Search found 45 matches

by Interference
Wed Mar 08, 2017 2:16 am
Forum: Microscopes and optics
Topic: Olympus CH2 objectives
Replies: 14
Views: 3807

Re: Olympus CH2 objectives

I had a CH2 set up with its humble 10x 0.25, with the lamp adjusted for brightness. Changed to a Nikon 10x 0.45 Only difference I could see was it got brighter. Turned the lamp down, then it looked the same. Swap to Nikon eyepiece, same . I was a bit disappointed :| . Ok if I really really look for ...
by Interference
Thu Mar 02, 2017 5:39 pm
Forum: Camera systems and imaging
Topic: USB camera vs DSLR
Replies: 12
Views: 4673

Re: USB camera vs DSLR

I have one I use on a stand permanently too. Seems OK. Tiny noise means a detectable vibration (try a camera phone sensor) but I don't think it affects anything much. It's VERY small. Warning - 1) I made an error with its predecessor: I plugged a Battery-replacement while ON, in to the camera which ...
by Interference
Thu Mar 02, 2017 2:23 am
Forum: Microscopes and optics
Topic: Lomo MIN-1 and a box of bits
Replies: 14
Views: 2726

Re: Lomo MIN-1 and a box of bits

OK - Note the same (Lomo size) dovetail is used where the bino mounts onto the prism housing, detatched for stability in some of these. The "D" part is thick, about 11mm, & 13.5mm thick for the 20mm wide center section.
by Interference
Thu Mar 02, 2017 12:16 am
Forum: Microscopes and optics
Topic: Lomo MIN-1 and a box of bits
Replies: 14
Views: 2726

Re: Lomo MIN-1 and a box of bits

Ah, got you. I thought they were all different, thanks.
by Interference
Wed Mar 01, 2017 10:23 pm
Forum: Microscopes and optics
Topic: Lomo MIN-1 and a box of bits
Replies: 14
Views: 2726

Re: Lomo MIN-1 and a box of bits

Trinoc is the same size as the Lomo's dovetail - coincidence? Were there independent makers??

Doesn't look like I'll be using it!
by Interference
Wed Mar 01, 2017 10:03 pm
Forum: Microscopes and optics
Topic: Lomo MIN-1 and a box of bits
Replies: 14
Views: 2726

Re: Lomo MIN-1 and a box of bits

Yes Eddie it does slide off - it's a nice fit in fact. I wondered if anyone would recognize the 38mm dovetail. Are these things a standard? I could only think it could be for a camera, but it's a trinoc, so, errm, derr... 20170301_215314_resized.jpg The thread on top where the chimney/tube would go ...
by Interference
Wed Mar 01, 2017 3:02 am
Forum: Microscopes and optics
Topic: Lomo MIN-1 and a box of bits
Replies: 14
Views: 2726

Re: Lomo MIN-1 and a box of bits

Here's a snap of the cream trinoc: With the lever over one side, the vertical path is clear - no optics. The only marking is "1x" for straight up and "1.6x" to the eyepieces, which are absent. And 55 to 75 for i-p distance. Is that a mount for something, with the dovetail (38mm) on one eyetube? What...
by Interference
Wed Mar 01, 2017 2:16 am
Forum: Camera systems and imaging
Topic: USB camera vs DSLR
Replies: 12
Views: 4673

Re: USB camera vs DSLR

Bill - if not too late If you go for a newer Canon be careful if it's for stills. It's not just mirror lockup you want but also one with a vibration free shuttter. Electronic First Curtain Shutter they all have, but they make a small "tick" noise, which in some cases causes a problem. Most are fairl...
by Interference
Tue Feb 28, 2017 11:19 am
Forum: Microscopes and optics
Topic: Lomo MIN-1 and a box of bits
Replies: 14
Views: 2726

Re: Lomo MIN-1 and a box of bits

Thanks guys. (I wanted to post something so was lazy and didn't take photos of the real thing ) I'll take a few snaps. I'll see if the cream coloured head appears to have a tube lens in it - I didn't think to look. :roll: Now, I have some Nikon CF Infinites, I wonder if they put "correction" in thei...
by Interference
Tue Feb 28, 2017 3:03 am
Forum: Microscopes and optics
Topic: Lomo MIN-1 and a box of bits
Replies: 14
Views: 2726

Lomo MIN-1 and a box of bits

The MIN-1 came in its metal lunchbox. It was missing the wedge and wave plate but I found those, so it's complete. (9, 40, 60x) I also have a box of (probably mostly) Lomo parts. I'd like to use it for photography. I have FX & APS cameras. I'd appreciate comments on what fits what, or what's worth u...
by Interference
Fri Jun 10, 2016 9:06 pm
Forum: Microscopy accessories
Topic: My New Microtome
Replies: 80
Views: 17263

Re: My New Microtome

:? Not sure what the question is... :? Viruses are too small for a normal light microscope so you need something else, different techniques like confocal and STED, flourescence - 2 photon etc. The Focus of the beam(s) is much smaller than the thickness of the sample. It's a fascinating subject, ther...
by Interference
Fri Jun 10, 2016 8:14 pm
Forum: Microscopy accessories
Topic: My New Microtome
Replies: 80
Views: 17263

Re: My New Microtome

Methinks you don't, you use one of these in STED :)
by Interference
Thu Jun 09, 2016 3:16 pm
Forum: Microscopy accessories
Topic: My New Microtome
Replies: 80
Views: 17263

Re: My New Microtome

Brilliant answer, thanks John. I assume the Leitz chopper retracts on the up stroke, so perhaps I'll look at keeping that one if I can fettle it, and release a rocker.
by Interference
Thu Jun 09, 2016 8:02 am
Forum: Microscopy accessories
Topic: My New Microtome
Replies: 80
Views: 17263

Re: My New Microtome

Question to 'tomists, which type is suitable for what? This is a naive question from someone who has a few but not used them in anger. Oversimplifying, there's the Hand variety, then Cambridge rocker type then some heavy rotaries such as the Shandon or Leitz. (Ignoring sledge, cryo, vibro, ultra) If...
by Interference
Wed Jun 08, 2016 6:38 pm
Forum: Microscopy accessories
Topic: My New Microtome
Replies: 80
Views: 17263

Re: My New Microtome

Please excuse the hijack. I'm hoping to connect with someone about a Leitz 1512, & thought someone may be following this thread.
I've started a New Post.
by Interference
Tue Jun 07, 2016 4:51 pm
Forum: Microscopy accessories
Topic: Leitz 1512 microtome
Replies: 2
Views: 1972

Leitz 1512 microtome

I have custody of one of these while handling/moving it on, for the widow of a plant-botherer. It needs some therapy - disconcerting noises and feed problems, to be investigated. I haven't looked into it much yet. Not sure it's complete. I have the online User Manual, but does anyone know of somethi...
by Interference
Mon May 02, 2016 11:17 pm
Forum: Camera systems and imaging
Topic: Exorcising a Vibration Demon
Replies: 36
Views: 6872

Re: Exorcising a Vibration Demon

Crater Eddie wrote:I remember watching a PBS special on Harold "Pop Flash" Edgerton when I was a kid back in the 70's, he set a sheet of newspaper on fire just by holding it close to a large flashtube.
Neat stuff.
CE
What was the Guide Number for that?
by Interference
Mon May 02, 2016 3:13 pm
Forum: Camera systems and imaging
Topic: Exorcising a Vibration Demon
Replies: 36
Views: 6872

Re: Exorcising a Vibration Demon

....so poked the flash head very near the subject, then found that the flash is also enough to move the subject unless it's nailed to the slide....... ^ Are you sure about that? Flash has no moving parts, doesn't it? Screwed-down wireless flash should not introduce any vibration? Yes, dead sure! Pu...
by Interference
Sun May 01, 2016 12:43 am
Forum: Camera systems and imaging
Topic: Exorcising a Vibration Demon
Replies: 36
Views: 6872

Re: Exorcising a Vibration Demon

Sounds simple, doesn't it - "just use a tripod". I tried a Nikon copy stand which is hopeless :). The "poor man's Sorbothane" is apprently a mostlly-deflated inner tube, from something like a wheelbarrow tire. I haven't tried that one! Sorry if this has been posted al;ready... Something else I think...
by Interference
Sun May 01, 2016 12:17 am
Forum: Camera systems and imaging
Topic: Exorcising a Vibration Demon
Replies: 36
Views: 6872

Re: Exorcising a Vibration Demon

The technique I use, but need to improve, (I mostly use flash now...) is the one of a lump of granite (ex kitchen worktop) under the scope to increase the mass, and Sorbothane(TM) feet under that. They're a squishy sort of rubber which absorbs vibrations remarkably well. It's not "bouncy" rubber. If...
by Interference
Tue Apr 12, 2016 10:34 pm
Forum: Microscopes and optics
Topic: Vickers M70, polarizing
Replies: 11
Views: 2314

Re: Vickers M70, polarizing

The original bulb is 6V 15W. I'm told similar to a Zeiss but the element's the "wrong direction". Old tungsten non halogen. I suspect that a diffuse source would be OK, - my doubts about Köhler illumination are for another thread! Thanks I'll look for a reference number. Some of the very best LEDs a...
by Interference
Tue Apr 12, 2016 12:39 am
Forum: Specimens, samples and slides
Topic: An improved double-embedding technique, finally!
Replies: 6
Views: 1674

Re: An improved double-embedding technique, finally!

Great stuff John
I must get round to GCSE biology one day. I didn't do any at school :(
by Interference
Tue Apr 12, 2016 12:26 am
Forum: Microscopes and optics
Topic: Vickers M70, polarizing
Replies: 11
Views: 2314

Re: Vickers M70, polarizing

I gather that if you change the illuminator you should change an internal magnifier part. I assume that's because the tube length would change too. They seem to built like the proverbial outhouse, though there's a problem getting bulbs now. Now, would a LED light source "work" the same way for a M-L...
by Interference
Sun Apr 10, 2016 7:55 pm
Forum: Microscopy accessories
Topic: What to do with an old micrometer?
Replies: 16
Views: 4434

Re: What to do with an old micrometer?

Gandhi was assassinated, Land prduced a Polaroid camera and quantum physics took hold.
And my dad got a Rolls razor!
1948 :)

By the way check a modern disposable razor - they're pretty amazing edges. Often a very hard cutting blade spot welded to a less brittle support.
by Interference
Sun Apr 10, 2016 11:34 am
Forum: Microscopy accessories
Topic: What to do with an old micrometer?
Replies: 16
Views: 4434

Re: What to do with an old micrometer?

I thought I was going to recognise the thread you linked to Dave, but no, the ones (2 or 3) I'd seen were different. These things have a cult following. Apart from Rolls' original advice about the strop, with their special products, there seems to be no real consensus on what to use. FWIW I found I ...
by Interference
Sun Apr 10, 2016 12:11 am
Forum: Microscopes and optics
Topic: Vickers M70, polarizing
Replies: 11
Views: 2314

Vickers M70, polarizing

A fw of these had incident light attachments.
I can't find much infformation on the Vickers scopes, though some look pretty nice..
Does anyone know it's generally possible to swap parts between their similar-looking scopes?
by Interference
Sat Apr 09, 2016 11:56 pm
Forum: Microscopy accessories
Topic: What to do with an old micrometer?
Replies: 16
Views: 4434

Re: What to do with an old micrometer?

Has anyone tried a Rolls blade on a 'tome?
Looking at the one I have under a stereo, the edge doesn't look particularly good to me. My "strop" is dry though. The advce on what to put on it, is rather random.
by Interference
Fri Apr 01, 2016 8:53 am
Forum: Microscopy accessories
Topic: My New Microtome
Replies: 80
Views: 17263

Re: My New Microtome

I have to make a wax block holder as well :(
I have the "pepper pot" thing but not the popular one with a screw clamp.

Would ordinary candle "work" or is the wax different?
by Interference
Fri Apr 01, 2016 1:34 am
Forum: Microscopy accessories
Topic: HAND MICROTOME on ebay
Replies: 18
Views: 5398

Re: HAND MICROTOME on ebay

Pith is the central part of the stem of a plant. Well sure, but the Brunel's piston is 30mm diameter or so , so you'd need to take a lot of, er, elderberry plant. Baobabs are fast growing and pithy, but the last one I saw was in Madagascar ;) I think your thing may have a smaller piston? There's a ...
by Interference
Fri Apr 01, 2016 12:54 am
Forum: Microscopy accessories
Topic: My New Microtome
Replies: 80
Views: 17263

Re: My New Microtome

Phone pictures of a blade holder.
I should have bought the microtome just for the holder!
I'm not certain if it's for the single edged blades, the slot which might fit the back edge, doesn't look in quite the right place: