Search found 113 matches

by deBult
Sun Aug 30, 2020 8:53 am
Forum: Beginner's corner
Topic: Microscope hunting
Replies: 14
Views: 915

Re: Microscope hunting

I have never been able to score a 100% intact scope on eBay: all needed some work: some substantial (the price was no good indicator on the rework required). The last BH2 bought required a full CLA, new focus knobs, 2 new stage racks (cracked), a new condenser rack (broken). Individual objectives “o...
by deBult
Mon Aug 24, 2020 7:26 pm
Forum: Microscopy accessories
Topic: condenser insert set
Replies: 12
Views: 569

Re: condenser insert set

iconoclastica wrote:
Sun Aug 23, 2020 12:24 pm
deBult wrote:
Sun Aug 23, 2020 11:29 am
These are INSERTS into the condenser and close to the diaphragm. I’m pretty please with my set.
What type of condenser are you using? On my 0.90 achromat the diaphragm resides c. 30mm above the bottom plate.
Olympus BH2 with standard Abbe condenser or Phase condenser.
by deBult
Sun Aug 23, 2020 11:29 am
Forum: Microscopy accessories
Topic: condenser insert set
Replies: 12
Views: 569

Re: condenser insert set

These are INSERTS into the condenser and close to the diaphragm. I’m pretty please with my set.
by deBult
Sat Aug 22, 2020 5:30 pm
Forum: Illumination Techniques
Topic: Phase Contrast or Brightfield if all things are equal?
Replies: 27
Views: 883

Re: Phase Contrast or Brightfield if all things are equal?

Read Apochromat previous post please.

Go for the swap even to a none phase 100* objective.
This one is only (but very) usefull in obsevering (blood) smears without coverglas: a very specialist and niche field of microscopy.
by deBult
Thu Aug 20, 2020 10:13 am
Forum: Illumination Techniques
Topic: Phase Contrast or Brightfield if all things are equal?
Replies: 27
Views: 883

Re: Phase Contrast or Brightfield if all things are equal?

The external transformer listed worries me: to my understanding the BHS does not need one for brightfield and phase (I’m a BHTU user). This may indicate a failure in the base normally supplying the power.

http://www.alanwood.net/downloads/olymp ... manual.pdf
by deBult
Wed Aug 19, 2020 7:32 pm
Forum: Illumination Techniques
Topic: Phase Contrast or Brightfield if all things are equal?
Replies: 27
Views: 883

Re: Phase Contrast or Brightfield if all things are equal?

There is a slight reduction in contrast and resolution when using Olympus phase objectives for bright field, you wil only notice the difference when comparing both on the same scope. The observation “ upgrading a brightfield microscope to phase is much more expensive than buying a set of brightfield...
by deBult
Mon Aug 10, 2020 1:02 pm
Forum: Specimens, samples and slides
Topic: Diatom Shop experiences
Replies: 1
Views: 637

Re: Diatom Shop experiences

Interested in strew slide quality as well (the test slide is excellent)
by deBult
Sun Aug 09, 2020 6:51 am
Forum: Beginner's corner
Topic: Where to buy chemicals? *Philippines
Replies: 2
Views: 580

Re: Where to buy chemicals? *Philippines

May I suggest to look into this book: using household chemicals replacing the traditional stuff

SAFE MICROSCOPIC TECHNIQUES FOR AMATEURS
by Mr Walter Dioni (Author)
by deBult
Thu Aug 06, 2020 10:37 am
Forum: Camera systems and imaging
Topic: Microscope and monitor sharpen?
Replies: 30
Views: 1688

Re: Microscope and monitor sharpen?

Not a Nikon scope user, but your eyepieces may not be original Nikon.

Example: https://www.mikroskopie-forum.de/index. ... ic=38172.0
by deBult
Sat Jul 25, 2020 8:13 pm
Forum: Microscopes and optics
Topic: Trinocular Projection Lenses for DSLRs
Replies: 130
Views: 6837

Re: Trinocular Projection Lenses for DSLRs

I presume the budget Chinese infinity corrected microscopes must have some sort of tube lens but it's not clear where it's positioned. They hide all the messy details! It seems like an expensive accessory is required (though costs less than a Thorsons tube lens), and which includes some optics, in ...
by deBult
Sat Jul 25, 2020 7:06 pm
Forum: Beginner's corner
Topic: floaters
Replies: 13
Views: 1182

Re: floaters

75RR wrote:
Thu Jul 23, 2020 6:57 pm

Changing the angle one looks through the eyepieces by adjusting chair height and posture helps.
My own IMPRESSION is the floaters are less annoying when using dark field observation In your scope: it is worth trying YMMV though.
by deBult
Sat Jul 25, 2020 7:00 pm
Forum: Microscopes and optics
Topic: Bino issue with Olympus CH-2
Replies: 11
Views: 822

Re: Bino issue with Olympus CH-2

Krishan wrote:
Fri Jul 24, 2020 4:56 pm
. Otherwise I would be happy selling it to you as a replacement part at an affordable price.
Hope the new head works out ok.

Have been able to locate a spare Bottom relay lens with help of Carl.
Best, deBult
by deBult
Sat Jul 25, 2020 6:43 pm
Forum: Microscopes and optics
Topic: Trinocular Projection Lenses for DSLRs
Replies: 130
Views: 6837

Re: Trinocular Projection Lenses for DSLRs

Louise... I think you have your facts mixed up: please reread the input of apochromat and others in earlier replies to your posts: for most finite scopes the image quality is the result of the COMBINATION of objective and eyepiece In addition to your last observation on Apo’s outperforming Achro’s: ...
by deBult
Sat Jul 25, 2020 8:26 am
Forum: For forum members who want to buy and sell equipment
Topic: Sold Leitz Dialux Black enamel type 3
Replies: 0
Views: 458

Sold Leitz Dialux Black enamel type 3

Sold Leitz Dialux Black enamel type 3. The little (well way more substantial than a SM stand) "sister" of the legendary Ortholux. Good working and exterior condition (born in 1958 though). Binocular tube 6.3*, 10* and 12.5* Periplan wide field eyepieces Berek condenser (with 2 diaphragms to enable K...
by deBult
Sat Jul 25, 2020 6:57 am
Forum: For forum members who want to buy and sell equipment
Topic: Sold Leitz 402 Phase condenser with phase objectives
Replies: 0
Views: 456

Sold Leitz 402 Phase condenser with phase objectives

Sold Leitz 402 Phase condenser with phase objectives: for the early Ortholux and Dialux series 10* and 40* phase objectives : 170 mm tube Length 402 Phase condenser on slider (width 46.5 mm) Including the ultra rare centering key's (Paind 100 Euro's for them myself) All in used but good working cond...
by deBult
Sat Jul 25, 2020 1:19 am
Forum: Microscopes and optics
Topic: Trinocular Projection Lenses for DSLRs
Replies: 130
Views: 6837

Re: Trinocular Projection Lenses for DSLRs

Louise, To my understanding nearly all brands of older finite tube length scopes require a matched set of eyepieces and objectives to achieve correct color correction (The older Nikon ones are the only exception to this rule known to me). This requirement is not limited to Apo objectives but is appl...
by deBult
Sat Jul 25, 2020 12:54 am
Forum: For forum members who want to buy and sell equipment
Topic: Wanted: Leitz 0.80 dry darkfield condenser with sliding dovetail for '70s Dialux
Replies: 3
Views: 673

Re: Wanted: Leitz 0.80 dry darkfield condenser with sliding dovetail for '70s Dialux

019E2EA0-53D9-478D-B789-4638C66F88CD.jpeg
019E2EA0-53D9-478D-B789-4638C66F88CD.jpeg (68.94 KiB) Viewed 632 times
I may have one, it is from a 1958 Dialux 1, if still interested please PM.

I’m in Europe so shipping Cost may be prohibitive.

Best deBult
by deBult
Fri Jul 24, 2020 7:15 pm
Forum: Microscopes and optics
Topic: Bino issue with Olympus CH-2
Replies: 11
Views: 822

Re: Bino issue with Olympus CH-2

There is a relay glass plate at the bottom of the CH2 bino and mine is cracked.
by deBult
Fri Jul 24, 2020 5:04 pm
Forum: Microscopes and optics
Topic: Bino issue with Olympus CH-2
Replies: 11
Views: 822

Re: Bino issue with Olympus CH-2

You have a PM
by deBult
Fri Jul 24, 2020 4:40 pm
Forum: Microscopes and optics
Topic: Bino issue with Olympus CH-2
Replies: 11
Views: 822

Re: Bino issue with Olympus CH-2

Krishan,

I’m in Europe and have a mono ocular you might be interested in as an interim solution to bridge the gap till you have found a new bino/trino.

And if you find a new One I’m interersted in the bottom lens of your bino ;)

Beste, deBult
by deBult
Fri Jul 24, 2020 3:32 am
Forum: Microscopes and optics
Topic: Lomo LOMO ОИ-14 Aplanatic NA 1.4 Condenser
Replies: 10
Views: 857

Re: Lomo LOMO ОИ-14 Aplanatic NA 1.4 Condenser

If you read German: a lot of info and maintenance info: http://www.mikroskopfreunde-nordhessen.de/
by deBult
Fri Jul 24, 2020 3:12 am
Forum: Microscopes and optics
Topic: Lomo LOMO ОИ-14 Aplanatic NA 1.4 Condenser
Replies: 10
Views: 857

Re: Lomo LOMO ОИ-14 Aplanatic NA 1.4 Condenser

The condenser is a copy/development of an older Zeiss design, the option on the condenser to use oblique lightning is very useful for studying protists and alike. The color correction is slightly better: when doing Kohler the color fringes around the diaphragm are reduced. I used it a lot before i g...
by deBult
Wed Jul 22, 2020 7:58 pm
Forum: Microscopes and optics
Topic: Help with a crooked fine focus knob
Replies: 2
Views: 396

Re: Help with a crooked fine focus knob

For Olympus BH2 repair guides refer to the Alan Wood site: he host the excellent guides from Carl H.

http://www.alanwood.net/olympus/downloads.html.
by deBult
Mon Jul 20, 2020 1:30 pm
Forum: Resources (online, books etc.)
Topic: Guide to identifying amoebae
Replies: 4
Views: 808

Re: Guide to identifying amoebae

The whiskey part of the identification process appeals to me.
by deBult
Sun Jul 19, 2020 11:46 pm
Forum: Resources (online, books etc.)
Topic: Guide to identifying amoebae
Replies: 4
Views: 808

Re: Guide to identifying amoebae

Appreciated !
by deBult
Sun Jul 12, 2020 7:14 pm
Forum: Microscopes and optics
Topic: condenser Orthoplan
Replies: 4
Views: 338

Re: condenser Orthoplan

My Berek condensor has no filter tray.
by deBult
Thu Jul 09, 2020 4:45 pm
Forum: Microscopes and optics
Topic: Fixed Köhler
Replies: 51
Views: 2655

Re: Fixed Köhler

The flare issue is way less of an issue with modern coated objectives though.

I have the Kohler option set of my Olympus CH-2 with DPlan achromatic objectives and hardly ever mount or use it.
To my eyes the Kohler difference is only noticeable when taking pictures. YMMV though.
by deBult
Thu Jul 09, 2020 4:23 pm
Forum: Pictures and Videos
Topic: Nice testate amoebe, but which one?
Replies: 6
Views: 319

Re: Nice testate amoebe, but which one?

Bruce, also thank you from this beginner.

The step by step reasoning to come to a high level determination is really helpful.
by deBult
Thu Jul 09, 2020 2:39 am
Forum: Specimens, samples and slides
Topic: Where Can I Find Ciliates without Any Creeks or Ponds?
Replies: 10
Views: 596

Re: Where Can I Find Ciliates without Any Creeks or Ponds?

Try the water from a flower vase after the flowers we're in for a few day’s. Or squeeze the liquid out of a bit of water soaked moss if you can find some (with luck you find some water bears). Weird the cultures from (dried) lettuce, hay, a corn of grain, tiny piece of cheese etc. did not work out. ...