MicrobeHunter.com Microscopy Forum

woyjwjl wrote: ↑

Thu Jul 21, 2022 2:44 am

But, as a hobbyist, I wouldn't give up my OLYMPUS BHS for a DIC ....

Well: best of both worlds: a BH2 with DIC

Pete, All Olympus BH phase condensers showing up in my search on eB are actually the BH2 model.

Yes, I can put LB objectives on the BHB, I've put a 20X cheap DIN and all works, for the phase contrast basically I have to buy a phase condenser for BH-2 (it will fit in the BHB) and the objectives for that condenser, right? You EITHER buy a BH phase condenser (BH-PC) with SB Short Barrel phase ob...

I haven't any phase objectives yet, so I'll buy the objectives good for the condenser that I'll get! Confirmed: the BH2 trino head will match the BHB. You can mount the BH2-PC Phase condenser at the BHB via the top ring (I have one mounted to a CH2 with condenser mount similar to the BHB). The BH2 ...

Wow, “car”-tuning at its best

viktor j nilsson wrote: ↑

Wed Jun 22, 2022 6:08 pm

PeteM wrote: ↑

Wed Jun 22, 2022 5:30 am

Sad that MicrobeHunter has become a honey pot for spammers. And who imagines that's a good way to spend their life / earn a living?

Yeah, it's really starting to reduce my interest in the forum, unfortunately.

Same here.

apochronaut wrote: ↑

Thu Jun 09, 2022 7:15 am

The licensee msking PYREX kitchenware for the European market still uses borisilicate glass.

Thanks, we have a few over here, made in France, PYREX in large letters and clear glass when you look through.

On IPA and cancer:

https://publications.iarc.fr/_publicati ... 6311c7.pdf

Zeiss lens cleaner removed the coating from my Olympus bino prisms.

Did you consider moving to an Olympus BH2 stand, reusing your Nikon 160 mm objectives and eyepieces?

My expectation is the Kyowa microscope will have objectives with tube length 36.65 mm (based in the fact the older Kyowa models have a lot of similarity to the Olympus e-series). Measure the length of your 40* objective until the shoulder (so excluding the thread that fits the hole) most common vale...

Look at this on eBay
OLYMPUS BH2 MICROSCOPE DIC / NOMARSKI & PHASE CONTRAST CONDENSER SET

Item number: 284714516220

Please be informed the BH2 stages often suffer from cracked racks. Replacement racks are sometimes available on xB approx 100 set excl postage.

I asked the same question, Carl H informed me the stages are not compatible.

Very fond of my Olympus SPlanApo 20* na 0.7 dry (actually have 2 in use on 2 different scopes), main area of use is watching algae and protists. The 40* SPlanApo and the D Achromat 20* Negative High phase contrast are my second best. The “simple” D Achromats have a Depth of Field/Focus advantage tho...

If your CX31 has the UIS2 set of Optics (= default set) they are excellent quality.

Improving them will require multiple times the amount your paying for the scope.

Your CH2 objectives function best with a MATCHING Olympus CHK eyepiece (or NFK projection eyepiece (the abbreviation correction in objective and eyepiece “work together” to give a you a proper color and abbreviation corrected image. I did use a Leitz 10*18 mounted as projective on a Nikon 4500 camer...

THE source on manuals and maintenance guides for Olympus BH and BH2 ERA: Alan Wood

http://www.alanwood.net/

Thanks for sharing your experience. The OP question was on optimizing image quality. Both the Nikon and Olympus websites are explicit om the requirement on matching Telan lens position Nikon 200 mm Olympus 180 mm for optimal image quality plus stating several additional lens design incompatibilities...

The Telan lens in each brand tube lens system is part of abbreviation correction. Each brand has it's own correction system, so when aiming for picture quality there is hardly any / limited compatibility between infinity systems. Olympus tube lenses are non-compensating, and most Chinese systems ar...

Q1: Page 20 of the CH2 manual specifies the working distance per objective: http://www.alanwood.net/downloads/olympus-chs-cht-instructions.pdf The Olympus “ED” objective 10* and 40* have a slightly reduced working distance compared to the series marked “A” Please be informed a lot of (cheap chinese)...

A site with loads of introduction and advance material : http://www.microscopy-uk.org.uk/

Hmm that seems like a p. competent microscope. The .95 splan apo is capable of finer detail; however, it is a bit tricky to use and in some circumstances will not work as well as the .65 na. I would make sure you are really at the limit of your current equipment first, and that it is functioning as...

Your LW scope should be compatible with modern Olympus infinity objectives, so you have an upgrade path available in that direction. The Telan lens in each brand tube lens system is part of abbreviation correction. Each brand has it's own correction system, so when aiming for picture quality there ...

I used to have 2 of those Dialux scopes: very nice craftmanship. The mirror issue is a common one. I'll give a try to finding a small (square?) mirror that fit the need and 3D print a new mount. A Square mirror will not do: you require an oval one: otherwise the part of your low power objectives (4*...

Wow Tom, nice video

Clear i need to practice, practice, practice to approach this quality level.

It should still be possible to achieve parfocality with the eyepiece raised…… Note that raising the eyepiece is going to have a detrimental effect on image quality, a fairly noticeable one with the nfks. Fair refrased: In short: parfocality COMBINED WITH OPTIMAL IMAGE requires the NFK eyepiece at t...

As a Nikon user for over 45 years Owning “the full artillery” I’m using a Canon APS camera 750 D on my microscope: with electronic first shutter curtain (EFSC) to reduce vibration and (relatively old) Canon Control software to link the camera to the PC via USB (remote control plus preview for focuss...

Depth of field is a serious issue: requiring an optimal set-up: starting with coverglasses 1.5 of exact 0.170 mm thickness (the expensive Zeiss CG come to mind here), pond samples require a VERY thin fluid layer (so no debris in your sample). Alternatively I often use 1.0 coverglasses to compensate ...

This (non recent) website contains a lot of photo micrography info including an article on achieving parfocality . https://krebsmicro.com/ Alternative source is Alan Woods Olympus website and his article on photography using a BH2 http://www.alanwood.net/downloads/olympus-bh2-microscope-attach-digit...