Search found 23 matches

by Alex H
Fri Aug 11, 2017 7:39 am
Forum: Microscopes and optics
Topic: Question to owners of Laborlux-D from 1967
Replies: 1
Views: 2103

Question to owners of Laborlux-D from 1967

Hi everyone! I need help from the owners of old black Leitz Laborlux-D microscope from 1967, the one that has a slot for filter slides above the revolver. Here is a link to Google saved image of the microscope from an old eBay ad: http://i.ebayimg.com/00/s/MzQ5WDUwMA==/z/t5wAAOxygPtSsR9Z/$_3.JPG?set...
by Alex H
Thu Feb 18, 2016 9:49 am
Forum: Microscopes and optics
Topic: image quality loss due to cover-slip thickness deviation
Replies: 74
Views: 23943

Re: image quality loss due to cover-slip thickness deviation

For the best obtainable quality one just needs objectives that can be adjusted for the variability of the cover-slip thickness. I only do not know if all microscope manufacturers have them on offer. Leitz, Zeiss, Nikon and Olympus offer such objectives since about 50 years ago. A very healthy bank-...
by Alex H
Wed Feb 17, 2016 5:55 pm
Forum: Microscopes and optics
Topic: image quality loss due to cover-slip thickness deviation
Replies: 74
Views: 23943

Re: image quality loss due to cover-slip thickness deviation

For the best obtainable quality one just needs objectives that can be adjusted for the variability of the cover-slip thickness. I only do not know if all microscope manufacturers have them on offer. Leitz, Zeiss, Nikon and Olympus offer such objectives since about 50 years ago.
by Alex H
Thu Jan 28, 2016 9:20 am
Forum: Beginner's corner
Topic: Spectroscopy with Micro?
Replies: 7
Views: 4487

Re: Spectroscopy with Micro?

Have you posted your star spectra images anywhere – I would like to see. What did you use for that?
by Alex H
Sat Jan 09, 2016 8:44 am
Forum: Beginner's corner
Topic: water bears and moss?
Replies: 4
Views: 3501

Re: water bears and moss?

I wind water bears regularly in dry moss when collecting for nematodes (my research object).

If you can, look for mosses on rocks, or rooftops of old houses.
by Alex H
Tue Dec 01, 2015 8:25 am
Forum: Camera systems and imaging
Topic: Is there a decent photoshop replacement?
Replies: 19
Views: 8705

Re: Is there a decent photoshop replacement?

To add to my previous post: ImageJ has a number of plug-ins that do stacking, but I have not tried an of them (I use Zerene and Combine ZP regularly).
by Alex H
Tue Dec 01, 2015 8:23 am
Forum: Camera systems and imaging
Topic: Is there a decent photoshop replacement?
Replies: 19
Views: 8705

Re: Is there a decent photoshop replacement?

Combine ZP - free for Windows
Zerene Stacker - not free, multiplatform
Helicon Focus - not free, multiplatform
by Alex H
Wed Nov 25, 2015 7:26 am
Forum: Pictures and Videos
Topic: Stenostomum bicaudatum flatworm video and literature
Replies: 9
Views: 3783

Re: Nematode video

This is not a nematode.
by Alex H
Sun Nov 22, 2015 4:14 pm
Forum: For forum members who want to buy and sell equipment
Topic: Early Leitz Laborlux II stand with eyepieces and condenser
Replies: 5
Views: 4134

Re: Early Leitz Laborlux II stand with eyepieces and condenser

So, I guess I will just keep it. I will put my phase contrast setup on it. Instead of having to switch nosepiece/condenser on one microscope, I'll just have two microscopes instead. I wish I had more space.
by Alex H
Thu Nov 19, 2015 8:09 am
Forum: Microscopes and optics
Topic: prices of older scopes
Replies: 7
Views: 4172

Re: prices of older scopes

Depends what you mean by outdated... Optics definitely had seen much improvement over past 50-70 years but how much...

My Ortholux with ICT (DIC) optics from the 60th performs almost as good as my modern Nikon.
by Alex H
Thu Nov 12, 2015 7:12 am
Forum: For forum members who want to buy and sell equipment
Topic: Early Leitz Laborlux II stand with eyepieces and condenser
Replies: 5
Views: 4134

Re: Early Leitz Laborlux II stand with eyepieces and condenser

It is indeed a very elegant microscope. And a lot smaller than Ortholux. Since it takes the same accessories as Ortholux, I would have kept it instead, but I am so used to the low position of focusing mechanism that Ortholux has. Similar to my Nikon Eclipse at work. I think this Laborlux II was spec...
by Alex H
Wed Nov 11, 2015 6:55 pm
Forum: For forum members who want to buy and sell equipment
Topic: Early Leitz Laborlux II stand with eyepieces and condenser
Replies: 5
Views: 4134

Early Leitz Laborlux II stand with eyepieces and condenser

In addition to my Ortholux stand that I am using and keeping, I have a spare early Laborlux (sometimes designated as "Laborlux II") that needs a new home. First of all some sellers background - I have not posted much on this forum yet, but here is my page on eBay: http://www.ebay.com/usr/sh00rik Pic...
by Alex H
Tue Nov 03, 2015 6:56 pm
Forum: Miscellaneous
Topic: Glycerin in the message system?
Replies: 3
Views: 2824

Re: Glycerin in the message system?

If it is the same system as in some other forums, the PM will sit in the outbox until the recipient opens it within the forum environment.
by Alex H
Mon Oct 26, 2015 4:56 pm
Forum: Camera systems and imaging
Topic: SONY ALPHA A7R
Replies: 11
Views: 7345

Re: SONY ALPHA A7R

A7rII is supposed to have electronic first curtain shutter.

I have one of the LM-Scope adapters that I use at work. Note that they have two different versions, one for APS-C sensors, and one for full-frame. Quality-vise they are good.
by Alex H
Sun Oct 18, 2015 5:42 pm
Forum: Microscopy accessories
Topic: Identification help - Leitz accessory
Replies: 4
Views: 4523

Re: Identification help - Leitz accessory

The edge is very sharp, hence I assumed it was a blade. I do not exclude the fact that it might have housed the prism of some kind and was part of a bigger device, Unfortunately, in the bin of random bits and pieces that this item was found, there was nothing that it can connect to. Thank you for yo...
by Alex H
Sat Oct 17, 2015 5:50 am
Forum: Microscopy accessories
Topic: Identification help - Leitz accessory
Replies: 4
Views: 4523

Re: Identification help - Leitz accessory

This is a Pule, or " Donkey's Pet" cheese slicer. For the 600.00/lb. rare cheese, made from smoked Donkey's milk at the Zasavica Special Nature Reserve about 60km. west of Belgrade, a finer grade of cheese slicer is required. The focusing eyepiece allows the user to get a degree of accuracy previou...
by Alex H
Fri Oct 16, 2015 1:06 pm
Forum: Microscopy accessories
Topic: Identification help - Leitz accessory
Replies: 4
Views: 4523

Identification help - Leitz accessory

Among a number of ordinary and uninteresting objectives and eyepieces that I have, there are few, which purpose or identification are not clear to me. This is the first of them: DSC02146.JPG DSC02148.JPG DSC02149.JPG DSC02151.JPG It consists of somewhat unusual eyepiece fitted into a tube with what ...
by Alex H
Sun Oct 11, 2015 5:10 pm
Forum: Introduce yourself
Topic: New member, Stockholm, Swedish Museum of Natural History
Replies: 12
Views: 6521

Re: New member, Stockholm, Swedish Museum of Natural History

gekko wrote:Welcome Oleksandr! Great that you joined the forum. Although not a microscope collector, I too would like to see pictures of the microscopes in your collection.
I am not a collector either. May be I can show some pictures of my favorite organisms instead?
by Alex H
Sat Oct 10, 2015 7:18 pm
Forum: Introduce yourself
Topic: New member, Stockholm, Swedish Museum of Natural History
Replies: 12
Views: 6521

Re: New member, Stockholm, Swedish Museum of Natural History

Thank you, Oliver. That is what I thought and I completely agree with such strategy.

I posted about my current PM restrictions in hope that the member who sent me PM will see it and will wait for my reply without getting upset.
by Alex H
Sat Oct 10, 2015 1:32 pm
Forum: Introduce yourself
Topic: New member, Stockholm, Swedish Museum of Natural History
Replies: 12
Views: 6521

Re: New member, Stockholm, Swedish Museum of Natural History

Sorry to sound stupid, but I can not find anywhere on the forum information about private messaging. I received a message from a member that I want to reply to, but I can not. I get this reply: " We are sorry, but you are not authorised to use this feature. You may have just registered here and may ...
by Alex H
Fri Oct 09, 2015 8:20 pm
Forum: Introduce yourself
Topic: New member, Stockholm, Swedish Museum of Natural History
Replies: 12
Views: 6521

Re: New member, Stockholm, Swedish Museum of Natural History

Thanks to everyone for kind welcome!

Charles, I will PM you when I have a list of what I have but please do not hope for any rarities.
by Alex H
Fri Oct 09, 2015 11:45 am
Forum: Introduce yourself
Topic: New member, Stockholm, Swedish Museum of Natural History
Replies: 12
Views: 6521

New member, Stockholm, Swedish Museum of Natural History

Hello everybody, My name is Oleksandr and I currently work at the Swedish Museum of Natural History. Microscopy was an important part of my job for past 20 years, although my first microscope I received even earlier. Recently I also became interested in the vintage microscopy equipment and non-scien...