replies: 25
Views: 8807

Re: Nikon Stereo Microscope SZM-????

A nice Japanese scope. I'm a fan of such, though I don't have a stereo one. No room really :D As for different eyepieces, I would do your research before buying anything that wasn't standard issue on the microscope. I bought an upgrade widefield pair of olympus eyepieces for an old olympus ECE biolo...
by coominya
Sun Oct 07, 2018 9:14 pm
Forum: Beginner's corner
Topic: Tools
Replies: 7
Views: 2540

Re: Tools

MicroBob wrote: or a sieve of 50 to 90µ mesh size. On ebay you can order stainless steel mesh of this mesh size.
Do you have a link? I can't find it.
by coominya
Thu Oct 04, 2018 11:18 am
Forum: Pictures and Videos
Topic: Amobeae tests (fresh water)
Replies: 15
Views: 2481

Re: Amobeae tests (fresh water)

Nice work, an orchid pot eh, I know where there are lots of pots with water festering in them, I must have a look.
by coominya
Sun Sep 30, 2018 6:56 pm
Forum: Pictures and Videos
Topic: Moss leaf with papillae
Replies: 2
Views: 840

Re: Moss leaf with papillae

Very good image, I am quite fond of moss, I once collected it to give a grassy landscape look to small bonsai plants. Your post has made me curious as to what flower petals look like at the microscopic level too.
by coominya
Sat Sep 29, 2018 11:10 am
Forum: Pictures and Videos
Topic: copepod nauplius
Replies: 8
Views: 1469

Re: copepod nauplius

That's quite a jump in DOF between 40x and 20x, the two objectives I use the most, and explains why my view at the higher power is diminished in terms of focus. Thanks for the tips on adding and removing water.
by coominya
Fri Sep 28, 2018 11:09 pm
Forum: Off Topic
Topic: Evolution turned this ant into a living drill
Replies: 2
Views: 2471

Evolution turned this ant into a living drill

Bods in Paris combined x-ray microtomography and high-powered microscopes to visualize the ants’ skeletomuscular system, focusing on the anatomy of the head, jaws, and legs.

http://www.sciencemag.org/news/2018/08/ ... ving-drill
by coominya
Fri Sep 28, 2018 11:03 pm
Forum: Pictures and Videos
Topic: strumigenys eggersi
Replies: 21
Views: 3091

Re: strumigenys eggersi

I too would be interested to see more closeups of the habitat they build.
by coominya
Fri Sep 28, 2018 11:00 pm
Forum: Pictures and Videos
Topic: copepod nauplius
Replies: 8
Views: 1469

Re: copepod nauplius

Plan 40x/0.65, DIC, 180µm, Pinned by cover slip. When you say 'pinned' 75, do you imply you squeezed the slip down to sort of immobilize the copepod? I washed some slides last week and there must have been a residue of detergent left on them because the water sample spread very thin even before I p...
by coominya
Fri Sep 28, 2018 10:51 pm
Forum: Beginner's corner
Topic: Old brand microscope vs new less famous brand microscope
Replies: 8
Views: 2469

Re: Old brand microscope vs new less famous brand microscope

This also depends on how well you are able to do checking, maintenance, repairs and hunting down missing parts on the used market. Yes, this is am important caveat, the buyer of an older second hand scope should be very sure it needs no maintenance or repairs or they had better have some hands on s...
by coominya
Fri Sep 28, 2018 12:20 pm
Forum: Beginner's corner
Topic: How to recognize a phase contrast microscope?
Replies: 7
Views: 1763

Re: How to recognize a phase contrast microscope?

Could you please tell me what "PL" stands for that shows the objectives are phase contrast? Have a look at this article Reza, it has an interactive unit near the top of the page that will allow you to see what a specimen looks like in Bright-field, Positive, and Negative phase imagery. I find Phase...
by coominya
Fri Sep 28, 2018 12:09 pm
Forum: Beginner's corner
Topic: Old brand microscope vs new less famous brand microscope
Replies: 8
Views: 2469

Re: Old brand microscope vs new less famous brand microscope

I would personally recommend the older scopes, but not too old, 1985-2000 as a ballpark reference say. The very modern scopes, even brand name ones like an Olympus I bought and sent back can suffer from cheap materials and design. Things like wobbly stage controls and tinny metal or cheap cast compo...
by coominya
Thu Sep 27, 2018 8:19 pm
Forum: Identification help
Topic: What is this organism?
Replies: 9
Views: 2587

Re: What is this organism?

I have no idea myself, but I like it! I wish I had some to study.
What country are you in, what climate?
by coominya
Thu Sep 27, 2018 8:15 pm
Forum: Pictures and Videos
Topic: Pol crystal mirror abstract
Replies: 7
Views: 1355

Re: Pol crystal mirror abstract

Intricate. It looks like a kaleidoscope. I know sea salt has a variety of different minerals dissolved in it and I wonder what would form when it was allowed to crystallize.
by coominya
Thu Sep 27, 2018 8:08 pm
Forum: My microscope
Topic: An Upgrade
Replies: 5
Views: 2827

Re: An Upgrade

Congratulations! this one is more expandable and modern too! And long barrel objectives. It has a blue filter below the condenser, quite dark I thought. I removed it and the illumination became very yellow so obviously it's purpose it to produce a more natural lighting. I replaced it and added one ...
by coominya
Thu Sep 27, 2018 6:24 am
Forum: My microscope
Topic: An Upgrade
Replies: 5
Views: 2827

An Upgrade

I decided to move on from the old Olympus ECE, which has served me well, but is, bluntly, a bit outdated in the optics. I snagged a later model CH-2 off feeBay which has a lot more contrast with its ED glass and better lighting too. I spent a an hour last night investigating a rusty 12mm spanner, qu...
by coominya
Wed Sep 26, 2018 9:32 pm
Forum: Pictures and Videos
Topic: I have finally found some diatoms
Replies: 14
Views: 2261

Re: I have finally found some diatoms

Lots of diversity alright. When you say "clean" do you mean you will isolate the diatoms from all that extraneous matter on the slide, or are you going to conduct that complex procedure involving acids?
by coominya
Wed Sep 26, 2018 9:22 pm
Forum: Introduce yourself
Topic: Hello from the Pacific Northwest
Replies: 6
Views: 2504

Re: Hello from the Pacific Northwest

Welcome . Look forward to seeing some pix of these.
by coominya
Tue Sep 25, 2018 6:46 am
Forum: For forum members who want to buy and sell equipment
Topic: Lab glassware
Replies: 16
Views: 2777

Re: Lab glassware

I tried some plastic petri dishes on my upright and found the results very ordinary. Luckily I had bought some second hand glass ones and was able to employ them, to good effect. I have a few beakers, an old German graduated cylinder, and other assorted glass. I Absolutely love glass. :)
by coominya
Tue Sep 25, 2018 2:57 am
Forum: Pictures and Videos
Topic: Man-faced beetle pano using microscope
Replies: 12
Views: 1815

Re: Man-faced beetle pano using microscope

Beautiful. Did you do any post processing or is the pic basically a raw image?
by coominya
Tue Sep 25, 2018 2:48 am
Forum: Introduce yourself
Topic: Hello everyone
Replies: 1
Views: 6341

Re: Hello everyone

Welcome. Tell us a bit about your interest in microscopy.
by coominya
Thu Sep 20, 2018 10:28 pm
Forum: Illumination Techniques
Topic: Darkfield Success
Replies: 3
Views: 1931

Darkfield Success

I finally discovered how to get my el-cheapo darkfield disks to work on my Oly ECE upright. I had to open the field diaphragm fully and the condenser iris fully, then raise the condenser. The field diaphragm was what I had missed in my first efforts. There is a bit of flare due to the camera being h...
by coominya
Thu Sep 20, 2018 10:17 pm
Forum: Illumination Techniques
Topic: A Question About Bulbs.
Replies: 14
Views: 3352

Re: A Question About Bulbs.

For some fiber optic lamps (Dolan Jenner for example) collimating lenses are available (push-on type) that enable to modify the light beam. lol, I wondered what that little lens attached to the end of one of the coily pipes was, it seemed useless for what I wanted to do as it only widened the beam....
by coominya
Thu Sep 20, 2018 11:03 am
Forum: Illumination Techniques
Topic: A Question About Bulbs.
Replies: 14
Views: 3352

Re: A Question About Bulbs.

an important tip to avoid shortening bulb life (both incandescent and halogen) is to avoid turning them on and off at high voltage. It is advisable to dim down before turning a bulb off and slowly increase the voltage when turning a bulb on. Good tip. I was just experimenting with that very practic...
by coominya
Thu Sep 20, 2018 1:56 am
Forum: Pictures and Videos
Topic: Parasitic Protozoan Oocyst
Replies: 4
Views: 1130

Re: Parasitic Protozoan Oocyst

8 years! Poor cat. I hope it's cured now. Nice photos.
by coominya
Thu Sep 20, 2018 1:51 am
Forum: Illumination Techniques
Topic: A Question About Bulbs.
Replies: 14
Views: 3352

Re: A Question About Bulbs.

Thanks for the replies. I haven't actually ordered the new one yet, $20, but I have dozens of these 12V halogen bulbs laying around so I might just see how the one in there goes. They have been basically throwing them away here since the energy saving fat took hold. Why spend good money and wait 2 m...
by coominya
Wed Sep 19, 2018 7:48 am
Forum: Illumination Techniques
Topic: A Question About Bulbs.
Replies: 14
Views: 3352

Re: A Question About Bulbs.

I'll check the voltage, and no I didn't pay that much, that's just a picture.
by coominya
Wed Sep 19, 2018 3:26 am
Forum: Illumination Techniques
Topic: A Question About Bulbs.
Replies: 14
Views: 3352

A Question About Bulbs.

I just picked up this fiber optic light source to allow some top illumination, etc. https://i.postimg.cc/Gh0qfPt7/OLY-02.jpg https://i.postimg.cc/Mpqt6Wy1/OLY-03.jpg https://i.postimg.cc/6pP7Hc5T/LAMP01.jpg The bulb is supposed to be a 15V 150 Watt, but it's not... This is what it's supposed to have...
by coominya
Wed Sep 19, 2018 3:04 am
Forum: Camera systems and imaging
Topic: Buying a camera, opinionon SD card please.
Replies: 8
Views: 3580

Re: Buying a camera, opinionon SD card please.

Hobbyst46 wrote: Incidentally, instead of a spare battery, I use a Canon compatible AC adapter
Unfortunately the Olympus has no such provision, though I did receive 2 batteries with it and their lifespan seems quite adequate.