Search found 271 matches

by Element 56
Fri Oct 23, 2020 7:32 pm
Forum: Microscopes and optics
Topic: Cleaning wave plates
Replies: 5
Views: 71

Re: Cleaning wave plates

It's easier to get a nice clean wet wipe across the entire prism if you disassemble the plate. Trying to swirl around inside the viewing aperture is more likely to leave debris and scratch the surface. I agree but those might be glues in place or there could be a snap ring. Must be careful not to b...
by Element 56
Fri Oct 23, 2020 7:07 pm
Forum: Microscopes and optics
Topic: Cleaning wave plates
Replies: 5
Views: 71

Re: Cleaning wave plates

Yes it would be much softer, however, I don't know for sure that in your case you will actually be cleaning the mica. I could be wrong but you may actually have a mica disc sandwiched between two pieces of optical glass. May be someone else can chime in here that is more familiar with the Japanese e...
by Element 56
Fri Oct 23, 2020 6:25 pm
Forum: Microscopes and optics
Topic: Cleaning wave plates
Replies: 5
Views: 71

Re: Cleaning wave plates

I clean mine with an aqueous solution and lens wipes. I loosely wrap a piece of the wipe around a small swab with plenty of cushion between the end of my wrap and the swab. That way there's no hard backing so it's more like a brush. Saturate the makeshift swab/brush so you can sweep the surface in a...
by Element 56
Thu Oct 22, 2020 7:39 pm
Forum: My microscope
Topic: The easiest microscope to tweak, modify
Replies: 24
Views: 304

Re: The easiest microscope to tweak, modify

I rather like the labophot/optiphot line too. The one major advantage they have over the olympus series is that direct projection onto an aps-c sensor is possible (with some modifications to the microscope heads) and the result is capturing the whole good FoV of your objectives on the camera, rathe...
by Element 56
Thu Oct 22, 2020 3:05 pm
Forum: Specimens, samples and slides
Topic: How to preserve crystallized chemicals on a slide.
Replies: 2
Views: 370

Re: How to preserve crystallized chemicals on a slide.

This is a good question and it's something I have experimented with, but had little success. I think most of my Victorian era mounts are dry mounts with some sort of spacer to raise the cover glass as Mr. EYE suggest. However, what keeps the crystals fixed in place long term is the question. In theo...
by Element 56
Thu Oct 22, 2020 2:38 pm
Forum: My microscope
Topic: The easiest microscope to tweak, modify
Replies: 24
Views: 304

Re: The easiest microscope to tweak, modify

One of the easiest instruments to build on to and that has a lot of readily available parts on eBay is the Olympus BH2. It's a great instrument with good to excellent optics depending on your budget. There's also a wealth of downloadable literature available for them online.
by Element 56
Wed Oct 21, 2020 3:16 pm
Forum: Specimens, samples and slides
Topic: How to prepare and preserve tardigrades on a slide
Replies: 14
Views: 636

Re: How to prepare and preserve tardigrades on a slide

Interesting. I think this is the full pdf downloadable... The chloral hydrate puts a stop on the Hoyer's formula here in the U.K. that's for sure - an alternative must be out-there though? Is any amount or any product containing any amount of chloral hydrate illegal? Can you order ready made Hoyer'...
by Element 56
Wed Oct 21, 2020 2:25 pm
Forum: Beginner's corner
Topic: 60x objective for swift sw380T
Replies: 12
Views: 489

Re: 60x objective for swift sw380T

All So learning my new scope I'm deathly afraid of using the 100x not wanting to mess with oil (irony of all things considering where I work lol). I understand you may not need the 100x now but down the road when or if you start getting into viewing other specimens you should learn to get get comfo...
by Element 56
Tue Oct 20, 2020 12:18 am
Forum: Microscopes and optics
Topic: Why are Russian optics so good?
Replies: 0
Views: 290

Why are Russian optics so good?

I was going through some of my bookmarks and came across this article. A lot of you probably already read it but for those who haven't it is an interesting read. Kirby http://www.novacon.com.br/lenses08.htm Edit, I just found this one too and for what it's worth I'm sharing. It's a bunch of old micr...
by Element 56
Mon Oct 19, 2020 2:48 am
Forum: Pictures and Videos
Topic: Pond water - Beginner afocal video
Replies: 17
Views: 920

Re: Pond water - Beginner afocal video

Nice clean videos.

I'll never understand the thumbs down responses on youtube. Your videos are sharp and clear and you captured some nice little pieces of footage. I guess there's a critic in every crowd. Probably some bumb who's never done anything more than click on a youtube video.
by Element 56
Mon Oct 19, 2020 12:59 am
Forum: Specimens, samples and slides
Topic: Safety and Legality of Prepared Pathology Slides
Replies: 9
Views: 431

Re: Safety and Legality of Prepared Pathology Slides

It's a very good idea to disinfect used scientific instruments especially if you don't know their history. However if you're going to go through the trouble you might as well use s disinfectant that will kill everything. Again this advice was shared with me by someone who knows much more than I. The...
by Element 56
Sun Oct 18, 2020 4:41 pm
Forum: Specimens, samples and slides
Topic: Safety and Legality of Prepared Pathology Slides
Replies: 9
Views: 431

Re: Safety and Legality of Prepared Pathology Slides

Sir wrote:
Sun Oct 18, 2020 6:30 am
Kirby, thank you for the valuable information!
You're welcome and thanks for saying thanks!

Kirby
by Element 56
Sat Oct 17, 2020 3:04 am
Forum: Specimens, samples and slides
Topic: Safety and Legality of Prepared Pathology Slides
Replies: 9
Views: 431

Re: Safety and Legality of Prepared Pathology Slides

I had the same question about some anthrax slides I found in an antique store years ago. I asked a friend who studied and worked with anthrax and other deadly bacteria and viruses his whole life. This was his reply, "I would not take chances with anthrax. If they were vegetative cells, chances are a...
by Element 56
Fri Oct 16, 2020 4:10 pm
Forum: Microscopy accessories
Topic: me again asking for cheap alternative: Objectives
Replies: 9
Views: 297

Re: me again asking for cheap alternative: Objectives

I can't knock China objective because I never use them but for the cost that you can pickup Nikon lenses on eBay that is where I would put my money. I picked up a brand new E plan for 30 USD a few weeks ago. I have bough Nikon plan objectives for less. Olympus "A" are fine for general use and can of...
by Element 56
Tue Oct 13, 2020 2:22 am
Forum: Pictures and Videos
Topic: Mold on cream Cheese
Replies: 2
Views: 89

Re: Mold on cream Cheese

Good eatin!
by Element 56
Mon Oct 12, 2020 12:17 am
Forum: Microscopes and optics
Topic: poor sharpness + contrast using 40X on self prepared slides
Replies: 5
Views: 271

Re: poor sharpness + contrast using 40X on self prepared slides

Just a quick thought I wonder how accurate the cheap cover glass size really is. Not sure how much a little size variation will hinder your image but it may be something you could check if you have a set of calipers. Certainly if you have too much mountent between the cover and specimen it could hav...
by Element 56
Sun Oct 11, 2020 6:22 pm
Forum: Camera systems and imaging
Topic: Suitable Camera Cards
Replies: 5
Views: 199

Re: Suitable Camera Cards

hans wrote:
Thu Oct 08, 2020 10:17 pm
You can also look at microSD cards which often come with an adapter so they can be used as full-sized SD. For example "SanDisk Extreme microSDHC UHS-I" which is class U3 and comes with adapter is currently $10.29 for 32GB or $13.99 for 64GB on Amazon.
Thank you, hans!

Kirby
by Element 56
Fri Oct 09, 2020 9:41 pm
Forum: For forum members who want to buy and sell equipment
Topic: Uncommonly Nice Auction in Two Days, 10/11 - 13
Replies: 12
Views: 623

Re: Uncommonly Nice Auction in Two Days, 10/11 - 13

If anyone plans on buying anything from this auction be sure to get a quote on shipping before bidding. I used to do a lot of these online auctions and the freight charges can be pretty extreme. I didn't read through this one but most of the auctioneers use third party shipping and they will give yo...
by Element 56
Thu Oct 08, 2020 8:34 pm
Forum: Microscopes and optics
Topic: Aligning Zeiss Standard trinocular head
Replies: 18
Views: 549

Re: Aligning Zeiss Standard trinocular head

Was there an incident that you are aware of that knocked it out? It sounds pretty bad which may indicate an easy or obvious fix. I am not familiar with this particular Zeiss head but very often the first thing to look at and adjust (once you've decided you have no other choice) is the eyepiece tubes...
by Element 56
Thu Oct 08, 2020 8:18 pm
Forum: Camera systems and imaging
Topic: Suitable Camera Cards
Replies: 5
Views: 199

Re: Suitable Camera Cards

I don't think a larger capacity card will make a difference, see article https://www.borrowlenses.com/blog/video-recording-limits-in-mirrorless-and-dslr-cameras/ Very informative thank you! If you want to compare number, according to the T7 specifications it will be writing video at 6 MB/s. The mos...
by Element 56
Thu Oct 08, 2020 6:09 pm
Forum: Camera systems and imaging
Topic: Suitable Camera Cards
Replies: 5
Views: 199

Suitable Camera Cards

I would like to start taking some videos through the microscope with my Canon T7 but right now I can only take very short clips. I have researched why and found that I need a "faster" SD card. I have never given these cards much thought until I ran into this problem and I don't want to buy the wrong...
by Element 56
Wed Oct 07, 2020 11:41 pm
Forum: Microscopes and optics
Topic: Help disassembling a Zeiss objective
Replies: 13
Views: 316

Re: Help disassembling a Zeiss objective

Yup the lens was probably gone and you dissolved what took it's place. . That is quite interesting how bad it got. I guess my filter cubes would eventually suffer the same fate had I not cleaned them. Funny how this type of reaction occurs over time.

Kirby
by Element 56
Wed Oct 07, 2020 8:56 pm
Forum: Microscopes and optics
Topic: Help disassembling a Zeiss objective
Replies: 13
Views: 316

Re: Help disassembling a Zeiss objective

I went back and looked at my conversation again. It was with Omega Optics. They actually recommended using vinegar as a solvent to clean it but I now recall I used ammonia which worked better. I think I tried other acids as well. Might be worth trying.
Kirby
by Element 56
Wed Oct 07, 2020 11:54 am
Forum: Microscopes and optics
Topic: Help disassembling a Zeiss objective
Replies: 13
Views: 316

Re: Help disassembling a Zeiss objective

Glad you got it apart. I think that white crust is the same that you see on fluorescent filter cube filters. I asked a manufacturer what it was and what can be done and they said it has to do with the coating on the lens reacting with the metal the filter is mounted in. So I guess that is two dissim...
by Element 56
Wed Oct 07, 2020 2:57 am
Forum: Microscopes and optics
Topic: Help disassembling a Zeiss objective
Replies: 13
Views: 316

Re: Help disassembling a Zeiss objective

[/quote] says the guy that put a lens into a hydraulic press! I did notice some spalling on the inside of the top surface of the front assembly which may have already been there or maybe I caused when tapping it with the mallet-- the heat source is a 15w bulb and doesn't get much above 130 F but ala...
by Element 56
Tue Oct 06, 2020 11:09 pm
Forum: Microscopes and optics
Topic: Help disassembling a Zeiss objective
Replies: 13
Views: 316

Re: Help disassembling a Zeiss objective

There are four indentations filled with paste but I think those are for some concentricity jig at the factory. A q tip won't help. I checked the assembly using the sz7 coaxial illuminator I just fixed. The problem is definitely between two surfaces Those four little holes and the small amount of wh...
by Element 56
Thu Oct 01, 2020 8:41 pm
Forum: Microscopes and optics
Topic: Help Fixing Microscope Head?
Replies: 7
Views: 585

Re: Help Fixing Microscope Head?

What exactly are you working on? Brand serial number etc...
by Element 56
Tue Sep 29, 2020 8:26 pm
Forum: Pictures and Videos
Topic: New Scope
Replies: 7
Views: 334

Re: New Scope

Looks good. You will only be able to get a portion of the wing in focus at a time as its depth of field is smaller than the relief of the subject That's probably the problem. If you're trying to focus on an unmounted specimen that is not absolutely flat you're going to have to search around a littl...
by Element 56
Tue Sep 29, 2020 6:25 pm
Forum: Pictures and Videos
Topic: New Scope
Replies: 7
Views: 334

Re: New Scope

So you focus on your specimen with the 4x, then turn the nose piece to next lens 10x and adjust the fine focus knob to make the image sharp. Is this how you're doing it? Please explain your process and we can better help you figure out what is going on. I sort of think you may be turning the course ...
by Element 56
Tue Sep 29, 2020 6:18 pm
Forum: My microscope
Topic: Cleaning mirrors in objectives of AO 570 stereoscope
Replies: 17
Views: 525

Re: Cleaning mirrors in objectives of AO 570 stereoscope

I'm glade you got everything worked out. Enjoy it!
Kirby