Search found 3831 matches

by apochronaut
Fri Jan 22, 2021 3:01 am
Forum: Microscopes and optics
Topic: Epi DIC on the Balplan!
Replies: 3
Views: 48

Re: Epi DIC on the Balplan!

I have one . I have to scan at the library which has stopped doing that for a while. I did send it to Bill Porter about a year or so ago. The person who did it , doubled the pages and didn't do a very good job but apparently Bill, fixed it up some. I can send you my file but If you message Bill , I ...
by apochronaut
Fri Jan 22, 2021 1:16 am
Forum: Microscopes and optics
Topic: CAS Reichert Diastar 420 Nomarski DIC
Replies: 7
Views: 101

Re: CAS Reichert Diastar 420 Nomarski DIC

I think normally they were shipped with standard 45mm Reichert Planachros, painted up with different objective colour codes and CAS branded on them. A black ring on the 10X .25 for instance. They even used the former cat.# 1303 , 63X .80 SPL rebranded CAS and fitted with an 11mm extension, which is ...
by apochronaut
Fri Jan 22, 2021 1:05 am
Forum: My microscope
Topic: Condenser Question
Replies: 10
Views: 1407

Re: Condenser Question

I have seen a spot in the middle of the field a couple of times and each time it turned out to be a changed air space in the condenser. One of the lenses was loose or had dropped down to contact a lower lens. Each time it was an achromat, so a more complex lens system than the 1970. The top lens of ...
by apochronaut
Thu Jan 21, 2021 2:55 am
Forum: Microscopes and optics
Topic: DIC Microscope
Replies: 8
Views: 164

Re: DIC Microscope

Plas DIC or the Pluta slit condenser Interference contrast system do not use condenser prisms. They use a slit condenser .
by apochronaut
Thu Jan 21, 2021 12:48 am
Forum: Microscopes and optics
Topic: What even is this: Plan Apo 40x/1.0 W infinity f=180 unbranded m25 75mm long
Replies: 9
Views: 146

Re: What even is this: Plan Apo 40x/1.0 W infinity f=180 unbranded m25 75mm long

It looks more than a little like a Chinese industrial objective. The resason I say this is that I have been looking at a lot of Chinese objectives lately. First there are those water immersion objectives and then I have been putting together a set of planfluors. During the process I came across some...
by apochronaut
Thu Jan 21, 2021 12:11 am
Forum: Microscopes and optics
Topic: DIC Microscope
Replies: 8
Views: 164

Re: DIC Microscope

Here is the Nomarski DIC Diastar. https://www.ebay.com/itm/CAS-Reichert-Diastar-420-Nomarski-DIC-Infinity-Microscope-4x-10x-20x-40x-100x/324137582766?hash=item4b781b00ae:g:f8UAAOSwtUpemFqb&redirect=mobile It is likely that the Microstar plas DIC is at least partially legit. Plas DIC uses a slit cond...
by apochronaut
Wed Jan 20, 2021 9:18 pm
Forum: Microscopes and optics
Topic: How to check out Zeiss darkfield 1.2-1.4 NA "ultracondenser" without a Zeiss microscope?
Replies: 24
Views: 409

Re: How to check out Zeiss darkfield 1.2-1.4 NA "ultracondenser" without a Zeiss microscope?

It isn't necessary to image rhe field diaphragm in order to set up DF , like it is with phase. You never oil phase so it needs to be adjusted critically in order to have an even well corrected illuminated field and focus the condenser.. If your illumination system is wide open, centered , and focuse...
by apochronaut
Wed Jan 20, 2021 2:04 pm
Forum: Microscopes and optics
Topic: Off-brand eyepiences in Microstar IV (410)
Replies: 6
Views: 154

Re: Off-brand eyepiences in Microstar IV (410)

I just thought I would add a caution. I know there are more than a few people out there looking for 15X eyepieces for any one of the AO infinity microscopes. They are getting hard to find. I wince at the thought that quite a few systems with both 10 and 15X eyepiece sets went out to labs and the 15'...
by apochronaut
Wed Jan 20, 2021 1:28 pm
Forum: Microscopes and optics
Topic: How to check out Zeiss darkfield 1.2-1.4 NA "ultracondenser" without a Zeiss microscope?
Replies: 24
Views: 409

Re: How to check out Zeiss darkfield 1.2-1.4 NA "ultracondenser" without a Zeiss microscope?

There were a couple of older mirror type condensers marked Spencer, going back to the 20's and used until the 214F arrived on the scene. They were likely spheroid, I don't know. They are easy to modify to fit on the series 10 and 20 by using the fittings attached to a 214F. In use, there is a subtle...
by apochronaut
Wed Jan 20, 2021 4:51 am
Forum: Microscopes and optics
Topic: How to check out Zeiss darkfield 1.2-1.4 NA "ultracondenser" without a Zeiss microscope?
Replies: 24
Views: 409

Re: How to check out Zeiss darkfield 1.2-1.4 NA "ultracondenser" without a Zeiss microscope?

I think bispheric refers to the surfaces of the two reflective surfaces. One convex, the other concave. The first is a first surface mirror and the other a second surface mirror albeit fully glass embedded. That is the only type of true cardioid I know of. I think the bispheric designation is to sep...
by apochronaut
Tue Jan 19, 2021 9:51 pm
Forum: Microscopes and optics
Topic: Off-brand eyepiences in Microstar IV (410)
Replies: 6
Views: 154

Re: Off-brand eyepiences in Microstar IV (410)

The 184 eyepieces i have, are tighter than the 182s but they will fit. Ditto for the B & L , 31-15 - 62.
by apochronaut
Tue Jan 19, 2021 5:35 pm
Forum: Microscopes and optics
Topic: Off-brand eyepiences in Microstar IV (410)
Replies: 6
Views: 154

Re: Off-brand eyepiences in Microstar IV (410)

The 181 and 182 eyepieces are not huygens. Huygens are two plano/convex lenses with the plano surface uppermost, separated by an air space with the focal plane between the two lenses. The only way you can have a W.F. huygens eyepiece is to increase the diameter of the eyepiece. Some of the low to mi...
by apochronaut
Tue Jan 19, 2021 3:15 am
Forum: Beginner's corner
Topic: Reichert received and a question
Replies: 31
Views: 485

Re: Reichert received and a question

You have the inner race of the old bearing do you not? You have the new bearing? Do you have a vernier caliper or some type of inside caliper?
Can you measure the two if them. I mic'ed the i.d. of the inside race of the old bearing I had kept, at exactly .125.
by apochronaut
Tue Jan 19, 2021 2:57 am
Forum: Microscopes and optics
Topic: How to check out Zeiss darkfield 1.2-1.4 NA "ultracondenser" without a Zeiss microscope?
Replies: 24
Views: 409

Re: How to check out Zeiss darkfield 1.2-1.4 NA "ultracondenser" without a Zeiss microscope?

The Reichert condenser in that listing is not the same as 60-709, based on the machining of the actual condenser housing. There is not a picture of the bottom, so it can't be determined if it is a toric type or not. The 1096 is all black and is a sealed unit with an integrated dovetail, except for t...
by apochronaut
Mon Jan 18, 2021 8:10 pm
Forum: Microscopes and optics
Topic: How to check out Zeiss darkfield 1.2-1.4 NA "ultracondenser" without a Zeiss microscope?
Replies: 24
Views: 409

Re: How to check out Zeiss darkfield 1.2-1.4 NA "ultracondenser" without a Zeiss microscope?

As an aside and for future reference. The AO/Reichert cat. # 1096 condenser began life as the AO K2172 broad field DF condenser issued for the series 10/20. Both feature a toric field lens in the entry aperture and can fill the field of a 10X objective through a 10X 20mm f.o.v. eyepiece. The K2172 i...
by apochronaut
Mon Jan 18, 2021 7:14 pm
Forum: For forum members who want to buy and sell equipment
Topic: where can I buy metric cheese head screws
Replies: 9
Views: 147

Re: where can I buy metric cheese head screws

I have 6 x 3M .05. There is a slightly undercut unthreaded shank about 1mm long. The threaded section is about 4mm more. The head is a 5mm slot type about 1mm thick, slightly domed. They appear to be stainless steel.
by apochronaut
Mon Jan 18, 2021 6:46 pm
Forum: For forum members who want to buy and sell equipment
Topic: where can I buy metric cheese head screws
Replies: 9
Views: 147

Re: where can I buy metric cheese head screws

I will look. 3M .05 or .06 and 4M .07 or .075?
by apochronaut
Mon Jan 18, 2021 6:01 pm
Forum: For forum members who want to buy and sell equipment
Topic: where can I buy metric cheese head screws
Replies: 9
Views: 147

Re: where can I buy metric cheese head screws

That kind of thing I have been getting from China on ebay lately. You can get small or large quantities for peanuts, if you don't mind waiting a bit for them. We do have a Brafasco, and a few other fastener specialists nearby but odd things like that usually need to be ordered and often in quantitie...
by apochronaut
Mon Jan 18, 2021 2:44 pm
Forum: Miscellaneous
Topic: Mental struggles and microscopy
Replies: 16
Views: 348

Re: Mental struggles and microscopy

To go back to the original post. I have a 39 year old daughter who I engage sometimes in microscopy. She is very interested in nature ; insects, birds, all kinds of animals but not so much very small things . I have set here up with her choice of the stereo microscopes I have but she seldom takes to...
by apochronaut
Mon Jan 18, 2021 1:49 pm
Forum: Beginner's corner
Topic: Reichert received and a question
Replies: 31
Views: 485

Re: Reichert received and a question

A pin? The only pin is the 1/8" bearing shaft with a small circlip relief near the end. That bearing shaft fits through a hole in the mounting bracket up to it's shoulder and is secured with a nut. The bearing fits on the shaft and is secured with a circlip. By removing the bearing, the vertical foc...
by apochronaut
Sun Jan 17, 2021 6:21 pm
Forum: Beginner's corner
Topic: Reichert received and a question
Replies: 31
Views: 485

Re: Reichert received and a question

I just bought a pack of 10 sealed 693ZZ bearings from China for 3.17 + free shipping. Wow, that's $0.31 per bearing. What are the quality of these things? The old saying "you get what you pay for" comes to mind here. You are making unfounded assumptions The same bearings are available from U.S. sel...
by apochronaut
Fri Jan 15, 2021 8:27 pm
Forum: Microscopes and optics
Topic: AO Spencer Series 15/35 Questions
Replies: 5
Views: 468

Re: AO Spencer Series 15/35 Questions

I checked the head I have for a 15. The adjustable eyepiece tube should extend above and below the rim of the static tube in it's travel. The part of that tube that moves up and down can be loosened and moved up and down on the inner tube, or rotated to index the registration marks. If the grease is...
by apochronaut
Fri Jan 15, 2021 5:34 pm
Forum: Microscopes and optics
Topic: Silicone immersion objectives - any experience?
Replies: 29
Views: 465

Re: Silicone immersion objectives - any experience?

I use a 63 x 1.0 glycerin immersion objective sometimes. It is a planachromat. I also have a 40X 1.0 oil planapo. When the 40X planapo is bumped to 60X with the correct 15X eyepieces, the image quality is superior to that of the 63X 1.0 glycerin. The glycerin objective does hold up to pushing with 1...
by apochronaut
Thu Jan 14, 2021 12:20 pm
Forum: Beginner's corner
Topic: Reichert received and a question
Replies: 31
Views: 485

Re: Reichert received and a question

James Lahti has his vineyard near to me. He still does Imax stuff. I just bought a pack of 10 sealed 693ZZ bearings from China for 3.17 + free shipping. Ridiculous, really. They are metric, so 3mm x 8mm x 4mm. The original is 3.17mm x 7.938mm x 3.572mm . There is enough room to accomodate the extra ...
by apochronaut
Thu Jan 14, 2021 11:30 am
Forum: Beginner's corner
Topic: Reichert received and a question
Replies: 31
Views: 485

Re: Reichert received and a question

There will be a light grease coating on the cam and the bearing should be well packed. If the bearing was stuck and dragging on the cam, that might have been the source of the scraping. Bearing size is 1/8" bore, 5/16" o.d. and 9/64" width, if you ever need one. If the bearing is cockeyed it may hav...
by apochronaut
Thu Jan 14, 2021 10:22 am
Forum: Camera systems and imaging
Topic: Reichert diastar 420 sony camera adapter
Replies: 24
Views: 1136

Re: Reichert diastar 420 sony camera adapter

I found the shutter and photo optic assembly to crop a little too much. The photo tube however, with the eyepiece works well.
by apochronaut
Thu Jan 14, 2021 10:18 am
Forum: Microscopes and optics
Topic: Nikon gene sequencer objectives
Replies: 47
Views: 1699

Re: Nikon gene sequencer objectives

Incorrect. I'm just saying I'm not buying what Nikon is advertising that's all.
by apochronaut
Thu Jan 14, 2021 10:16 am
Forum: Beginner's corner
Topic: Reichert received and a question
Replies: 31
Views: 485

Re: Reichert received and a question

You don't have to dig too deep to do an inspection. Four Philips screws remove the back cover and four more like it, drop down the circuit board. All is then revealed, at least in the bowels, where the likely problem is. The cam follower mentioned above is a ball bearing. They are as vulnerable to c...
by apochronaut
Wed Jan 13, 2021 10:32 pm
Forum: Microscopes and optics
Topic: Nikon gene sequencer objectives
Replies: 47
Views: 1699

Re: Nikon gene sequencer objectives

Sure, the eclipse 100 is made in China and uses a simplified tube lens as well as lower FoV eyepieces, and it's also equipped with lower end objectives with smaller image circles. It has lower end optics made to lower overall standards, which is kind of the point. I'm not sure what relevance that h...