Search found 212 matches

by Zuul
Wed Jun 10, 2020 8:04 pm
Forum: Illumination Techniques
Topic: Best Polarizing Filters
Replies: 11
Views: 2122

Re: Best Polarizing Filters

Most photographic filters are circular polarizers. They did make some linear polarizers, too, but they are rare. Linear is typical for this application. If you use circular, I believe the “front” of the filter needs to face the specimen for best results.
by Zuul
Wed Jun 10, 2020 3:06 pm
Forum: Microscopes and optics
Topic: AO Spencer Series 4: Am I Missing a Mirror?
Replies: 8
Views: 1025

Re: AO Spencer Series 4: Am I Missing a Mirror?

The color is most likely Methylene Blue that somebody spilled. My AO 10 has a very similar ring, but purple; probably Crystal Violet. Any mirror will work, but I suspect the original was a very thin 1st surface mirror for the highest efficiency. (They have silver on the surface so the light doesn’t ...
by Zuul
Mon Jun 08, 2020 3:11 am
Forum: Pictures and Videos
Topic: New perspective on our koi pond
Replies: 2
Views: 303

New perspective on our koi pond

I'm still very new to this, so please feel free to offer suggestions. Stack of about 20 frames. AO 10 using 20x 1022 and 214F DF condenser.

Image20200608-stack 5.jpg by Mickey, on Flickr
by Zuul
Sun Jun 07, 2020 7:42 pm
Forum: Pictures and Videos
Topic: Film soap.
Replies: 7
Views: 752

Re: Film soap.

Great images. Standard brightfield?
by Zuul
Sat Jun 06, 2020 7:52 pm
Forum: Microscopes and optics
Topic: List of Reichert/Leica 45mm Parfocal Infinity RMS Objectives?
Replies: 3
Views: 799

Re: List of Reichert/Leica 45mm Objectives?

Apochronaut certainly knows more than anyone here about these objectives. I wasn't able to find a single post where they were all listed, though. I put together this table from all the sources i could gather. Hopefully it will be helpful to others. If anybody has additions or corrections, please let...
by Zuul
Thu Jun 04, 2020 5:14 am
Forum: Microscopes and optics
Topic: List of Reichert/Leica 45mm Parfocal Infinity RMS Objectives?
Replies: 3
Views: 799

List of Reichert/Leica 45mm Parfocal Infinity RMS Objectives?

I believe I’m spoiled by P.S.Neeley’s encyclopedic collection of AO information. Is there any resource where one could find a reasonably complete list of the more modern 45mm parfocal Infinity RMS objectives sold as Reichert, Leica or otherwise for the Microstar IV, Diastar, ATC2000, etc?
by Zuul
Wed Jun 03, 2020 7:32 pm
Forum: Home-made microscope adaptations
Topic: Labofot 2 lamp house
Replies: 3
Views: 1104

Re: Labofot 2 lamp house

Most 3D prints will not survive high temperatures, and definitely not parts made on the machines typically owned by hobbyists. (Makerbot and the like)
by Zuul
Wed Jun 03, 2020 1:11 am
Forum: Camera systems and imaging
Topic: AO Triocular vs Beam Splitter
Replies: 46
Views: 4803

Re: AO Triocular vs Beam Splitter

I decided to put something interesting on the ‘scope for a change. Obviously, there are lots of things yet to learn.
A7FAC1AF-254F-48F5-9DF5-A9BD913884A4.jpeg
A7FAC1AF-254F-48F5-9DF5-A9BD913884A4.jpeg (299.19 KiB) Viewed 1382 times
398D207F-8F37-41C8-9E99-1DF1832CF5CA.jpeg
398D207F-8F37-41C8-9E99-1DF1832CF5CA.jpeg (216.59 KiB) Viewed 1382 times
by Zuul
Tue Jun 02, 2020 8:05 pm
Forum: Camera systems and imaging
Topic: AO Triocular vs Beam Splitter
Replies: 46
Views: 4803

Re: AO Triocular vs Beam Splitter

I have a question for something you can try. If you put the 437 into the side of the optical tube with the diopter, how does it work paired with a 176? Aside from not being parfocal with the 176 (it’s wound to its lowest, and I didn’t try to match focus) it looks fine viewed by eye. I am surprised ...
by Zuul
Tue Jun 02, 2020 3:41 pm
Forum: Camera systems and imaging
Topic: AO Triocular vs Beam Splitter
Replies: 46
Views: 4803

Re: AO Triocular vs Beam Splitter

I didn’t note the particulars of the set up last night, so rather that guess, I reset the camera and shot a couple more. This time the spacer between the phototube and #437 was shorter, so the extremities have been cropped out. The distance from the trinoc shoulder the the top of the eyepiece is 155...
by Zuul
Tue Jun 02, 2020 1:43 pm
Forum: Camera systems and imaging
Topic: AO Triocular vs Beam Splitter
Replies: 46
Views: 4803

Re: AO Triocular vs Beam Splitter

The first noticeable thing is that both are displaying a bit of asymmetry. There is a falloff of corrections in the lower left corner of each image but in the second image it is worse. Something is out of alignment. How were these taken? It seems that you are capturing almost the entire image circl...
by Zuul
Tue Jun 02, 2020 3:52 am
Forum: Camera systems and imaging
Topic: AO Triocular vs Beam Splitter
Replies: 46
Views: 4803

Re: AO Triocular vs Beam Splitter

This is a very quick test of 2 different setups. One uses the #437 as a relay lens, and the other uses a 2X teleconverter. Aside from slightly different framing, can you see significant qualitative differences? Is one better? The “subject” is a laser print. I wanted something that would be reasonabl...
by Zuul
Mon Jun 01, 2020 5:22 pm
Forum: Camera systems and imaging
Topic: AO Triocular vs Beam Splitter
Replies: 46
Views: 4803

Re: AO Triocular vs Beam Splitter

The interior is quite spacious. I may flock it, regardless, once I have some flocking material on hand. After experimenting with the set-up, I might not end up using this tube. With the 10x 437 eyepiece, the area of coverage is too small for my liking, even on a full frame sensor. Even a 5x eyepiece...
by Zuul
Sun May 31, 2020 1:22 am
Forum: Camera systems and imaging
Topic: AO Triocular vs Beam Splitter
Replies: 46
Views: 4803

Re: AO Triocular vs Beam Splitter

Phototube ready.
phototube.jpg
phototube.jpg (171.77 KiB) Viewed 1489 times
by Zuul
Sat May 30, 2020 10:34 pm
Forum: Camera systems and imaging
Topic: AO Triocular vs Beam Splitter
Replies: 46
Views: 4803

Re: AO Triocular vs Beam Spli

Yes. If one of those older condensers is just marked 1.25, then it is a two lens abbe. The 1087 is also a two lens but the bottom lens is noticeably aspheric. I suspect that the front lens is the same on each, since the 1.25 N.A. specification is established by it's angle, so theoretically an inter...
by Zuul
Sat May 30, 2020 9:22 pm
Forum: Introduce yourself
Topic: Hello from Portsmouth Virginia!
Replies: 10
Views: 1804

Re: Hello from Portsmouth Virginia!

If you are a photographer, I suspect the 3mp camera will leave you unimpressed.
by Zuul
Sat May 30, 2020 9:19 pm
Forum: Specimens, samples and slides
Topic: New Diatom Project
Replies: 64
Views: 8239

Re: New Diatom Project

Thanks. I will look into the Falcon tubes. I was going to start the acid processing and need to do it outside, since I don't have a fume hood, but the weather will not cooperate. It's suppose to rain most of the day. I want to start with the HCl 30%, to get rid of any calcium carbonates and any met...
by Zuul
Fri May 29, 2020 4:01 am
Forum: Camera systems and imaging
Topic: AO Triocular vs Beam Splitter
Replies: 46
Views: 4803

Re: AO Triocular vs Beam Splitter

I now have a 1043 trinoc head and there is a Nikon T-mount adapter on its way. The phototube is the last piece I need. Today I realized that my condenser is a simple Abbe. It’s only marking is “N.A. 1.25” so I believe it’s a 1088, but I’m not certain. For reasons I can’t explain, I happen to have a ...
by Zuul
Tue May 26, 2020 8:01 pm
Forum: Illumination Techniques
Topic: Ideal Location for Illumination Filters
Replies: 5
Views: 993

Re: Ideal Location for Illumination Filters

LCD's need polarizing filters to work. You can't simply remove them and expect it to behave the same way. Here is an example:

https://www.youtube.com/watch?v=ydRZkLK7S-w
by Zuul
Sat May 23, 2020 6:09 pm
Forum: Beginner's corner
Topic: Mix’n’match ‘scope
Replies: 2
Views: 529

Mix’n’match ‘scope

I spotted this on fleabay and it piqued my curiosity. All the components seam to be high quality, though I’m not experienced enough to guess about condition. The Zeiss objectives on a Nikon stand/head is the oddity. I understand that Nikon objectives should be fully corrected, hence the head should ...
by Zuul
Wed May 20, 2020 10:33 pm
Forum: Camera systems and imaging
Topic: AO Triocular vs Beam Splitter
Replies: 46
Views: 4803

Re: AO Triocular vs Beam Splitter

Ok, now I'm curious. What would the procedure be without a phase telescope? Eyeball it and call it good because that means you probably aren't doing phase anyway? ;)
by Zuul
Sun May 17, 2020 7:24 pm
Forum: Camera systems and imaging
Topic: AO Triocular vs Beam Splitter
Replies: 46
Views: 4803

Re: AO Triocular vs Beam Splitter

Well, I haven’t picked up a head yet, but I did snag a #437 to use as a projection eyepiece. It seems like that is the safest path for high quality images. On a loosely related note, I was wondering about tube lens compatibility. If a 410 Trinocular head popped up, how far off is the correction when...
by Zuul
Tue May 12, 2020 6:11 pm
Forum: Camera systems and imaging
Topic: AO Triocular vs Beam Splitter
Replies: 46
Views: 4803

Re: AO Triocular vs Beam Splitter

I searched eBay for American optical trinocular and the first. hit was a 1043 head for 60 or best offer and then a 110 scope for a 100 I saw those, but the condition based on their pictures didn't give me a lot of confidence. There are others, too, for not too much more. I'm still weighing options....
by Zuul
Tue May 12, 2020 1:45 am
Forum: Camera systems and imaging
Topic: AO Triocular vs Beam Splitter
Replies: 46
Views: 4803

Re: AO Triocular vs Beam Splitter

Just curious, but would a 110/120 Trino head be an upgrade on my series 10? With the right eyepieces it would give a wider field of view, right?
by Zuul
Mon May 11, 2020 11:26 pm
Forum: Camera systems and imaging
Topic: AO Triocular vs Beam Splitter
Replies: 46
Views: 4803

Re: AO Triocular vs Beam Splitter

apochronaut wrote:
Mon May 11, 2020 11:09 pm
All of those possible camera set ups for the AO system are there; it's just that the telan lens is an integral part of the highly corrected nature of the image.
Thanks for your reply. I am genuinely grateful to have your AO expertise here on the forum!
by Zuul
Mon May 11, 2020 10:38 pm
Forum: Camera systems and imaging
Topic: AO Triocular vs Beam Splitter
Replies: 46
Views: 4803

Re: AO Triocular vs Beam Splitter

You can use one of those but they intercept the beam in advance of the telan lens, which has quite a degree of input into the correction of the final image. In that case, I should probably hold out for a proper triocular head. There isn't much point in going to the trouble of a splitter to then mou...
by Zuul
Mon May 11, 2020 9:44 pm
Forum: Camera systems and imaging
Topic: AO Triocular vs Beam Splitter
Replies: 46
Views: 4803

Re: Triocular vs Beam Splitter

Hobbyst46 wrote:
Mon May 11, 2020 9:32 pm
Is your microscope an AO 10 ? the title says IO10...
Corrected. Thanks!
by Zuul
Mon May 11, 2020 8:59 pm
Forum: Camera systems and imaging
Topic: AO Triocular vs Beam Splitter
Replies: 46
Views: 4803

AO Triocular vs Beam Splitter

I’m enjoying my new-to-me AO 10, and starting to get more interested in using it for photography. It came with the binocular head. My original plan was to use my iPhone or Nikon J4 (1” Sensor) through the eyeport. I made an adapter for the J4 and have played with it briefly. Because it’s not a paraf...