Search found 66 matches

by iconoclastica
Sun Jul 28, 2019 9:25 pm
Forum: Pictures and Videos
Topic: Pollen. There's lots of it about.
Replies: 99
Views: 17282

Re: Pollen. There's lots of it about.

Used Photoshop to stack and add image of flower to pollen image. Scale, measurements and other text generated with Micam software. Identification of flower with Plantnet app on mobile phone. Take a photo of the plant and the app offers a number of images to identify it (with my photo it was three ,...
by iconoclastica
Sun Jun 30, 2019 3:33 pm
Forum: Microscopy accessories
Topic: Home adapter for microscope
Replies: 6
Views: 732

Re: Home adapter for microscope

Here's an example, reduced for upload, but un-cropped:
by iconoclastica
Sat Jun 29, 2019 8:41 pm
Forum: Pictures and Videos
Topic: Pollen. There's lots of it about.
Replies: 99
Views: 17282

Re: Pollen. There's lots of it about.

Well done!
by iconoclastica
Sat Jun 29, 2019 8:39 pm
Forum: Microscopy accessories
Topic: Home adapter for microscope
Replies: 6
Views: 732

Re: Home adapter for microscope

It is quite large enough though centering is critical. The height of the image is nearly identical to what I see by eye, but of course the width is 1.5x wider. I made a mistake ordering the dovetail 0.5mm too small so mine is a bit off center. I use it with Canon APS-C; I am not familiar with the Ni...
by iconoclastica
Sat Jun 29, 2019 10:16 am
Forum: Microscopy accessories
Topic: Home adapter for microscope
Replies: 6
Views: 732

Re: Home adapter for microscope

Hi Ivan, I made one, though for a different microscope/camea combination. But that should not matter too much, important is that when your camera is APS-C and the microscope has no colour correcting eyepieces, you can do without a relay lens, which makes everyting much simpler. My solution is descri...
by iconoclastica
Wed Jun 26, 2019 9:23 am
Forum: Pictures and Videos
Topic: Mallow Pollen
Replies: 10
Views: 1766

Re: Mallow Pollen

It's the ridiculously cheap, and very effective, ebay item that I have recommended several times. I will find you a link MichaelG. Thanks. I know these and even may still have a couple of them somewhere. Only I never read that name before, nor did I ever see them in conjunction with my microscope. ...
by iconoclastica
Tue Jun 25, 2019 10:02 pm
Forum: Pictures and Videos
Topic: Mallow Pollen
Replies: 10
Views: 1766

Re: Mallow Pollen

Is the 'led mini-bulb dome' described in detail somewhere?
by iconoclastica
Tue Jun 25, 2019 9:58 pm
Forum: Beginner's corner
Topic: Condensers...
Replies: 14
Views: 2349

Re: Condensers...

AFAIK, there are no theoretical objections to using condensers foreign to the brand of your microscope, unless they come along with custom above stage equipment (the phase rings/objectives were mentioned above). But there's also the issue of physical fit. However, if you know your way with e.g. 3d-p...
by iconoclastica
Wed Apr 10, 2019 9:33 am
Forum: Home-made microscope adaptations
Topic: DIY filters
Replies: 1
Views: 4193

DIY filters

De Nikon Optiphot uses 45mm filters at the lamphouse. These filters are quite hard to find at all and bl**dy expensive when they are offered. For special applications they still may be worth it, but I think a simple ND filter or a blue color filter don't need expensive technology. I tried cutting fi...
by iconoclastica
Sat Apr 06, 2019 9:47 pm
Forum: Introduce yourself
Topic: Hello from Oregon
Replies: 12
Views: 4980

Re: Hello from Oregon

Any other freshwater meiofauna students out there? Quite some years ago I worked with free-living nematodes. To say 'freshwater' would be to stretch the truth, for it was in a fresh to marine transect, so mainly brackish water. All these years since, I haven't looked at them again. But since a coup...
by iconoclastica
Tue Apr 02, 2019 3:59 pm
Forum: Illumination Techniques
Topic: Dark-field white sugar
Replies: 14
Views: 4230

Re: Dark-field white sugar

There has been long-distance trade in pots for at least 2000 years. So unless you have found the dump of a pottery, how can you tell where the fragments originate from, if the basic ingredients also could be imported frome elsewhere? My not-to-be-trusted assumption would be that clay is the product ...
by iconoclastica
Sat Mar 30, 2019 10:07 pm
Forum: Microscopes and optics
Topic: on the why of NA and resolution
Replies: 8
Views: 1577

Re: on the why of NA and resolution

Have a look at this video: Understanding the Light Microscope by Peter Evennett https://www.youtube.com/watch?v=60_jgZtyR6U The whole video at 1 hour and 18 minutes is well worth watching (should be a requirement for all amateur microscopists) the section on Abbe's Diffraction Experiments starts at...
by iconoclastica
Sat Mar 30, 2019 10:47 am
Forum: Microscopes and optics
Topic: on the why of NA and resolution
Replies: 8
Views: 1577

Re: on the why of NA and resolution

Thanks for al your replies. Part of it I understand, but still not the whole story. But you have given me a number of links that I will read thouroughly tonight. Hold on...

Wim
by iconoclastica
Fri Mar 29, 2019 6:45 pm
Forum: Microscopes and optics
Topic: on the why of NA and resolution
Replies: 8
Views: 1577

on the why of NA and resolution

Is there a verbal explanation why higher apertures result in better resolution? I mean, the maths is clear enough, but why can a wider cone of light resolve smaller details?
by iconoclastica
Fri Mar 29, 2019 9:37 am
Forum: Microscopes and optics
Topic: Old microscope stuck
Replies: 15
Views: 2555

Re: Old microscope stuck

Sorry I am too late :D

Congratulations, your efforts have been rewarded!



(The plate unscrewed indeed releases the fine focus block. It shifts upwards until it hits the arm:)

_WDW7831.jpg
_WDW7831.jpg (109.06 KiB) Viewed 1937 times
_WDW7830.jpg
_WDW7830.jpg (100 KiB) Viewed 1937 times
by iconoclastica
Thu Mar 28, 2019 9:06 pm
Forum: Pictures and Videos
Topic: horsetail-men
Replies: 1
Views: 1118

horsetail-men

You can always tell spring has arrived when the horsetail men are dancing in the garden :D
Nikon M-Plan 60x transill.
Nikon M-Plan 60x transill.
spore2.jpg (89.93 KiB) Viewed 1118 times
by iconoclastica
Tue Mar 26, 2019 9:39 am
Forum: Microscopy accessories
Topic: Using Motic K700 accessories on Leica MZ6 specifically Stereo Microscope Drawing Device
Replies: 23
Views: 7623

Re: Using Motic K700 accessories on Leica MZ6 specifically Stereo Microscope Drawing Device

How do you do that, making a thread in such large diameters? I tried a while to do it for the M50x1 of the Mz7.5 objective, but I wasn't succesful.
by iconoclastica
Mon Mar 25, 2019 8:06 pm
Forum: Microscopy accessories
Topic: Using Motic K700 accessories on Leica MZ6 specifically Stereo Microscope Drawing Device
Replies: 23
Views: 7623

Re: Using Motic K700 accessories on Leica MZ6 specifically Stereo Microscope Drawing Device

I have an old Wild MZ5 and it is 'the same' as the Leica MZ (other than the zoom system) so guess it is from when they rebranded.
I am actually using a black Wild photothube on an MZ7.5. As far as I am any judge, only style and colour don't match.
by iconoclastica
Tue Mar 19, 2019 8:02 pm
Forum: Pictures and Videos
Topic: le pollen aux Camélias
Replies: 3
Views: 1451

le pollen aux Camélias

This is one of my first attempts to use the 1950 Lomo OI-2 darkfield condenser substage a Nikon optiphot. It's a wet condenser and I use it with glycerin. Sometimes it works very well, bright subjects and a nice black background, but often the field is uneven, with bright/black areas and with black/...
by iconoclastica
Sun Mar 17, 2019 9:06 pm
Forum: Microscopes and optics
Topic: Old microscope stuck
Replies: 15
Views: 2555

Re: Old microscope stuck

I also managed to persuade the block to move up a centimetre by whacking it with the handle of a screwdriver.
I can see you are a true fine-mechanic! :D :D :D
by iconoclastica
Fri Mar 15, 2019 8:36 pm
Forum: Microscopes and optics
Topic: Old microscope stuck
Replies: 15
Views: 2555

Re: Old microscope stuck

First a correction: I said the axis and knobs stay in place and the nut moves. They don't. The whole axis is moving sideways (just like you observed) and the nut is a disk fixed to the axis that pushes the lever to the right. The lever directly lifts the stage, which comes down (by gravity I presume...
by iconoclastica
Fri Mar 15, 2019 5:52 pm
Forum: Identification help
Topic: No idea what this is
Replies: 4
Views: 2244

Re: No idea what this is

It's hard to see without the possibility to move around. I think you have there the remains of more than one dead body clung together. The spiny thing might well be a wing. Small insects often have hairs extending from a central stiff instead of glassy wings. Thrip could very well be the correct sug...
by iconoclastica
Fri Mar 15, 2019 5:51 pm
Forum: Identification help
Topic: No idea what this is
Replies: 4
Views: 2244

Re: No idea what this is

It's hard to see without the possibiity to move around. I think you have there the remains of more than one dead body clung together. The spiny thing might well be a wing. Small insects often have extending hairs instead of glassy wings. Thrip could very well be the correct suggestion indeed. Altern...
by iconoclastica
Fri Mar 15, 2019 5:38 pm
Forum: Microscopes and optics
Topic: Old microscope stuck
Replies: 15
Views: 2555

Re: Old microscope stuck

From the outside, this looks like the same mechanism that Euromex used in that period (and perhaps still does). The fine focus block moves the stage, the coarse focus block moves the fine focus block, and with that the stage. The coarse focus drives a rack and pinion (I believe that are the English ...
by iconoclastica
Thu Mar 14, 2019 12:36 pm
Forum: For forum members who want to buy and sell equipment
Topic: Looking for Nikon S-KT (FOUND)
Replies: 25
Views: 3316

Re: Looking for Nikon S-KT (FOUND)

Thank you, Mitch & Pete, fo this lovely dialogue. I liked to read you go through this process that I now know so well for I went through it a short while ago, with the next generation Nikons. It seems I am the last one to learn the term 'Operation Frankenstein' that so well applies to my Obbophot/La...
by iconoclastica
Thu Mar 07, 2019 5:23 pm
Forum: Microscopes and optics
Topic: 100x NCG oil: what is it used for?
Replies: 5
Views: 983

Re: 100x NCG oil: what is it used for?

yuk, that's unhygienic ! Thanks, so many micoscopic applications beyond the ones I am familiar with.
by iconoclastica
Thu Mar 07, 2019 3:36 pm
Forum: Microscopes and optics
Topic: 100x NCG oil: what is it used for?
Replies: 5
Views: 983

100x NCG oil: what is it used for?

I came across an offer today for a Nikon 100x NCG oil objective. I feel little inclined to buy it, but it made me wonder what these lenses are intended for. It's 160mm tube length, so I presume it was to be used with transmissive lighting - the incident lighting of Nikon's adds 50mm tube length. So,...
by iconoclastica
Wed Mar 06, 2019 9:22 pm
Forum: Pictures and Videos
Topic: Metopus sp.
Replies: 1
Views: 1141

Re: Metopus sp.

#MeToo-pus?
by iconoclastica
Sun Mar 03, 2019 7:35 pm
Forum: Beginner's corner
Topic: Choosing ring light for Stereo Microscope
Replies: 26
Views: 7542

Re: Choosing ring light for Stereo Microscope

In the living-room I had led spots that were too blue. That was easily solved with one layer of amber gel. If your luminous output is sufficient, you can do such things.