Search found 481 matches

by Roldorf
Tue Jul 07, 2020 1:28 pm
Forum: Introduce yourself
Topic: Hi, I'm new here
Replies: 7
Views: 201

Re: Hi, I'm new here

Good to know it was a bit confusing. :P :idea:
by Roldorf
Sat Jul 04, 2020 12:53 pm
Forum: Beginner's corner
Topic: The Dirty Cover Glass Blues
Replies: 25
Views: 781

Re: The Dirty Cover Glass Blues

I have never had a problem with dirty cover glasses even ones that I have used. Soap water and kitchen towel to dry works for me.
by Roldorf
Sun Jun 28, 2020 4:54 pm
Forum: Illumination Techniques
Topic: Incident illumination
Replies: 37
Views: 1114

Re: Incident illumination

yes those German to English translations can be a bit 'trippy'. :lol:
by Roldorf
Sun Jun 28, 2020 12:04 pm
Forum: Illumination Techniques
Topic: Incident illumination
Replies: 37
Views: 1114

Re: Incident illumination

I wonder. What is a slow motion head?
by Roldorf
Sat Jun 27, 2020 1:53 pm
Forum: Illumination Techniques
Topic: Incident illumination
Replies: 37
Views: 1114

Re: Incident illumination

according to the artical they say: 'This ample scope in the choice of the illumination is very advantageous, since certain structures of objects are known to be discernible only when struck bv light incident at a definite azimuthal angle and a definite inclination, which are frequently unknown at th...
by Roldorf
Sat Jun 27, 2020 12:42 pm
Forum: Illumination Techniques
Topic: Incident illumination
Replies: 37
Views: 1114

Re: Incident illumination

Hi MicaelG.
If you are looking for narrow beam LED's you can get them down to 15 degrees from Conrad.
See here:-

https://www.conrad.de/de/p/thomsen-led- ... 80001.html
by Roldorf
Tue Jun 23, 2020 11:15 am
Forum: Pictures and Videos
Topic: Pollen. There's lots of it about.
Replies: 126
Views: 70095

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

Must be nice to have access to a scanning electron microscope. :P :P :P You don't say if the SEM is at work or in your back room. Very nice image, I think the flakes are probably pollen kit (maybe coated in gold).
by Roldorf
Sun Jun 21, 2020 11:10 am
Forum: Pictures and Videos
Topic: Pollen. There's lots of it about.
Replies: 126
Views: 70095

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

From our garden growing through the lawn in many places. It's manly in alpine regions, so must have been a plant purchased in the past (not by us) and has spread through the garden.

Image
by Roldorf
Sun Jun 21, 2020 11:07 am
Forum: Pictures and Videos
Topic: Pollen. There's lots of it about.
Replies: 126
Views: 70095

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

Another Update on the Foxglove. It is now 206 cm and still growing.
by Roldorf
Wed Jun 17, 2020 7:02 am
Forum: Microscopes and optics
Topic: HELP: Missing centering tool for Nikon Optiphot objectives
Replies: 39
Views: 1640

Re: HELP: Missing centering tool for Nikon Optiphot objectives

Use a file instead of a cutting tool, much less torque.
by Roldorf
Tue Jun 16, 2020 8:46 am
Forum: Camera systems and imaging
Topic: battery adapter
Replies: 51
Views: 2450

Re: battery adapter

Hans. I give up. It sounds as though you are suggesting that I can get a lethal shock from getting out of my car and touching the metal of the door. :x I never suggested that 75RR goes around his house touching all his electrical items to see if he gets a shock, I was simply suggesting that he may g...
by Roldorf
Mon Jun 15, 2020 9:23 pm
Forum: Camera systems and imaging
Topic: battery adapter
Replies: 51
Views: 2450

Re: battery adapter

I said from other items, NOT the camera. Again you cannot get a shock from a 5V USB cable, and you can not put 240 volts through a USB cable without melting it and blowing up the camera. :evil:
by Roldorf
Mon Jun 15, 2020 4:40 pm
Forum: Microscopes and optics
Topic: HELP: Missing centering tool for Nikon Optiphot objectives
Replies: 39
Views: 1640

Re: HELP: Missing centering tool for Nikon Optiphot objectives

A T4 torx wrench is .053 inches across the points so all you need is a T4 torx screw.

Edit: See here for sizes: https://en.wikipedia.org/wiki/Torx
by Roldorf
Mon Jun 15, 2020 4:10 pm
Forum: Camera systems and imaging
Topic: battery adapter
Replies: 51
Views: 2450

Re: battery adapter

Hi 75RR. Interesting reading. In the summer (like now) I always get a static shock when getting out of my car, not so in the winter. I will have to try touching the window before the door. :D Edit: Nylon is one of the worst offenders for causing static electricity shocks. The old trick of rubbing yo...
by Roldorf
Mon Jun 15, 2020 1:55 pm
Forum: Camera systems and imaging
Topic: battery adapter
Replies: 51
Views: 2450

Re: battery adapter

I don't see how a 5volt USB adapter can give you a shock unless you stick your fingers in the socket that you have the USB adapter plugged into.
by Roldorf
Sun Jun 14, 2020 1:21 pm
Forum: Pictures and Videos
Topic: Pollen. There's lots of it about.
Replies: 126
Views: 70095

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

An update on the foxglove growing in our back garden. When I did the first post it was 153 cm tall. It is now 184cm and still has half the flower stack to blume.
by Roldorf
Sun Jun 14, 2020 11:40 am
Forum: Camera systems and imaging
Topic: battery adapter
Replies: 51
Views: 2450

Re: battery adapter

Hi 75RR, Static electricity. Dry air, nylon carpet, plastic shoes. Your camera with the adapter attached could only supply a maximum of 5v x 500ma not enough to even give you a tingle. Try putting your wet tongue over the contacts of a 9v battery you will see what I mean, tastes yuck but no harm don...
by Roldorf
Sat Jun 13, 2020 8:14 pm
Forum: Beginner's corner
Topic: About camera on a microscope
Replies: 14
Views: 719

Re: About camera on a microscope

Hi Don, you should watch Olivers channel on microscopy. It's not possible to see any more detail with a so called magnification above 1000x because of the properties of light. Anything above 1000 is empty magnification, in other words there is no more detail to see.
by Roldorf
Fri Jun 12, 2020 8:04 pm
Forum: Pictures and Videos
Topic: Rocks, Minerals and Fossils
Replies: 5
Views: 290

Re: Rocks, Minerals and Fossils

Good idea I have a couple of old car mounts I will have to take a look at, thanks for the tip. :)
by Roldorf
Fri Jun 12, 2020 2:02 pm
Forum: Pictures and Videos
Topic: Rocks, Minerals and Fossils
Replies: 5
Views: 290

Re: Rocks, Minerals and Fossils

Hi 75RR I have looked at holders but couldn't find anything at the moment, will need more thinking about especially as the eyepiece head moves up and down when focusing. The biggest problem with the focus is the small screen on the camera. There is also an HDIM out on the camera but I have not tried...
by Roldorf
Fri Jun 12, 2020 11:35 am
Forum: Pictures and Videos
Topic: Rocks, Minerals and Fossils
Replies: 5
Views: 290

Rocks, Minerals and Fossils

Just working through the samples from our latest field trip to the Harz mountains and trying to figure out how to measure and present them. Here is my first attempt based on how I displayed the pollen series of posts. The main image is a closeup of the mineral with a scale bar added. The scale bar s...
by Roldorf
Thu Jun 11, 2020 11:35 am
Forum: Home-made microscope adaptations
Topic: How to make miniature square wrenches
Replies: 10
Views: 431

Re: How to make miniature square wrenches

Everyone want's to 'Buy' these days. Where has skill and innovation gone? Well done for giving something that was sitting in a box and likely to end up in landfill, a second life. Congratulations on your innovative skills we should all try harder, after all that's what brought us down from the trees...
by Roldorf
Tue Jun 09, 2020 6:57 pm
Forum: My microscope
Topic: Summer holiday - packing list for the microscopist
Replies: 8
Views: 373

Re: Summer holiday - packing list for the microscopist

We are thinking about a trip to Denmark in late August (fossils again). Hoping that all is better by then. We just had confirmation that our mineral course in Clausthal-Zellerfeld in September has been postponed until next year :cry: accomodation was all booked and arranged will just have to go it a...
by Roldorf
Tue Jun 09, 2020 6:53 pm
Forum: My microscope
Topic: Summer holiday - packing list for the microscopist
Replies: 8
Views: 373

Re: Summer holiday - packing list for the microscopist

Hi Bob, you can't have everything, we went for fossils (and minerals of course) and only found tiny plant remains. Good job we had the scope with us as you needed it to see them. :geek:
by Roldorf
Tue Jun 09, 2020 6:22 pm
Forum: My microscope
Topic: Summer holiday - packing list for the microscopist
Replies: 8
Views: 373

Re: Summer holiday - packing list for the microscopist

Hi Bob,

We just got back from the Harz and we took our stereo microscope with us 'no slides required', along with a hammer.
Weather was wonderful and the rocks outstanding. :D
by Roldorf
Tue Jun 09, 2020 6:11 pm
Forum: Pictures and Videos
Topic: Pollen. There's lots of it about.
Replies: 126
Views: 70095

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

One from the garden amazing how many plants are used for medicinal purposes.

Image
by Roldorf
Sun Jun 07, 2020 9:38 am
Forum: About the website, the magazine and this forum
Topic: External Image Hosting Postimage.org
Replies: 0
Views: 249

External Image Hosting Postimage.org

I have been using postimage.org to host my images for this forum. Until recently all has worked fine. Image shows on my posts, you could even click on the image and see it in full resolution on the postimage website until a few days ago. Now when you click on the image all you see is the postimage l...
by Roldorf
Fri Jun 05, 2020 11:47 am
Forum: Illumination Techniques
Topic: Flashlight as permanent illuminator inside the base of the microscope ?
Replies: 24
Views: 1237

Re: Flashlight as permanent illuminator inside the base of the microscope ?

Hi no, no focus just searching around my not so extensive bits and pieces for a diffuser last thing I tried looked white but was in fact 'PINK' under the light, so the search goes on after I have had some lunch.