MicrobeHunter.com Microscopy Forum

Hi Wes,
great image!
Your investment in time and money proves useful, this really is a nice subject for DIC.

Bob

Plastic containers are safer to hike about with. I do,nt want to hijack OP.s thread here! Hi Charlie, your placton containers fit very well to the thread, so go ahead! In microscopy it is often the small items that are most important so I would be happy when you would share you experiences with you...

Hi Charlie, we just went to the coast, no ships , no sea-sickness! :lol: The are we were is a bay reaching into the main land, at the very northern border of Germany to Denmark. The water is brackish, I would estimate 1% salt content. Water quality is sometimes critical, there are times when the oxy...

Hi Doron, very nice images again with very creamy colours! I liked you glowing transmitted light image #5 very much too. Here are SEM images of foraminifera: http://www.mikrohamburg.de/HomePalaeo.html Here is a site with identified foraminifera, there is also a map of the locations: http://www.foram...

Hi Doron, for the amateur there is also a practical consideration: With a net or sieve you can increase the concentration of the plancton up to 100%. Then there is no oxygen available and especially the zooplacton will die very soon. On the other hand side it is nice to have a halfway rich concentra...

Here is a link to a detailed description: https://www.mikroskopie-forum.de/index.php?topic=23026.0 They were built around WW2 and surface occasionally on ebay and sell for under 100€. Mine was bought by a nurse apprentice in 1954. I have a box of histology slides from her too. Unfortunately I can't ...

Hi Charles, just some thoughts: Incident light can be used with different contrast techniques: brightfield - low contrast, not too usable Brightfield pol - simple techique for quite good images Darkfield - very good contrasty images, most versatile, I like it best DIC - expensive and especially good...

I often use a plancton sieve made from a piece of PP tube of 75mm diameter and lenght and pour water with a plastic box through it. This is for sure not perfect but perfectly pocketable. But if I would start to sew a fine net from new material Iwould have a quick look into the design guide and see w...

Hi Michael, thank you for posting the report on net design! So far I only new suggestions for the design but no explanations of the decision making process. Hi Kurt, thank you for showing your equimpent! There are several hints that will be usefull for me. I didn't know pool supplies as a source for...

Baltic sea, and you can save a search on ebay and just wait.

Bob

Hi Wes,
the Junior is an especially nice microscope.
This net was originally sold by Kosmos, a company selling school equipment and experiment kits. They don't sell them any more. I bought it used on ebay for 25€.

Bob

Thank you for posting, I like your live diatom films and images very much!

Bob

Wes wrote: This hobby is the ultimate time and money sink but its worth it (not according to everyone in my household though )

Hi Wes, isn't this the definition of a proper hobby: "Maximum effort for minimal practical value"?


Bob

Hi together, I'm about to go on a trip to the sea for a couple of days, just my wife and me, the boys stay at home. This is what I will bring with me: -Winkel Zeiss traveling microscope from mid 1950s with original stacked lens, 20:1 Zeiss Jena and 40:1 Lomo and nice Zeiss Jena P eyepiece (non comp....

Many microscopists have at least one additional simple microscope to take outdoors, on trips or to meetings. This would be a role where a beginners microscope could fit in when he moves on to something better.

Bob

As far as I know methyl cellulose is what is used to put wallpapers up the wall, you get it in DIY or decorating markets.

Bob

Hi Enzo, just today I brought a microscope of this series home from our group meeting to service it. The interpuillary distance is set by changeing the angle between the tubes - I haven't seen this system before. The eyepieces are in terribly delaminated condition and I have heard of similar problem...

Given that most 4 objective microscopes come with 4x, 10x, 40x, and 100x (oil immersion) objectives fitted, is it better to swap the 100x (oil) for a 60x objective. From what I read, unless you are interested in bacteria, the 100x would be rarely used, and that for most subjects, up to 400x magnifi...

Hi together, we had our group meeting today and met in a restaurant afterwards with a couple of members. One topic was slowing down fas placton animals. One member reported a couple of methods he has applied with success: -Osminumtetroxyd-fumes (Absolutely not recommended, highly toxic, he found a b...

Hi Dave, as far as I can remember Swift was an old/ancient british microscope maker. Later there was an american company importing japanese instruments like the FM-31 under this name, 1970s on. Todays Swift offerings look different than the rest of the bunch, but they also seem to be located higer o...

For somebody who wants to buy a new microscope in the lower price ranges it is very difficult to identify a good buy. If the importers of chinese microscopes would start to stay away from overly enthusiatic advertising claims and would start ordering some kind of basic standardized "Volksmikroskop",...

Thanks Bob, that is very informative, and nice when someone uses a real name as their 'user name', or if not, actually signs their post with it :) On forums its a bit like a 'secret society', where people hide behind a fictitious user names, and are reluctant to disclose even what part of the world...

What I was thinking about was an incident illuminator that works with a transparent plastic part as a light transmitter. This could be quite flat in the middle area to fit under higher powered objectives and be thicker are the outer area to fit to the size of the LED. With polished surfaces all arou...

What I don't know, and perhaps you, or someone here can enlighten me, is the situation with microscope objective lenses. Are the achromats just basic single glass element construction, or are they doublets. Moving up to plan objectives, are these of triplet element construction. ?? Hi Dave, an achr...

Hobbyst46 wrote:... for epi-illumination ...

Hi Doron,
do you want to use this setup with higher powered objectives, offering light low down in a flat angle?

Bob

Colour photo enlarger used a white box into which light was projected through three adjustable filters. The mixed light in the box was used to project the negative on the paper. This would work for a microscope too, the question is how far from a perfect illumination this will be. With a diffused ac...

MichaelG. wrote:

MichaelG. wrote: ... If I do happen to find a price, I will post it for reference

As promised:
https://www.villalighting.com/2310304/P ... ND_1114078

MichaelG.

They say 1750 Lumens from 96W - this seems a faily low ratio! This is about what a halogen lamp offers.

Hi together, I knew a guy who had a small electronics company and supplied the NDR (NordDeutscherRundfunk = public north german broadcasting) with LED light panels for TV studios and ring lights for TV cameras. This was about 10 years ago and he used a mixture of different coloured LEDs to acheive t...

I have not dealt with Askania but have heard only good things of them. They are said to be competent microscope service people. With it's tradition Rathonow probably has quite few well trained and experienced optics and mechanics potential employees. As far as I know there is also a company that ser...

I have read somewhere that much of the Zeiss Jena microscope production was actually built in the ROW plant, Rathenow, formerly Emil Busch. I don't know whether this is true and to what extent. Zeiss Jena was by far the most appreciated company in the DDR and a Zeiss name tag raised the value as a e...