Search found 1580 matches

by MichaelG.
Mon Jan 20, 2020 8:39 pm
Forum: Introduce yourself
Topic: Hello from Australia
Replies: 5
Views: 95

Re: Hello from Australia

Welcome, Ross

Australia has sure been seeing Mother Nature in action recent times.

... Best Wishes for the future !!

MichaelG.
by MichaelG.
Sun Jan 19, 2020 7:13 am
Forum: Microscopes and optics
Topic: Help me identify Reichert's objetive and microscope
Replies: 11
Views: 203

Re: Help me identify Reichert's objetive and microscope

Apologies or my naivety :oops:

You are obviously better-informed, John.

MichaelG.
by MichaelG.
Sat Jan 18, 2020 1:02 pm
Forum: Microscopes and optics
Topic: Help me identify Reichert's objetive and microscope
Replies: 11
Views: 203

Re: Help me identify Reichert's objetive and microscope

Sorry: Not sure about the S
... But Pl almost definitely means Plan

MichaelG.
.

P.S. ... I have the basic binocular version of that ‘scope, and always enjoy using it.
The fine-focus arrangement is unusual, but it works very well.
by MichaelG.
Sat Jan 18, 2020 8:00 am
Forum: Microscopes and optics
Topic: Help me identify Reichert's objetive and microscope
Replies: 11
Views: 203

Re: Help me identify Reichert's objetive and microscope

I am not familiar with that particular objective, but the stand is a Neopan
http://www.science-info.net/docs/reiche ... Neopan.pdf

MichaelG.
.

Edit: Also featured here: http://www.science-info.net/docs/reiche ... dicine.pdf
by MichaelG.
Thu Jan 16, 2020 9:24 pm
Forum: Camera systems and imaging
Topic: BH2 BHS MTV
Replies: 36
Views: 483

Re: BH2 BHS MTV

Good result ... Thanks for the info.

MichaelG.
by MichaelG.
Wed Jan 15, 2020 11:15 pm
Forum: Microscopes and optics
Topic: BHS Voltage
Replies: 14
Views: 215

Re: BHS Voltage

Great news, Thomas ... Thanks for confirming.

Information useful for anyone else in a similar situation.

MichaelG.
by MichaelG.
Wed Jan 15, 2020 4:05 pm
Forum: Beginner's corner
Topic: Nikon F-adapter for Kyowa Model RFB-7
Replies: 8
Views: 105

Re: Nikon F-adapter for Kyowa Model RFB-7

... That [which is basically what I was intending to discuss] would almost certainly work.

MichaelG.
by MichaelG.
Wed Jan 15, 2020 11:32 am
Forum: Beginner's corner
Topic: Nikon F-adapter for Kyowa Model RFB-7
Replies: 8
Views: 105

Re: Nikon F-adapter for Kyowa Model RFB-7

Tailgunner wrote:
Wed Jan 15, 2020 11:03 am
[…]
The part of the housing where the adapter is connected to has a V-shape, so that the set screws hook behind it.
I couldn’t wait ...

That looks very much like one half of a T-mount

... more this evening

MichaelG.
by MichaelG.
Wed Jan 15, 2020 11:24 am
Forum: Beginner's corner
Topic: Nikon F-adapter for Kyowa Model RFB-7
Replies: 8
Views: 105

Re: Nikon F-adapter for Kyowa Model RFB-7

Thanks ...
I will have a look a the photos, and do some thinking [!], this evening.

MichaelG.
by MichaelG.
Tue Jan 14, 2020 9:56 pm
Forum: Beginner's corner
Topic: Nikon F-adapter for Kyowa Model RFB-7
Replies: 8
Views: 105

Re: Nikon F-adapter for Kyowa Model RFB-7

I recently bought a Kyowa Medilux-12 trinoculaire. It came with a camera-adapter Model RFB-7 also by Kyowa. https://www.graysonline.com/lot/0237-5020869/laboratory-and-bio-tech/photomicrography-system-with-kyowa-rfb-7-photomicrography-attachment-mino I just have the camera adapter (I don't have the...
by MichaelG.
Tue Jan 14, 2020 8:26 pm
Forum: Beginner's corner
Topic: Advice on next upgrade to a T390, looking to observe yeast and bacteria.
Replies: 10
Views: 217

Re: Advice on next upgrade to a T390, looking to observe yeast and bacteria.

Do you have a link to a well imaged bacteria slide (done with affordable amateur equipment) I can use for comparison to what I am able to see on my setup? This video by our host will probably disappoint you ... but it’s a ‘reality check’ https://youtu.be/aZzRygip5XY You need a Scanning Electron Mic...
by MichaelG.
Tue Jan 14, 2020 10:32 am
Forum: Pictures and Videos
Topic: My first try
Replies: 4
Views: 161

Re: My first try

For a ‘first try’ ... Those are amazingly good images

Nice work !!

MichaelG.
by MichaelG.
Tue Jan 14, 2020 10:06 am
Forum: Home-made microscope adaptations
Topic: Open source DIY microtome plans
Replies: 5
Views: 135

Re: Open source DIY microtome plans

Thanks for sharing that ... But frankly, I think it looks like a lot of wasted effort. To my mind, a fundamental defining feature of a Microtome is that it provides controlled movement along a defined axis. ... This device fails to provide that. It may serve as a baseline for students to design some...
by MichaelG.
Mon Jan 13, 2020 9:52 pm
Forum: Camera systems and imaging
Topic: BH2 BHS MTV
Replies: 36
Views: 483

Re: BH2 BHS MTV

... I will order one of these (https://www.dealcorner.com/Olympus-Accessories/CustomBH2adapt1.jpg) and let you know how it works. It is only $70. Original OM adapters are very hard to find and very pricey. Thank you ... I would be very interested. Also, could I ask you to please tell us the length ...
by MichaelG.
Mon Jan 13, 2020 5:17 pm
Forum: Microscopes and optics
Topic: BH-2 Focus adjustment question
Replies: 16
Views: 191

Re: BH-2 Focus adjustment question

Great work, Carl

MichaelG.
by MichaelG.
Mon Jan 13, 2020 4:22 pm
Forum: Camera systems and imaging
Topic: BH2 BHS MTV
Replies: 36
Views: 483

Re: BH2 BHS MTV

Absolutely fine if it works for you :!:

My understanding and [admittedly limited] experience suggests that Olympus very carefully optimised the projection distance, and that any departure from that ‘Goldilocks Zone’ can only have a negative impact on performance.

MichaelG.
by MichaelG.
Mon Jan 13, 2020 4:11 pm
Forum: Microscopes and optics
Topic: BH-2 Focus adjustment question
Replies: 16
Views: 191

Re: BH-2 Focus adjustment question

... Hard to describe, but if you turn the fine focus a certain amount in one direction, then back again by the same travel, you would expect to arrive back where you started, but this is not happening. ... The technical term is ‘Hysteresis’ ... but that doesn’t tell you how to fix it ! My guess is ...
by MichaelG.
Mon Jan 13, 2020 10:32 am
Forum: Microscopes and optics
Topic: BH-2 Focus adjustment question
Replies: 16
Views: 191

Re: BH-2 Focus adjustment question

I have a BH-2 and would like to adjust the tension on the focus knob. According to the manual, this is achieved by inserting a screwdriver into one of the holes on the adjustment ring. On the unit I have here, the screwdriver can only be inserted a few mm and there is insufficient leverage to move ...
by MichaelG.
Mon Jan 13, 2020 12:11 am
Forum: Camera systems and imaging
Topic: BH2 BHS MTV
Replies: 36
Views: 483

Re: BH2 BHS MTV

Update: Having failed here: https://fotodioxpro.com/products/om35-nikf-pro Strangely ... I found the text I was looking-for on Walmart’s page This Fotodiox lens mount adapter is made with high standard precision. It's all metal design and polished surface is designed to guarantee smooth mounting and...
by MichaelG.
Sun Jan 12, 2020 11:36 pm
Forum: Beginner's corner
Topic: Camera port & (non-microscope) camera setup
Replies: 1
Views: 76

Re: Camera port & (non-microscope) camera setup

If your C-mount camera has an appropriate lens, just focus it on infinity and mount it over the eyepiece
[ this is called afocal imaging ]

Results will depend upon the quality of everything in the system; but can be excellent.

MichaelG.
by MichaelG.
Sun Jan 12, 2020 9:46 am
Forum: Beginner's corner
Topic: thinking out loud here - moral thoughts
Replies: 21
Views: 1235

Re: thinking out loud here - moral thoughts

I think the only right thing to say is: "yes, I kill organisms for fun, because me having fun is more important to me than the live of the creatures I kill". Very succinct, Jan For those who do microscopy for more than amusement, I am sure that ‘the end justifies the means’ ... but the rest of us w...
by MichaelG.
Sun Jan 12, 2020 8:33 am
Forum: Camera systems and imaging
Topic: BH2 BHS MTV
Replies: 36
Views: 483

Re: BH2 BHS MTV

mrsonchus wrote:
Sun Jan 12, 2020 3:44 am
This looks like the Nikon F equivalent to the Canon?
Very interesting ... I confess that I am bewildered

I can see no mention of optics in the description, but I think these adapters include a weak negative lens element [which would make them not ‘simple’ per my original note]

MichaelG.
by MichaelG.
Sat Jan 11, 2020 9:44 am
Forum: Camera systems and imaging
Topic: BH2 BHS MTV
Replies: 36
Views: 483

Re: BH2 BHS MTV

According to that article, no Nikon adapter is available for the photomicro L, so you can either remove the Olympus mount and replace it with a Nikon mount, or use a tube from another manufacturer - he shows some examples. Just for further clarity : The ‘flange to sensor’ distance on a Nikon body i...
by MichaelG.
Fri Jan 10, 2020 10:13 am
Forum: Microscopes and optics
Topic: BHS Voltage
Replies: 14
Views: 215

Re: BHS Voltage

thomas.schwarz wrote:
Fri Jan 10, 2020 7:57 am
Great, thanks friends!!!

No problem to pick up a Spannungswandler
... You’re welcome

I’ve just learned a wonderful new word ^^^

MichaelG.
by MichaelG.
Fri Jan 10, 2020 6:24 am
Forum: Microscopes and optics
Topic: BHS Voltage
Replies: 14
Views: 215

Re: BHS Voltage

carlh6902 wrote:
Fri Jan 10, 2020 1:01 am
None of the BH-2 scopes can be converted between 110 and 220. They are built to be one or the other.
I take your word for that, Carl ... I am not familiar with the range.

:oops: My apologies for misinterpreting the switch :oops:

My ‘choice 2’ above should present no problem.

MichaelG.
by MichaelG.
Fri Jan 10, 2020 12:37 am
Forum: Microscopes and optics
Topic: BHS Voltage
Replies: 14
Views: 215

Re: BHS Voltage

That scope was made for north america and cannot be converted for 220v. This pdf shows whats in there: https://drive.google.com/open?id=16d-orb_jgu8e_EC0O3Iq1ZqfZomsScdv Carl . Thanks for sharing that, Carl It’s disappointing that the transformer is not the one shown in the circuit on page A-12 [ w...
by MichaelG.
Fri Jan 10, 2020 12:32 am
Forum: Microscopes and optics
Topic: BHS Voltage
Replies: 14
Views: 215

Re: BHS Voltage

That’s a pity ... Some transformers have dual 110V windings which can be used in series or in parallel, and I was hoping that might be the case here [because they seem to be using a European ‘kettle connector’ on the mains lead]. Two obvious choices: 1. Substitute a similarly sized 220V transformer ...
by MichaelG.
Thu Jan 09, 2020 8:15 pm
Forum: Microscopes and optics
Topic: BHS Voltage
Replies: 14
Views: 215

Re: BHS Voltage

110/115 would normally be an acceptable range of input voltages, rather than a switchable option. If you are comfortable doing this : Open the box and look inside ... you may get a pleasant surprise. Sometimes the internal transformers are wire-able to suit either input voltage ... You may even find...