Search found 244 matches

by Dave S
Mon Oct 21, 2019 11:13 am
Forum: Introduce yourself
Topic: Hi just starting in Microscopie Almere The Netherlands
Replies: 6
Views: 132

Re: Hi just starting in Microscopie Almere The Netherlands

Hi ......? and welcome to the forum.

Dave
by Dave S
Thu Oct 17, 2019 9:48 am
Forum: Introduce yourself
Topic: Hello from The Netherlands
Replies: 53
Views: 8766

Re: Hello from The Netherlands

Hi Jan, and welcome.

I was a keen amateur astronomer/astro-imager, until a move from a dark sky location, to one with light pollution, put an end to it.

https://davesimaging.wixsite.com/mysite
by Dave S
Sun Oct 06, 2019 9:05 am
Forum: Introduce yourself
Topic: Hello from West Chester, Pennsylvania!
Replies: 6
Views: 568

Re: Hello from West Chester, Pennsylvania!

Hi Gene, and welcome. :)
by Dave S
Thu Oct 03, 2019 4:44 pm
Forum: Microscopes and optics
Topic: My Latest Microscope
Replies: 7
Views: 353

Re: My Latest Microscope

Very nice Alan, and a bargain too!! :)
by Dave S
Thu Oct 03, 2019 12:46 pm
Forum: Pictures and Videos
Topic: Festuca Grass Hand Sections
Replies: 23
Views: 704

Re: Festuca Grass Hand Sections

Nice work John!!
by Dave S
Thu Oct 03, 2019 9:17 am
Forum: Introduce yourself
Topic: I got it!!! Thanks for the help Microbehunter!
Replies: 4
Views: 346

Re: I got it!!! Thanks for the help Microbehunter!

Hi Thomas, and welcome. :)
by Dave S
Sat Sep 28, 2019 12:21 pm
Forum: Introduce yourself
Topic: Hello from Dublin, Ireland
Replies: 4
Views: 226

Re: Hello from Dublin, Ireland

Hi Richie, and welcome :)

Btw, some non mechanical stages have pre-drilled and tapped holes ready to take a commonly available adjuster, to both hold the slide in position, and move it both laterally, back and forth. From what I remember, they are not expensive.
by Dave S
Sun Sep 22, 2019 12:08 pm
Forum: Introduce yourself
Topic: Hello from the Pharaohs' land , Egypt
Replies: 3
Views: 242

Re: Hello from the Pharaohs' land , Egypt

Well, I can't answer your questions Abdullah, but welcome to the group anyway. :)
by Dave S
Tue Sep 17, 2019 3:45 pm
Forum: Introduce yourself
Topic: Hello from Connecticut
Replies: 8
Views: 1109

Re: Hello from Connecticut

Hi Mickey, and welcome . :)
by Dave S
Sun Sep 15, 2019 4:20 pm
Forum: Introduce yourself
Topic: Hello from Spain
Replies: 2
Views: 572

Re: Hello from Spain

Hi Josemary, and welcome. :)
by Dave S
Sat Sep 14, 2019 8:49 pm
Forum: Introduce yourself
Topic: Hello from Didier
Replies: 2
Views: 516

Re: Hello from Didier

Hi Didier, and welcome :)
by Dave S
Fri Sep 13, 2019 4:19 pm
Forum: Microscopy accessories
Topic: Patch Stops
Replies: 4
Views: 464

Re: Patch Stops

Hopefully you can share some images and techniques if you get some good results with the oblique patches. I only had intermittent and fleeting luck with my Chinese scope with the oblique patches. But maybe the Optiphot will perform better since it already gives better dark field. Well, I can but tr...
by Dave S
Fri Sep 13, 2019 4:17 pm
Forum: Microscopy accessories
Topic: Patch Stops
Replies: 4
Views: 464

Re: Patch Stops

Cool looking set. They probably are made from PLA since they look like they are 3D printed. 3D printings can have "stringing" which are little threads of plastic as the head switches from one part to the other. A file or sand paper can remove that. Also the crisscross pattern is the 3D head printin...
by Dave S
Fri Sep 13, 2019 10:02 am
Forum: Microscopy accessories
Topic: Patch Stops
Replies: 4
Views: 464

Patch Stops

Arrived today, a set of 32m Dark Field Patch Stops, and Oblique Illumination Stops, cut from 1.5mm thick plastic (probably Acetal/Delrin)

7, 8, 11, 13, and 20mm Dark Field patch stops, and four different Oblique stops.
ptach-stops.jpg
ptach-stops.jpg (57.25 KiB) Viewed 464 times
by Dave S
Thu Sep 12, 2019 6:15 pm
Forum: Pictures and Videos
Topic: Another Birdbath Rotifer
Replies: 2
Views: 338

Re: Another Birdbath Rotifer

They certainly do David, sweeping a side other 'critters' around them. :)
by Dave S
Thu Sep 12, 2019 12:18 pm
Forum: Pictures and Videos
Topic: Another Birdbath Rotifer
Replies: 2
Views: 338

Another Birdbath Rotifer

At least the tail end, as he was diving into the algae.

Taken a 600x

I'm not sure what the little 'green guys' are, so perhaps you could ID them for me.

https://photos.app.goo.gl/kwz6vzTqruNZN8xv6
by Dave S
Thu Sep 12, 2019 12:17 pm
Forum: Pictures and Videos
Topic: Another Birdbath Rotifer
Replies: 0
Views: 508

Another Birdbath Rotifer

At least the tail end, as he was diving into the algae.

Taken a 600x

I'm not sure what the little 'green guys' are, so perhaps you could ID them for me.

https://photos.app.goo.gl/LyFYdrJC5hwsa7xF9
by Dave S
Thu Sep 12, 2019 10:57 am
Forum: Digital processing
Topic: Photoshop CS6 v Helicon v Zerene,and the rest
Replies: 21
Views: 1295

Re: Photoshop CS6 v Helicon v Zerene,and the rest

From the limited amount of testing I've done so far, I can't really see any difference in the stacked result, between Picolay, and Helicon. I should add that I only aligned, and stacked in both, applying none of the enhancement tools, as Photoshop can deal with this. This has so far been limited to ...
by Dave S
Wed Sep 11, 2019 7:57 pm
Forum: Pictures and Videos
Topic: Rotifer from the Bird Bath
Replies: 3
Views: 285

Re: Rotifer from the Bird Bath

It was to 40x Plan Objective, so effectively 400x. As it was alive and swimming about, it wasn't easy to grab as shot, and that was the 'best of the bunch' That was with the camera straight into the photo tube, which was giving very bright area in the centre, and a strange Airey Disc pattern further...
by Dave S
Wed Sep 11, 2019 6:10 pm
Forum: Pictures and Videos
Topic: Rotifer from the Bird Bath
Replies: 3
Views: 285

Rotifer from the Bird Bath

Live and swimming.
rotifer-2.jpg
rotifer-2.jpg (78 KiB) Viewed 283 times
by Dave S
Wed Sep 11, 2019 8:59 am
Forum: Microscopes and optics
Topic: Metallurgical Objectives
Replies: 4
Views: 430

Re: Metallurgical Objectives

Thanks guys, informative input, as always.

Much appreciated.

When the adapter arrives, I can take the 4x 160 plan objective off of the microscope, and experiment with the principle.
by Dave S
Tue Sep 10, 2019 8:55 pm
Forum: Microscopes and optics
Topic: Metallurgical Objectives
Replies: 4
Views: 430

Metallurgical Objectives

Am I correct in thinking that Metallurgical objectives have a greater working distance than standard objectives. :?:

If I attach an objective lens to a dslr via T2 to RMS adapter, does it matter if it is infinity corrected, or standard 160mm :?:
by Dave S
Tue Sep 10, 2019 6:21 pm
Forum: Microscopes and optics
Topic: Stereo Triocular or Binocular
Replies: 25
Views: 904

Re: Stereo Triocular or Binocular

A bit of DiY today, re-configuring my horizontal macro slide rail, into a vertical one, with a base for specimen placement. I can focus my 1:1 macro lens as close as 120mm from the subject, and if as suggested I get a long working distance microscope objective, such as a Metallurgical one, I can hav...
by Dave S
Tue Sep 10, 2019 9:13 am
Forum: Microscopes and optics
Topic: Stereo Triocular or Binocular
Replies: 25
Views: 904

Re: Stereo Triocular or Binocular

Thank you 'one and all' for your valued input, it has been much appreciated. Prior to starting this 'thread' I had e-mailed Brunel microscopes,from whom I had purchased the SP100 compound micrscope, to ask about a particular stereo microscope in their range. Just as I did here, I explained what I wa...
by Dave S
Mon Sep 09, 2019 9:57 pm
Forum: Microscopes and optics
Topic: Stereo Triocular or Binocular
Replies: 25
Views: 904

Re: Stereo Triocular or Binocular

What I really need is an LM Macroscope :D Given what you guys say, which is supported by several technical articles that I have now read, I am perplexed as to why there are so many new triocular stereo microscopes for sale, if they are photographicaly inferior. Are they just used for 'rough and read...
by Dave S
Mon Sep 09, 2019 7:11 pm
Forum: Microscopes and optics
Topic: Stereo Triocular or Binocular
Replies: 25
Views: 904

Re: Stereo Triocular or Binocular

Well, there is some 'thinking material' there Viktor, thank you. I do have a 4x plan/160 objective on the SP100 scope, and yes I could mount that on bellows, or an extension tube, but then I have to consider how to mount, and illuminate the specimen. Also, how to mount, and focus the camera. I guess...
by Dave S
Mon Sep 09, 2019 6:20 pm
Forum: Microscopes and optics
Topic: Stereo Triocular or Binocular
Replies: 25
Views: 904

Re: Stereo Triocular or Binocular

Hmm!!, you guys have got me thinking now, and that imaging through a stereo microscope might be a bit disappointing to me as serious amateur photographer :? I was only thinking of spending around £500 on a scope (new of course ;) ), so perhaps getting low power plan objective for the main scope, say...
by Dave S
Mon Sep 09, 2019 3:44 pm
Forum: Microscopes and optics
Topic: Stereo Triocular or Binocular
Replies: 25
Views: 904

Re: Stereo Triocular or Binocular

Thanks for that info 'scaro'.
by Dave S
Mon Sep 09, 2019 3:07 pm
Forum: Microscopes and optics
Topic: Stereo Triocular or Binocular
Replies: 25
Views: 904

Re: Stereo Triocular or Binocular

Yes Bob, it would basically be an extension of my macro photography, into the realm of 'extreme macro. I would use the same APS-C DSLR that I use with the compound microscope. I know to avoid twin objective Greenough design, as apparently this is not ideal for photography, and the CMO design which u...