Search found 132 matches

by carlh6902
Thu Aug 17, 2017 1:04 am
Forum: Microscopes and optics
Topic: Zeiss photomicroscope question
Replies: 4
Views: 1682

Re: Zeiss photomicroscope question

Thanks for the informative responses. I'll be getting a PMII in the coming few months (to balance out my Olympus side). What type of Darkfield condensers will work on these?

Carl
by carlh6902
Wed Aug 16, 2017 2:26 am
Forum: Microscopes and optics
Topic: Zeiss photomicroscope question
Replies: 4
Views: 1682

Zeiss photomicroscope question

I am totally unfamiliar with the Zeiss photomicroscope. Can anybody set me straight on the tube lengths for the various incarnations of this beast (I,II,III)?

Carl
by carlh6902
Mon Aug 14, 2017 5:40 am
Forum: Microscopes and optics
Topic: The substage condenser holder for Olympus BH-2
Replies: 0
Views: 949

The substage condenser holder for Olympus BH-2

Here is my latest, on the BH-2 substage condenser holder:

Edit 4/14/2019: Replaced outdated link with a link to the master index, which always contains the most recent versions:

https://drive.google.com/open?id=0B7ckZ ... nFYVDJSRW8


Carl
by carlh6902
Sun Jul 30, 2017 5:57 am
Forum: Microscopes and optics
Topic: Repairing the BH2-SVR XY mechanical stage for the Olympus BH-2
Replies: 5
Views: 1941

Repairing the BH2-SVR XY mechanical stage for the Olympus BH-2

This is the latest bit of the BH-2 I've been able to write up. It covers the BH2-SVaR XY mechanical stage for the Olympus BH-2. Hope it's useful. Edit 4/14/2019: Replaced outdated link with a link to the master index, which always contains the most recent versions: https://drive.google.com/open?id=0...
by carlh6902
Tue Jun 20, 2017 11:55 pm
Forum: Introduce yourself
Topic: Need advice on buying my first microscope
Replies: 6
Views: 2599

Re: Need advice on buying my first microscope

I'm about to plunge into microscopy as a hobby for the first time. I have done a lot of book study on biology and microbiology just because it all fascinates me. Now I want to explore whatever small biological specimens I can with a microscope. My budget for a microscope is below $500. In that rang...
by carlh6902
Fri Jun 02, 2017 4:48 pm
Forum: Microscopes and optics
Topic: Olympus BH-2 Focus Mechanism - Teardown and Rebuild Procedure
Replies: 10
Views: 2849

Re: Olympus BH-2 Focus Mechanism - Teardown and Rebuild Procedure

Any heat at all should help the old grease move. More is obviously better, but in some cases you have to limit the heat due to nearby plastic parts, etc. I picked up a heat gun at Harbor Freight for under ten bucks, and would not try to tear into an Olympus BH-2 scope without it. Not just for the dr...
by carlh6902
Fri Jun 02, 2017 12:45 am
Forum: Microscopes and optics
Topic: Olympus BH-2 Focus Mechanism - Teardown and Rebuild Procedure
Replies: 10
Views: 2849

Re: Olympus BH-2 Focus Mechanism - Teardown and Rebuild Procedure

I will just add this to this old thread. Its a procedure to teardown and rebuild the coaxial focus mechanism in an Olympus BH-2. Edit 4/14/2019: Replaced outdated link with a link to the master index, which always contains the most recent versions: https://drive.google.com/open?id=0B7ckZ6amci3tcVdXd...
by carlh6902
Mon May 08, 2017 3:47 pm
Forum: Microscopes and optics
Topic: Olympus BH-2 Focus Mechanism - Teardown and Rebuild Procedure
Replies: 10
Views: 2849

Re: Olympus BH-2 Focus Mechanism - Teardown and Rebuild Procedure

For anybody who's interested, I just updated the BH2 focus rebuild document linked above to revision 2 (now 3). This revision corrects a few minor errors, as listed on the cover sheet. The link above will take you to this new revision. Edit 4/14/2019: Replaced outdated link with a link to the master...
by carlh6902
Mon May 01, 2017 9:59 pm
Forum: Articles and images to be published
Topic: My Story...
Replies: 11
Views: 28830

Re: My Story...

I made a few minor edits to the story.

Carl
by carlh6902
Mon May 01, 2017 3:13 am
Forum: Articles and images to be published
Topic: My Story...
Replies: 11
Views: 28830

Re: My Story...

It's good to hear from others, and to learn that maybe my story is not quite as unusual as I originally thought. Charlie - my interests gradually moved from biology, and I ended up with a fascination with electronics, to the exclusion of just about everything else, by the time I was in High School. ...
by carlh6902
Thu Apr 27, 2017 5:02 am
Forum: Articles and images to be published
Topic: My Story...
Replies: 11
Views: 28830

My Story...

So, here is my story:

Edit 4/14/2019: Replaced outdated link with a link to the master index, which always contains the most recent versions:

https://drive.google.com/open?id=0B7ckZ ... nFYVDJSRW8


Carl
by carlh6902
Fri Apr 14, 2017 4:23 am
Forum: Microscopes and optics
Topic: Olympus BH-2 Focus Mechanism - Teardown and Rebuild Procedure
Replies: 10
Views: 2849

Olympus BH-2 Focus Mechanism - Teardown and Rebuild Procedure

I finally got around to finishing this one up for distribution: This shows how to do a teardown and rebuild of the coaxial focus mechanism in an Olympus BH-2 stand, to get rid of the old gummy grease and make it perform like-new again. I hope somebody finds this useful. Edit 4/14/2019: Replaced outd...
by carlh6902
Fri Apr 14, 2017 4:18 am
Forum: My microscope
Topic: My first Microscopes
Replies: 26
Views: 7829

Teardown of BH-2 Focus Mechanism

For anyone who is interested in what exactly is inside the BH-2 coaxial focus mechanism:

Edit 4/14/2019: Replaced outdated link with a link to the master index, which always contains the most recent versions:

https://drive.google.com/open?id=0B7ckZ ... nFYVDJSRW8


Carl
by carlh6902
Mon Apr 10, 2017 1:53 am
Forum: My microscope
Topic: My first Microscopes
Replies: 26
Views: 7829

Re: My first Microscopes

Rudi,

Did you happen to take any pictures of the gear you made for the BH-2?

Carl
by carlh6902
Sun Apr 09, 2017 7:16 pm
Forum: My microscope
Topic: My first Microscopes
Replies: 26
Views: 7829

Re: My first Microscopes

Rudi, Thanks for the photos. I never knew these would fit the BH-2. I asked Amscope for physical details of the mounting on these parts a few years ago, and that went nowhere. They couldn't even tell me if their finite objectives rely on ocular compensation for chromatic aberration or not. Just that...
by carlh6902
Tue Apr 04, 2017 4:39 am
Forum: My microscope
Topic: My first Microscopes
Replies: 26
Views: 7829

Re: My first Microscopes

After long delays I had 2 more microscopes arrive this week! The first is an Olympus CH2, this one I bought mostly for the trinocular head, the complete scope was cheaper than any trinocular head I could find on eBay! It was describe as "In good working condition" but it arrived in a less the worki...
by carlh6902
Mon Apr 03, 2017 3:03 am
Forum: My microscope
Topic: My first Microscopes
Replies: 26
Views: 7829

Re: My first Microscopes

The BH-2 contains a small plastic gear inside the right-hand fine focus knob, as well as one in the right coarse focus knob, that the small gear meshes with. But don't worry. They are not like the Nikons. If not mistreated, these parts are plenty durable. They don't shrink and crack like some of the...
by carlh6902
Fri Mar 24, 2017 2:54 am
Forum: Microscopy accessories
Topic: Precision Tools
Replies: 4
Views: 2755

Re: Precision Tools

Yes, those Wiha drivers are definitely worth the coin. Love mine.

Carl
by carlh6902
Wed Mar 22, 2017 1:47 am
Forum: Beginner's corner
Topic: camera -> microscope connection
Replies: 27
Views: 6359

Re: camera -> microscope connection

Just a few things to keep in mind with a BH-2. 1) If you're using Olympus objectives, and not their eyepiece or NFK projection lens, you'll get uncorrected (or improperly corrected) images, with significant lateral chromatic aberration. This will limit your results you can achieve, once you work th...
by carlh6902
Tue Mar 21, 2017 2:15 am
Forum: Beginner's corner
Topic: camera -> microscope connection
Replies: 27
Views: 6359

Re: camera -> microscope connection

Another option for the BH-2 is to use an MTV-3 C-mount adapter with a Nikon J1 or V1 camera. I have not personally tried this, but it sounds good in theory.

Carl
by carlh6902
Tue Mar 21, 2017 2:07 am
Forum: Beginner's corner
Topic: camera -> microscope connection
Replies: 27
Views: 6359

Re: camera -> microscope connection

Crater Eddie,
The 1.67x NFKs are indeed very rare, and damned expensive when you find them. You're probably better off just getting a second-hand full-frame Canon body, for about the same cost either way.

Carl
by carlh6902
Tue Mar 21, 2017 12:35 am
Forum: Beginner's corner
Topic: camera -> microscope connection
Replies: 27
Views: 6359

Re: camera -> microscope connection

so only an NFK should be used here. I was unclear- I do have a 3.3 NFK which I have read that should be changed to a 2.5. From what I have read, for the projection method I have to drop an eyepiece adapter over that, connect it to a photomicro adapter L. The adapter L is constructed to fit into an ...
by carlh6902
Mon Mar 20, 2017 4:11 am
Forum: Beginner's corner
Topic: camera -> microscope connection
Replies: 27
Views: 6359

Re: camera -> microscope connection

Crusty- The eyepiece will not fit fully into the trinocular port, so only an NFK should be used here. If you use an eyepiece here, the tube length will be wrong, and the objectives will not perform at the optimal capability. Problem with the NFK it that it won't work properly for afocal shots. Only ...
by carlh6902
Mon Mar 20, 2017 12:20 am
Forum: Beginner's corner
Topic: camera -> microscope connection
Replies: 27
Views: 6359

Re: camera -> microscope connection

Just a few things to keep in mind with a BH-2. 1) If you're using Olympus objectives, and not their eyepiece or NFK projection lens, you'll get uncorrected (or improperly corrected) images, with significant lateral chromatic aberration. This will limit your results you can achieve, once you work thr...
by carlh6902
Sat Feb 18, 2017 5:25 am
Forum: Microscopes and optics
Topic: Olympus BH-2 Question. Lamp intensity adjuster. Faulty?
Replies: 17
Views: 6025

Re: Olympus BH-2 Question. Lamp intensity adjuster. Faulty?

Here is a recent update to this document.

Edit 4/14/2019: Replaced outdated link with a link to the master index, which always contains the most recent versions:

https://drive.google.com/open?id=0B7ckZ ... nFYVDJSRW8


Carl
by carlh6902
Sat Feb 18, 2017 5:23 am
Forum: Microscopes and optics
Topic: Olympus BH-2 Question. Lamp intensity adjuster. Faulty?
Replies: 17
Views: 6025

Re: Olympus BH-2 Question. Lamp intensity adjuster. Faulty?

To keep this thread current, here is a link to a recent significant update to this document.

Edit 4/14/2019: Replaced outdated link with a link to the master index, which always contains the most recent versions:

https://drive.google.com/open?id=0B7ckZ ... nFYVDJSRW8


Carl
by carlh6902
Fri Feb 10, 2017 5:28 am
Forum: Introduce yourself
Topic: .
Replies: 61
Views: 11755

Re: .

Anybody know what's going on?

Carl
by carlh6902
Fri Feb 03, 2017 2:35 am
Forum: Microscopes and optics
Topic: Repairing the Olympus BH-2 20W lamp house.
Replies: 0
Views: 1149

Repairing the Olympus BH-2 20W lamp house.

Here is a link to a PDF describing the repair of the Olympus 20W lamp house in the Olympus BH-2 (BHT/BHTU) stands. I hope somebody finds this helpful. Edit 4/14/2019: Replaced outdated link with a link to the master index, which always contains the most recent versions: https://drive.google.com/open...
by carlh6902
Tue Jan 31, 2017 11:42 pm
Forum: Microscopes and optics
Topic: Corrosion on used Olympus objectives (and SPLANs vs DPLANs)
Replies: 14
Views: 3162

Re: Corrosion on used objectives

I see a ton of the E A ( educational) objectives that are severely corroded. The A, D, and S series seem to fare better.

Carl
by carlh6902
Fri Jan 27, 2017 11:33 pm
Forum: Beginner's corner
Topic: OMAX Microscope
Replies: 28
Views: 6249

Re: OMAX Microscope

Microscope cost Have you the price of Olympus light compound Microscopes? I own six Olympus scopes, and I didn't pay anywhere near $799 for any of them. Deals can be had, if you're willing to wait, and to piece together a full scope. It also helps if you are able to repair any problems that arise. ...