Search found 120 matches

by wmodavis
Mon Apr 04, 2016 5:36 pm
Forum: Microscopes and optics
Topic: Question on Olympus BH-2
Replies: 29
Views: 10226

Re: Question on Olympus BH-2

lorez wrote:
The BHS also has built-in filters. lorez
I have not seen reference to the built-in filters on the BHS. Guess I need to up my reading skill.

Are those built-in filters in the base or elsewhere?
by wmodavis
Mon Apr 04, 2016 2:37 pm
Forum: Beginner's corner
Topic: AO20 First impression!
Replies: 26
Views: 4722

Re: AO20 First impression!

McConkey - I have been posing my questions but they are likely limited by where I am on the learning curve. A particularly interesting aspect of your story was that you seemed, to my untrained eye, to have started way down on that curve as well so I could sort of step right into it and did learn a l...
by wmodavis
Mon Apr 04, 2016 2:31 pm
Forum: Beginner's corner
Topic: Help with some nomenclature etc.
Replies: 6
Views: 1538

Re: Help with some nomenclature etc.

All of that input is helpful in sorting out the myriad of descriptions out there. Particularly 75RR's comment on the 'student'. My main goal in asking was to try to understand if there are REAL and significant differentiation by those names. And I now realize that I left out the the metallurgical va...
by wmodavis
Sat Apr 02, 2016 10:14 pm
Forum: Microscopes and optics
Topic: Question on Olympus BH-2
Replies: 29
Views: 10226

Re: Question on Olympus BH-2

77RR - That is what I'm wondering about. I'm guessing (since I have never really read that) that it mainly has to do with the illumination system rather than above the base. I do not know if the 'standard base' models have the field iris as does the 'wide base ' models. I am leaning toward the wide ...
by wmodavis
Sat Apr 02, 2016 9:31 pm
Forum: Beginner's corner
Topic: Help with some nomenclature etc.
Replies: 6
Views: 1538

Help with some nomenclature etc.

I seem to regularly come across terminology in the literature that maybe someone here can add some light, clarification, opinion etc to my growing understanding by helping me to differentiate them as to what they really mean. 1. research microscope 2. clinical microscope 3. student microscope 4. bio...
by wmodavis
Sat Apr 02, 2016 6:10 pm
Forum: Microscopes and optics
Topic: Question on Olympus BH-2
Replies: 29
Views: 10226

Re: Question on Olympus BH-2

Charles - Thanks. Going through that link now. I see from that link at least a partial answer to my ques ... •BHS – wide base , interchangeable nosepiece, 12V 100W lamp •BHT – standard base , interchangeable nosepiece, 6V 20W lamp •BHTU – standard base , fixed nosepiece, 6V 20W lamp At least - one b...
by wmodavis
Sat Apr 02, 2016 5:31 pm
Forum: Beginner's corner
Topic: AO20 First impression!
Replies: 26
Views: 4722

Re: AO20 First impression!

It has been fascinating to read through the saga of advice leading up to this purchase and then your pictures and report of the results. I have learned a lot. This may be more fun than actually having a microscope of my own. But then haven't experienced that so may be proven wrong. Hope so. I'm stil...
by wmodavis
Sat Apr 02, 2016 3:48 pm
Forum: Microscopes and optics
Topic: Question on Olympus BH-2
Replies: 29
Views: 10226

Question on Olympus BH-2

I have been continuing my search for a scope and have a question about some BH-2s that I've seen and maybe I can get help 'off the top' of your knowledgeable heads. I really like the modularity/expandability of the BH-2. I have however noticed a difference in the base which likely is minor but also ...
by wmodavis
Tue Mar 29, 2016 1:22 am
Forum: Microscopes and optics
Topic: Olympus CH2 questions
Replies: 10
Views: 2376

Re: Olympus CH2 questions

Does sound like sober advice. Not sure I could handle the $ of a BH2. At least I'm lookin'.
by wmodavis
Tue Mar 29, 2016 1:06 am
Forum: Microscopes and optics
Topic: Olympus CH2 questions
Replies: 10
Views: 2376

Re: Olympus CH2 questions

Well I may be the one who is scotch but any sober individuals out there who would venture a guess as to the possibilities of starting with this... http://www.ebay.com/itm/Olympus-BH-2-BHS-Microscope-Chassis-Trinocular-Head-2-Bausch-Lomb-15x-eyepcc/361519399117?_trksid=p2047675.c100005.m1851&_trkparm...
by wmodavis
Mon Mar 28, 2016 6:56 pm
Forum: Microscopes and optics
Topic: Olympus CH2 questions
Replies: 10
Views: 2376

Re: Olympus CH2 questions

Thanks 77RR. That is definitely a good start. Since reading many of the discussions here I've been convinced to look at older used scopes for many of the excellent reasons cited. A little uncomfortable with that though just because of my lack of familiarity and knowledge in this arena. Decided to ba...
by wmodavis
Mon Mar 28, 2016 4:05 pm
Forum: Microscopes and optics
Topic: Olympus CH2 questions
Replies: 10
Views: 2376

Olympus CH2 questions

Does anyone here have experience with an Olympus CH2? Looking around and have a few questions on this one as a starter. 1. General impressions of the CH2 as a beginning scope. 2. Most I've seen are binocular. Can they be upgraded/converted to a trinocular? 3. Is this fairly modular and upgradeable w...
by wmodavis
Sat Mar 26, 2016 11:12 pm
Forum: Home-made microscope adaptations
Topic: Quick cheap & easy LED conversion for my Halogen 'scope
Replies: 72
Views: 30085

Re: Quick cheap & easy LED conversion for my Halogen 'scope

Re UV filters - here is a test of various ones. I'd pick the Tiffan Haze-1

http://photo.net/equipment/filters/
by wmodavis
Sat Mar 26, 2016 9:14 pm
Forum: Home-made microscope adaptations
Topic: Quick cheap & easy LED conversion for my Halogen 'scope
Replies: 72
Views: 30085

Re: Quick cheap & easy LED conversion for my Halogen 'scope

And MRSONCHUS - There's more. Here's a good Q&A presentation about LED stuff. http://www.lrc.rpi.edu/programs/nlpip/lightinganswers/led/indicationIllumination.asp Here is a small hobbiest device that can be used for measuring UVA & UVB intensity. Those are the damaging and tanning UV bands. Looks li...
by wmodavis
Sat Mar 26, 2016 6:28 pm
Forum: Beginner's corner
Topic: Re DIY polarizing filters
Replies: 8
Views: 2894

Re: Re DIY polarizing filters

Was prompted to snoop in the catacombs in the basement caverns below and in an old camera case from bygone years I found two camera lense polerizers. Walla! Now all I need is a microscope and some years of practice.
by wmodavis
Sat Mar 26, 2016 5:43 pm
Forum: Home-made microscope adaptations
Topic: Quick cheap & easy LED conversion for my Halogen 'scope
Replies: 72
Views: 30085

Re: Quick cheap & easy LED conversion for my Halogen 'scope

Another good discussion fitting into my posts with questions elsewhere. My 2cents as an electronics design engineer in a previous life (actually most of my now retired career) wherein I design multiple pieces of equipment using LEDs though more for indicators rather than for lighting as this thread ...
by wmodavis
Sat Mar 26, 2016 4:59 pm
Forum: Pictures and Videos
Topic: Paramecium and Polarized Effect
Replies: 6
Views: 713

Re: Paramecium and Polarized Effect

JimT - thanks for that. Good contrasting views. Thanks also for thinking of me.
by wmodavis
Sat Mar 26, 2016 4:46 pm
Forum: Beginner's corner
Topic: Don't know if this fits cuz I'm NOT afraid to ask....
Replies: 26
Views: 4691

Re: Don't know if this fits cuz I'm NOT afraid to ask....

Darn! I wrote a tome and it disappeared. Maybe I'll redo.

But I'll try a diagram if I can make it work.

http://www.rohm.com/web/global/led-ligh ... cture/led2

Particularly I'm referring to Topic 10: What is the light emission spectrum?
Hope the link comes through.
by wmodavis
Sat Mar 26, 2016 3:12 am
Forum: Beginner's corner
Topic: Don't know if this fits cuz I'm NOT afraid to ask....
Replies: 26
Views: 4691

Re: Don't know if this fits cuz I'm NOT afraid to ask....

LEDs are very monochromatic light so there is not much of the light spectrum present. Although the white LEDs must be broader spectrum content.
by wmodavis
Fri Mar 25, 2016 5:06 pm
Forum: Beginner's corner
Topic: Don't know if this fits cuz I'm NOT afraid to ask....
Replies: 26
Views: 4691

Re: Don't know if this fits cuz I'm NOT afraid to ask....

Thanks 75RR. I've seen that before but will give it a thorough study now that you provided a link. Better bookmark it for future referral too.
by wmodavis
Fri Mar 25, 2016 12:27 am
Forum: Beginner's corner
Topic: Don't know if this fits cuz I'm NOT afraid to ask....
Replies: 26
Views: 4691

Re: Don't know if this fits cuz I'm NOT afraid to ask....

Have gone back and read some on LED lighting including ads from vendors. A couple things stuck out to me. Most talk is about cooler temperature, long life, low power etc. Nothing about its characteristics that might aid or distract from quality of viewing in microscopy. So it begs of sales puffery. ...
by wmodavis
Fri Mar 25, 2016 12:06 am
Forum: Introduce yourself
Topic: Greetings from potentially new microscopist
Replies: 13
Views: 3697

Re: Greetings from potentially new microscopist

Dale I also like those two sites Have learned lots there as well as here. Yup Collins was likely every ones dream though I just had Heathkit and Halicrafter. So I may dream of the Nikons & Olympus might end up with a plastic scope from the science store up the street. Hopefully some middle ground. T...
by wmodavis
Thu Mar 24, 2016 5:44 pm
Forum: Beginner's corner
Topic: Don't know if this fits cuz I'm NOT afraid to ask....
Replies: 26
Views: 4691

Re: Don't know if this fits cuz I'm NOT afraid to ask....

It is satisfying and more than that helpful to get in depth responses to my posts here from some of you guys I've red a lot of. I always learn new things to go search out and learn even more about. Good stuff on the LED issue or non issue as the case may be. One of my reasons to question is because ...
by wmodavis
Thu Mar 24, 2016 5:20 pm
Forum: Beginner's corner
Topic: Re DIY polarizing filters
Replies: 8
Views: 2894

Re: Re DIY polarizing filters

Let me refer you to an easy and "Free" way to add polarization to your scope. Check out the article in the Microbehunter magazine issue 49 below: http://www.microbehunter.com/microbehunter-magazine-issue-49/ JimT Thanks Jim for that link. Just read it and it answered another question I posted about...
by wmodavis
Thu Mar 24, 2016 5:11 pm
Forum: Introduce yourself
Topic: Greetings from potentially new microscopist
Replies: 13
Views: 3697

Re: Greetings from potentially new microscopist

Thanks Dale. You do paint a clear picture. For the moment I am reading reams way out of my area of expertise and learning a lot. I think you're right on with the 'friendly and superbly knowledgeable' description. I've always liked the technical side of things but there is more to focus on in my prim...
by wmodavis
Thu Mar 24, 2016 2:48 pm
Forum: Beginner's corner
Topic: Re DIY polarizing filters
Replies: 8
Views: 2894

Re DIY polarizing filters

In another thread it was suggested to use a camera screw on polarizing filter such as the HOYA that was shown. My question (s): I believe those type filters contain two polarized filters in a rotatable frame and thus to use on a microscope must be separated. Is that true? If so has anyone had experi...
by wmodavis
Thu Mar 24, 2016 2:30 pm
Forum: Beginner's corner
Topic: Don't know if this fits cuz I'm NOT afraid to ask....
Replies: 26
Views: 4691

Don't know if this fits cuz I'm NOT afraid to ask....

Likely this is a simple one to answer so here goes from a relative newcomer to this sport... As I'm interested in getting a microscope and am fascinated by some of the contrast enhancement techniques. Here's my question about using a LED light source with a polarizing filter. Are they compatible? An...
by wmodavis
Thu Mar 24, 2016 12:07 am
Forum: Introduce yourself
Topic: Greetings from potentially new microscopist
Replies: 13
Views: 3697

Re: Greetings from potentially new microscopist

Wow! Thanks guys for chiming in. Lots of helpful suggestions some of which I'd not looked into so I'll keep hitting the books as I seem to have some time and don't really want to rush into a bad decision. The emulsion thing just pricked my interest so not really sure how relevant it is in the long t...
by wmodavis
Sat Mar 19, 2016 6:19 pm
Forum: Introduce yourself
Topic: Greetings from potentially new microscopist
Replies: 13
Views: 3697

Re: Greetings from potentially new microscopist

Charles Thanks for the reply. I am on a steep learning curve on this and am aware, at least superficially, of those items you mentioned. Since this is mostly a curiosity thing at this point there really no specific emulsions to name. It seems that the most likely branch of microscopy I can become in...
by wmodavis
Sat Mar 19, 2016 5:00 pm
Forum: Introduce yourself
Topic: Greetings from potentially new microscopist
Replies: 13
Views: 3697

Greetings from potentially new microscopist

At present I do not have a microscope but have a cause that is compelling me to join the ranks. I have no experience with microscopes. I am a retired electronics design engineer going on 73 with a big curiosity. What is compelling me in this direction? I have an interest in viewing, analyzing and pe...