Search found 3926 matches

by mrsonchus
Sun Jan 03, 2021 12:38 am
Forum: Microscopes and optics
Topic: Leitz dry objective for high magnification
Replies: 25
Views: 893

Re: Leitz dry objective for high magnification

Hi Rossf - here's one of the 100X listed now in the U.K.. The seller is one from whom I've bought several times and is totally honest and reliable in my experience. Very likely responsive to an offer too. I've no connection whatsoever with this seller beyond my custom of course.
by mrsonchus
Wed Dec 30, 2020 12:07 am
Forum: Microscopes and optics
Topic: Leitz dry objective for high magnification
Replies: 25
Views: 893

Re: Leitz dry objective for high magnification

Here's a link to an explanatory (internal) Leitz memo at the time of Leitz adoption of the std 160mm TL....
by mrsonchus
Tue Dec 29, 2020 8:22 pm
Forum: Microscopes and optics
Topic: Leitz dry objective for high magnification
Replies: 25
Views: 893

Re: Leitz dry objective for high magnification

They really were superb.
You need to ensure that your TL is correct for your 'scope - there are 160mm and 170mm (Ala Orthoplan in the above case) 'scopes and objectives.
by mrsonchus
Tue Dec 29, 2020 7:53 pm
Forum: Microscopes and optics
Topic: Leitz dry objective for high magnification
Replies: 25
Views: 893

Re: Leitz dry objective for high magnification

Thank you very much Mrsonchus for your very helpful and very detailed reply! The "Water immersion", in terms of time and "feasibility", in a very good compromise. Unfortunately, I'm not able to view your images, but I'm beginning to hunt the two W Leitz (especially the W50 1.00) Thansk again. Toni ...
by mrsonchus
Tue Dec 29, 2020 5:39 pm
Forum: Microscopes and optics
Topic: Leitz dry objective for high magnification
Replies: 25
Views: 893

Re: Leitz dry objective for high magnification

Thank you very much BMN, I will try to follow your advice. In the old Leitz catalog there are many "oil" lenses, even of medium power ... Ther is also some Water objective (W engraved)...they are said to be easier to use, but equally good even if water has smaller refractive index than oil...and pe...
by mrsonchus
Fri Dec 18, 2020 11:54 pm
Forum: Camera systems and imaging
Topic: Motic SMZ143 with Motic 2x SLR Projection Lens
Replies: 42
Views: 4616

Re: Motic SMZ143 with Motic 2x SLR Projection Lens

Hi, I recently acquired a Nikon SMZ800 my first job was also to attempt to attach a camera.... The top of the SMZ's photoport is the target connector! https://lh3.googleusercontent.com/pw/ACtC-3eUwRq156brLD0MSRMKItAVKzAsP5WGh2tR-Hy1xM-yfyuQH4xXxvO10n7IKpWo1DR6CMc8zYrecsNymK94l7-QVQZgSfEN0VgFF89Aq3KO...
by mrsonchus
Tue Dec 15, 2020 8:46 pm
Forum: Pictures and Videos
Topic: Ilex leaf with worm hole - pen ink stain
Replies: 11
Views: 982

Re: Ilex leaf with worm hole - pen ink stain

Hi Bob - yes, not only do such 'infections' make good images, they're pretty easy to achieve also. The penultimate image is safranin + alcian-blue (an alternative to safranin + fast-green). I prefer fast-green for accuracy and subtlety of finest detail but alcian-blue for more 'drama' in vivid colou...
by mrsonchus
Tue Dec 15, 2020 2:32 pm
Forum: Pictures and Videos
Topic: Life on a grain of sand
Replies: 6
Views: 1203

Re: Life on a grain of sand

Great idea for an interesting thread - enjoying the mysteries.
by mrsonchus
Mon Dec 14, 2020 3:51 pm
Forum: Pictures and Videos
Topic: Ilex leaf with worm hole - pen ink stain
Replies: 11
Views: 982

Re: Ilex leaf with worm hole - pen ink stain

Hi, this was in the tissue - a typically 'mushy-brown' appearance of an infected closed-vegetative bud. It's a handy stain and very cheap. I also have sets of slides that I have made of infected plant tissue, e.g. Sonchus.arvensis stem and leaf tissue. The permanently-mounted slides are great as I a...
by mrsonchus
Mon Dec 14, 2020 12:14 pm
Forum: Pictures and Videos
Topic: Ilex leaf with worm hole - pen ink stain
Replies: 11
Views: 982

Re: Ilex leaf with worm hole - pen ink stain

Hi, I use pre-made lactophenol cotton-blue for live staining fungus - high contrast and pretty good.
Here's an image of some fungus which as far as I can remember came from a rotting plant bud. Water-mounted with coverslip and stained with LP stain....
fungus stain.jpeg
fungus stain.jpeg (91.85 KiB) Viewed 935 times
by mrsonchus
Sun Dec 13, 2020 5:59 pm
Forum: For forum members who want to buy and sell equipment
Topic: WANTED 88-90mm frosted glass round stage plate
Replies: 11
Views: 985

Re: WANTED 88-90mm frosted glass round stage plate

deBult wrote:
Sun Dec 13, 2020 5:33 pm
I ordered the same eBay set a few months ago for my Olympus SZ, it took some time to arrive, pretty pleased with them.
Would it be possible to post an image of them? They sound interesting...
by mrsonchus
Sun Dec 13, 2020 11:31 am
Forum: Camera systems and imaging
Topic: Motic SMZ143 with Motic 2x SLR Projection Lens
Replies: 42
Views: 4616

Re: Motic SMZ143 with Motic 2x SLR Projection Lens

Ahhh PVC waste-pipe. I Used a bit of this to make a quick mount for a Canon DSLR with one of those rather poor eyepiec connector with optics adapters - works well and parfocal but I'm going to use a projector eyepiece as this is the best way I've found so far for quality. Here's the DSLR on it's was...
by mrsonchus
Sun Dec 13, 2020 10:26 am
Forum: Pictures and Videos
Topic: Congratulations Mrs. Sporangium its a Zoospore
Replies: 8
Views: 856

Re: Congratulations Mrs. Sporangium its a Zoospore

Not quite sure what's going-on in the image, but I like the image very much!
by mrsonchus
Sun Dec 13, 2020 10:23 am
Forum: For forum members who want to buy and sell equipment
Topic: WANTED 88-90mm frosted glass round stage plate
Replies: 11
Views: 985

Re: WANTED 88-90mm frosted glass round stage plate

I think my best-bet is to grind 2mm from the diameter of the ones I have spare, formerly used on my Amscope.... Worth a try. Meanwhile simply placing the Amscope one over the recess is working very well apart from the fact that it sits of course proud of the table surrounding it. Beneath the recess ...
by mrsonchus
Sun Dec 13, 2020 3:16 am
Forum: Microscopes and optics
Topic: New Stereo - Nikon SMZ800
Replies: 17
Views: 1612

Re: New Stereo - Nikon SMZ800

That's very kind einman thanks. That new one looks just the job, but the dratted import duties are going to douple the price in the U.K..... :(
by mrsonchus
Sun Dec 13, 2020 2:34 am
Forum: For forum members who want to buy and sell equipment
Topic: WANTED 88-90mm frosted glass round stage plate
Replies: 11
Views: 985

Re: WANTED 88-90mm frosted glass round stage plate

Thanks Pete, I sent off for one of these this evening, may take a while but at that price it's worth a look - if it's a little big I may be able to take it down very slightly.... Ideally I'd like a couple of the Nikon ones but so far nothing's out-there. They're exactly 3½" diameter.
by mrsonchus
Sat Dec 12, 2020 11:23 pm
Forum: For forum members who want to buy and sell equipment
Topic: WANTED 88-90mm frosted glass round stage plate
Replies: 11
Views: 985

WANTED 88-90mm frosted glass round stage plate

WANTED 88-90mm frosted glass round stage plate for stereo microscope.
by mrsonchus
Sat Dec 12, 2020 9:57 pm
Forum: Microscopes and optics
Topic: New Stereo - Nikon SMZ800
Replies: 17
Views: 1612

Re: New Stereo - Nikon SMZ800

Very nice image einman. I spotted and bought irises for the SMZ800 and they've added a nice measure of flexibility to the light/focus mixing that I really like with a stereo 'scope and Botanical dissection. The SMZ is really very nice indeed, and I've today finished fitting the LED panel under the s...
by mrsonchus
Sat Dec 12, 2020 11:22 am
Forum: Pictures and Videos
Topic: Daphania Stack test
Replies: 5
Views: 758

Re: Daphania Stack test

These are very nice pictures! Great also to begin-with. Your basic technique is demonstrably sound I'd say, a great jump-off-point. Direction of image-taking, one direction only, either up or down as it were for the set. Some stacking software prefers or is optimised by design for one or the other b...
by mrsonchus
Fri Dec 11, 2020 10:58 am
Forum: For forum members who want to buy and sell equipment
Topic: For sale: Blade holder for the hand / cylinder / table microtome
Replies: 9
Views: 3450

Re: For sale: Blade holder for the hand / cylinder / table microtome

Hi, yes I have this exact hand-microtome, bought from Brunel Microscopes - from whom I've bought much equipment and even new microscope since I started microscopy some 5 years ago now. They're thoroughly trustworthy and always helpful. The best way to contact them is by 'phone. I don't really use mi...
by mrsonchus
Fri Dec 11, 2020 9:29 am
Forum: Beginner's corner
Topic: Is this normal?
Replies: 34
Views: 2654

Re: Is this normal?

Great news, well-done! Always a way in this fine forum!
This has been an interesting and informative thread for me.

Congrats on a job well done.
by mrsonchus
Thu Dec 10, 2020 10:55 pm
Forum: Microscopes and optics
Topic: New Stereo - Nikon SMZ800
Replies: 17
Views: 1612

Re: New Stereo - Nikon SMZ800

UPDATE

The Amscope I placed on e-bay has sold almost straight away - a few funds clawed back....
by mrsonchus
Thu Dec 10, 2020 7:51 pm
Forum: Beginner's corner
Topic: Is this normal?
Replies: 34
Views: 2654

Re: Is this normal?

Agree with Hans - it's like a thrust-plate on a clutch - grease is recommended to be as thin as you can get for the fine focus I think - thick grease is for the coarse focus. Friction from spring/spring-washers may be the braking mediator for the fine focus.
by mrsonchus
Thu Dec 10, 2020 4:27 pm
Forum: Beginner's corner
Topic: Is this normal?
Replies: 34
Views: 2654

Re: Is this normal?

Oh yes - certainly forget the complete tear-down, just concentrate carefully on the mechanism in question - good luck!
by mrsonchus
Thu Dec 10, 2020 4:25 pm
Forum: Microscopes and optics
Topic: New Stereo - Nikon SMZ800
Replies: 17
Views: 1612

Re: New Stereo - Nikon SMZ800

The irisis came this morning but I had no time to fit and try them! :cry: Anyway I just came home and gave them a very quick try - they took all of 1 minute to install between the body and phototube. At first look they are very effective indeed - I was taken-aback by their contribution. As possibly ...
by mrsonchus
Thu Dec 10, 2020 11:57 am
Forum: Microscopes and optics
Topic: New Stereo - Nikon SMZ800
Replies: 17
Views: 1612

Re: New Stereo - Nikon SMZ800

Yes I struggled with the choice once I'd decided on a larger budget, the Wild classics such as the incredibly configurable M3 series or the beautiful M8 with zoom and larger range - the shift-head for coaxial photography....... Then there's the venerable Olympus SZH - a beautiful 'scope also. The de...
by mrsonchus
Thu Dec 10, 2020 11:32 am
Forum: Beginner's corner
Topic: Is this normal?
Replies: 34
Views: 2654

Re: Is this normal?

Great images, now I perused an article earlier - have a look at this link - a complete teardown of such a mechanism! ...... I'm pretty sure you're on your way with some progress - just be very careful and make sure you have suitable tools - buy a few if you need to - we all tend to build-up a 'mini ...
by mrsonchus
Thu Dec 10, 2020 6:09 am
Forum: Microscopes and optics
Topic: New Stereo - Nikon SMZ800
Replies: 17
Views: 1612

Re: New Stereo - Nikon SMZ800

Hi, yes I agree - underrated often but very nice indeed - anything you have for this one is interesting - tell me more.... pm? I'm finding a 3 1/2" frosted glass stage-plate quite difficult to find - I don't suppose you have one or preferably two for it? The objective changer - love one, as well as ...
by mrsonchus
Thu Dec 10, 2020 12:53 am
Forum: Beginner's corner
Topic: Is this normal?
Replies: 34
Views: 2654

Re: Is this normal?

Hmm, that last line sounds like it may be connected with grease? I wonder if the fine-focus stability relies not upon tension but the viscosity of a grease which may cause this symptom? Someone here must have an insight into this as many here are very skilled engineers and renovators... My experienc...
by mrsonchus
Thu Dec 10, 2020 12:28 am
Forum: Beginner's corner
Topic: Is this normal?
Replies: 34
Views: 2654

Re: Is this normal?

I wonder if the fine-focus has a 'maximum travel' and it may be close to it? It may explain the tendency to move, which seemed reduced as to runed it to a different position before stopping. Maybe there's an optimal 'starting position' for fine focus in the middle of any range of vovement it may hav...