Search found 434 matches

by BramHuntingNematodes
Fri Sep 18, 2020 6:26 am
Forum: For forum members who want to buy and sell equipment
Topic: Zeiss Invertoskop
Replies: 3
Views: 99

Re: Zeiss Invertoskop

What a fun little scope well worth it for anyone with some spare 160 objectives. This one even has the moving stage! Show us the other side where the controls are!!!
by BramHuntingNematodes
Fri Sep 11, 2020 9:26 pm
Forum: Microscopy accessories
Topic: Info needed on AO 820 "tome"
Replies: 7
Views: 142

Re: Info needed on AO 820 "tome"

I got an adapter to hold a ralph knife so sometimes I like to turn down the lights and put on a Donna summer record and get down (with making thin sections)
by BramHuntingNematodes
Fri Sep 11, 2020 12:47 pm
Forum: Microscopes and optics
Topic: Brass Rack and pinions designed to run dry?
Replies: 14
Views: 369

Re: Brass Rack and pinions designed to run dry?

Drying PTFE suspensions are also used on bike chains. They have a are my smell, but I use them on vise screws when the chips will be flying, but this seems like a particularly bad environment for microscopes.
by BramHuntingNematodes
Thu Sep 10, 2020 7:10 pm
Forum: Microscopes and optics
Topic: Help!! Parfocal length of old objectives, once and for all
Replies: 17
Views: 560

Re: Help!! Parfocal length of old objectives, once and for all

Yeah had a similar time adapting some old B&L objectives to an equally old Zeiss scope. Everything works well now!
by BramHuntingNematodes
Thu Sep 10, 2020 6:08 pm
Forum: Microscopy accessories
Topic: Adapter to mount B&L StereoZoom Pod to AO StereroStar stand?
Replies: 5
Views: 143

Re: Adapter to mount B&L StereoZoom Pod to AO StereroStar stand?

That's a real square-peg-in-a-round-hole proposition. How good is your welding?
by BramHuntingNematodes
Thu Sep 10, 2020 3:06 pm
Forum: For forum members who want to buy and sell equipment
Topic: [SOLD] Ultra-rare 5-axis Universal Stage for LOMO polarizing microscopes
Replies: 4
Views: 274

Re: Selling Ultra-rare 5-axis Universal Stage for LOMO polarizing microscopes

I cannot afford it myself, but it is an amazing and beautiful object. Thank you, and I hope someone can pony up this paltry sum for it.
by BramHuntingNematodes
Thu Sep 10, 2020 6:16 am
Forum: Specimens, samples and slides
Topic: Cargill immersion oil "B" probably 1960s
Replies: 16
Views: 1435

Re: Cargill immersion oil "B" probably 1960s

Yeah chemicals from the 60s at a bare minimum have at least a little lead and nicotine in them too
by BramHuntingNematodes
Wed Sep 09, 2020 4:22 am
Forum: My microscope
Topic: Carl Zeiss Jena Nr. 154618 help!
Replies: 11
Views: 389

Re: Carl Zeiss Jena Nr. 154618 help!

Be very careful cleaning the lacquered brass! Very diluted mild detergent with no alcohol is all you should use. Better yet clean it with Johnson's paste or renaissance wax. Also I would not recommend WD-40 or any aerosol on the lacquer either. It's not worth ruining the beautiful finish on that in...
by BramHuntingNematodes
Tue Sep 08, 2020 11:30 pm
Forum: Illumination Techniques
Topic: WHY no side illumination in darkfield? (noob)
Replies: 8
Views: 307

Re: WHY no side illumination in darkfield? (noob)

Oh how ho very interesting let's see a picture or two.

A dark field condenser will not need stops but may well need a drop of oil on top and to be touching the bottom of the slide
by BramHuntingNematodes
Tue Sep 08, 2020 8:59 pm
Forum: Microscopes and optics
Topic: Bausch & Lomb SZ7 Coaxial Illuminator design defect
Replies: 2
Views: 136

Re: Bausch & Lomb SZ7 Coaxial Illuminator design defect

Luckily this one is nearly perfect, although I have had my eye out for one for the last year and if you want to pay prices like I pay your have to wait again at least that long as most had eyepiece tubes missing, objectives removed, piece of masking tape over where an illuminator had been, carvings,...
by BramHuntingNematodes
Tue Sep 08, 2020 5:04 pm
Forum: Microscopes and optics
Topic: Bausch & Lomb SZ7 Coaxial Illuminator design defect
Replies: 2
Views: 136

Bausch & Lomb SZ7 Coaxial Illuminator design defect

The SZ7 is a great stereoscope and frequently used examples come up with the coaxial illuminator option either with the housing or with a conspicuous void in the back (the bulb holder in the picture below is almost invariably gone). Coaxial illumination may not be the best option if you're not inspe...
by BramHuntingNematodes
Tue Sep 08, 2020 4:12 pm
Forum: Pictures and Videos
Topic: Bacteria Made Biofilm
Replies: 2
Views: 112

Re: Bacteria Made Biofilm

Good pictures-- I particularly like the first two.
by BramHuntingNematodes
Tue Sep 08, 2020 3:10 pm
Forum: Microscopes and optics
Topic: Delaminated objective - how NOT to repair it!
Replies: 15
Views: 1116

Re: Delaminated objective - how NOT to repair it!

BramHuntingNematodes wrote:
Tue Sep 08, 2020 3:07 pm
yes but as I recall the optical axis is not normal to the cleavage plane. I think this one of the reasons grinding lenses out of it is particularly difficult.
wait no that was for calcite crystals when making nomarski prisms
by BramHuntingNematodes
Tue Sep 08, 2020 3:07 pm
Forum: Microscopes and optics
Topic: Delaminated objective - how NOT to repair it!
Replies: 15
Views: 1116

Re: Delaminated objective - how NOT to repair it!

yes but as I recall the optical axis is not normal to the cleavage plane. I think this one of the reasons grinding lenses out of it is particularly difficult.
by BramHuntingNematodes
Mon Sep 07, 2020 3:06 pm
Forum: Beginner's corner
Topic: Which to choose?
Replies: 7
Views: 336

Re: Which to choose?

I'd suggest just using the scope you now have for a while. It's a decent scope and fairly priced. If and when ready to upgrade in the future we can help you take your time and get you to a next best step. It will probably take no small amount of practice for a new microscopist to be able to set up ...
by BramHuntingNematodes
Mon Sep 07, 2020 2:59 pm
Forum: Microscopy accessories
Topic: LED conversion for inverted microscope
Replies: 11
Views: 323

Re: LED CONVERSION FOR INVERTED ZEISS

Seems expedient. I like leds but have not been able to get great results from the flashlights I have had. If you ever feel that this may be the case, I have used free xpl2 leds and more recently osram oslon leds with typical cri well into the 90s. I can recommend them along with, if you were for ins...
by BramHuntingNematodes
Mon Sep 07, 2020 2:44 pm
Forum: Microscopes and optics
Topic: Metallurgy objectives
Replies: 9
Views: 282

Re: Metallurgy objectives

Hooray bring on the 'todes. Nematode taxonomy is undergoing enormous shifts. Any keys I might use may therefore be outdated. A pronounced and vicious looking stylet is a feature on many nematodes, but I'll do my best!
by BramHuntingNematodes
Mon Sep 07, 2020 5:46 am
Forum: Microscopes and optics
Topic: Metallurgy objectives
Replies: 9
Views: 282

Re: Metallurgy objectives

As an addendum I could point out the metallurgical objectives for reflected dark field have additional differences which don't necessarily prevent them from being used in transmitted light settings but diminishes the working distance and sometimes requires a different thread standard. You should be ...
by BramHuntingNematodes
Fri Sep 04, 2020 5:00 pm
Forum: Pictures and Videos
Topic: Edge of an African Violet Petal
Replies: 2
Views: 118

Re: Edge of an African Violet Petal

Now hey that's neat
by BramHuntingNematodes
Fri Sep 04, 2020 2:26 pm
Forum: Microscopes and optics
Topic: Cause of scratches on objective
Replies: 5
Views: 201

Re: Cause of scratches on objective

there is a common fault where a high power objective that is not well parfocal with the lower powered ones crashes into the sample as it's being spun on the turret. I have a lens that very clearly has a significant bend to the front of the case from this, but the optics seem miraculously unaffected....
by BramHuntingNematodes
Fri Sep 04, 2020 1:43 pm
Forum: Microscopes and optics
Topic: Cause of scratches on objective
Replies: 5
Views: 201

Re: Cause of scratches on objective

When being turned the case acquires minute grooves, exposure to chemicals or water causes the chrome to peel off like that
by BramHuntingNematodes
Wed Sep 02, 2020 5:45 pm
Forum: Introduce yourself
Topic: new member from northern michigan
Replies: 4
Views: 580

Re: new member from northern michigan

I just got a tea plant. I assume growing conditions are similar to camellia japonica. I have two coffee plants and those are good for finding nematodes in.
by BramHuntingNematodes
Wed Sep 02, 2020 3:30 pm
Forum: Introduce yourself
Topic: Hello from Sweden, Stockholm
Replies: 3
Views: 167

Re: Hello from Sweden, Stockholm

hmm quite a broad range moreover you could collect marine diatoms whilst sailing
by BramHuntingNematodes
Wed Sep 02, 2020 1:19 pm
Forum: Beginner's corner
Topic: Magnification of oil immersion
Replies: 21
Views: 497

Re: Magnification of oil immersion

FungusMan wrote:
Wed Sep 02, 2020 11:24 am
So when in science there is a x100 image and captioned as x1000, in reality, it is not!
well it depends on how big they print the image
by BramHuntingNematodes
Wed Sep 02, 2020 2:06 am
Forum: Beginner's corner
Topic: Finally Picked up a Microscope (Carl Zeiss)
Replies: 13
Views: 401

Re: Finally Picked up a Microscope (Carl Zeiss)

Apo can correct where I'm mistaken, but that's one of them late japanese B&L galen's. It's more of like a clinical scope, and I wouldn't expect it to look much superior to them old Zeiss lenses if they're all in good shape. Might give them both a try though and tell us what you think!
by BramHuntingNematodes
Tue Sep 01, 2020 6:45 pm
Forum: Microscopes and optics
Topic: plan or neofluar
Replies: 15
Views: 401

Re: plan or neofluar

If you are going to resort to stacking, then the depth of field argument weakens too
by BramHuntingNematodes
Tue Sep 01, 2020 4:45 pm
Forum: Microscopes and optics
Topic: plan or neofluar
Replies: 15
Views: 401

Re: plan or neofluar

they can't be too plan how else you gonna market the plan neofluars and infinity focused scopes
by BramHuntingNematodes
Tue Sep 01, 2020 4:30 pm
Forum: Microscopes and optics
Topic: plan or neofluar
Replies: 15
Views: 401

Re: plan or neofluar

they can't be too plan how else you gonna market the plan neofluars