Search found 1829 matches

by Crater Eddie
Wed Dec 10, 2014 1:57 pm
Forum: Home-made microscope adaptations
Topic: New project: LED conversion for LOMO Biolam
Replies: 82
Views: 35202

Re: New project: LED conversion for LOMO Biolam

My project is progressing slowly. My LED driver boards arrived a few days ago directly from China. Considering it came from Hong Kong I thought my package got here reasonably quickly. Of course there was no documentation whatsoever, but as they are the same boards used in the tutorial on the old for...
by Crater Eddie
Sun Dec 07, 2014 3:13 am
Forum: Pictures and Videos
Topic: Rerun-- old Haematococcus images
Replies: 8
Views: 2255

Re: Rerun-- old Haematococcus images

I had to replace my computer which was getting more and more erratic, and I fell for one of Windows' nasty tricks-- it swapped the names of my external drives, and I stupidly formatted the wrong one that had many of my images on it, so I was spending time trying to recover what I could :( Thank you...
by Crater Eddie
Fri Dec 05, 2014 10:49 pm
Forum: Pictures and Videos
Topic: Arcellas (I think) and Vorticella
Replies: 7
Views: 1980

Re: Arcellas (I think) and Vorticella

Very nice images. Gotta love vorticella.
by Crater Eddie
Fri Dec 05, 2014 10:27 pm
Forum: Pictures and Videos
Topic: Rerun-- old Haematococcus images
Replies: 8
Views: 2255

Re: Rerun-- old Haematococcus images

Thanks for re-posting these. I have found a few of these colorful fellows in the cultures that I have re-constituted from my dried-up birdbath. My photos are pretty poor however.
by Crater Eddie
Fri Dec 05, 2014 2:34 am
Forum: My microscope
Topic: Amscope
Replies: 5
Views: 4037

Re: Amscope

I have an Amscope stereo microscope (on boom stand mount) at work that I use for quality control inspections on circuit boards and other tiny parts. I am perfectly satisfied with it's quality and optics. The camera that came with it however, is mediocre at best.
by Crater Eddie
Wed Dec 03, 2014 4:41 pm
Forum: Camera systems and imaging
Topic: CHDK
Replies: 5
Views: 2500

Re: CHDK

I tried it on my Canon camera a few years ago and noticed the slow-down.
I also noticed a significant shortening of battery life.
It wasn't worth the problems to me.
by Crater Eddie
Wed Dec 03, 2014 2:05 pm
Forum: Microscopes and optics
Topic: Dark Field for Higher Magnifications
Replies: 11
Views: 3576

Re: Dark Field for Higher Magnifications

I have been following this thread with interest. I went to Staple's office supply to get a packet of laser printer transparency acetate last weekend... $69 for a packet of 50 sheets. Yikes! I tried a sheet of regular clear sheets and it just smudged.
by Crater Eddie
Wed Dec 03, 2014 1:57 pm
Forum: Resources (online, books etc.)
Topic: Guide to making Rheinberg filters and dark field stops
Replies: 2
Views: 1641

Re: Guide to making Rheinberg filters and dark field stops

Thanks for the link! I had seen this before but lost it. Very good information.
by Crater Eddie
Mon Dec 01, 2014 1:37 am
Forum: Pictures and Videos
Topic: My Blood Cells Red & White
Replies: 1
Views: 1091

Re: My Blood Cells Red & White

I don't see any white cells. Are you refering to the spiky looking cell in the bottom pic? That's a crenated red cell, you can see a drawing and short explanation of such cells here: http://en.wikipedia.org/wiki/Crenation In this case, the crenation and the stacking of the red cells, known as Roulea...
by Crater Eddie
Wed Nov 26, 2014 8:12 pm
Forum: For forum members who want to buy and sell equipment
Topic: Surplus lab stuff supplier
Replies: 0
Views: 2503

Surplus lab stuff supplier

Here is a handy (US) supplier of many types of surplus lab items including slides, cover slips, immersion oil, pipettes, culture tubes, etc: http://www.sciplus.com/s/c_11 They even have a few low-end microscopes. I have no interest in this company, other than trying to keep them in business so I can...
by Crater Eddie
Mon Nov 24, 2014 4:55 pm
Forum: My microscope
Topic: Nikon Optiphot
Replies: 9
Views: 5011

Re: Nikon Optiphot

I do not see the image of your microscope.
by Crater Eddie
Mon Nov 24, 2014 4:40 pm
Forum: Microscopes and optics
Topic: Thinking about a new objective or two
Replies: 10
Views: 3763

Re: Thinking about a new objective or two

I was planning on using the 60x mainly as a "high dry" for observing stained blood cells, I rarely go higher than 40x on pond life (maybe I would with better glass!) but I take your points. Thanks for your information re the parfocality distance. I thought that as long as the objectives were designe...
by Crater Eddie
Mon Nov 24, 2014 4:47 am
Forum: Microscopes and optics
Topic: Thinking about a new objective or two
Replies: 10
Views: 3763

Re: Thinking about a new objective or two

Gekko, you make some good points. The objectives that came with the Biolam are acromats, I would certainly be interested in upgrading to one or more apochromats if it is likely to make a significant improvement in image quality. The stock acromats have a parfocal distance of 33mm. If the apos are pa...
by Crater Eddie
Mon Nov 24, 2014 1:59 am
Forum: Microscopes and optics
Topic: Thinking about a new objective or two
Replies: 10
Views: 3763

Re: Thinking about a new objective or two

JimT: Yes, that is my thought. Since I don't use the 100x oil, the 60x dry would be a nice compliment to the 40x, especially when observing blood cells. Gekko: The turret is mounted with a regular screw not a thumbscrew, so is not really meant to be changed. If I could find a 5 position one that wou...
by Crater Eddie
Mon Nov 24, 2014 12:46 am
Forum: Microscopes and optics
Topic: Thinking about a new objective or two
Replies: 10
Views: 3763

Re: Thinking about a new objective or two

75RR: I do take your points, I just almost never find myself using the 4x. Gekko: Yes, unfortunately the turret is only 4 position. It looks like it comes off with one screw, though I have never had mine off. I see them on Ebay occasionally. Would love to replace it with a 5 position turret, but I d...
by Crater Eddie
Sun Nov 23, 2014 11:35 pm
Forum: Microscopes and optics
Topic: Thinking about a new objective or two
Replies: 10
Views: 3763

Thinking about a new objective or two

In setting up my micro work area again for the winter, I am reminded that when I packed everything away I was considering changing my lineup of objectives for my LOMO Biolam microscope. I rarely use the 100x objective anymore, was thinking about replacing it with a 60x. I also rarely use the 4x, hav...
by Crater Eddie
Sat Nov 22, 2014 1:21 pm
Forum: My microscope
Topic: Zeiss Photomicroscope 2
Replies: 4
Views: 3482

Re: Zeiss Photomicroscope 2

This instrument is a work of art in and of itself.
by Crater Eddie
Thu Nov 20, 2014 1:55 pm
Forum: Identification help
Topic: Rotifer key
Replies: 12
Views: 4044

Re: Rotifer key

I, for one, think your sketches are very good. Enough detail to be useful for comparison, not so much detail as to bog one down. I would use this.
by Crater Eddie
Thu Nov 20, 2014 1:46 pm
Forum: Pictures and Videos
Topic: Moss and Closterium sp.
Replies: 6
Views: 1762

Re: Moss and Closterium sp.

Very beautiful images.
by Crater Eddie
Thu Nov 20, 2014 1:45 pm
Forum: Pictures and Videos
Topic: To be relative or not to be. That is the question.
Replies: 5
Views: 1708

Re: To be relative or not to be. That is the question.

Dang! Looks pretty good to me.
by Crater Eddie
Wed Nov 19, 2014 12:45 am
Forum: Home-made microscope adaptations
Topic: New project: LED conversion for LOMO Biolam
Replies: 82
Views: 35202

Re: New project: LED conversion for LOMO Biolam

That would be great Tony, please do!
I would like to see your solution.
by Crater Eddie
Tue Nov 18, 2014 10:03 pm
Forum: Home-made microscope adaptations
Topic: New project: LED conversion for LOMO Biolam
Replies: 82
Views: 35202

New project: LED conversion for LOMO Biolam

I need a new project to work on, so have decided to experiment with an LED retrofit for my LOMO Biolam. There is some excellent information about LED projects on the "old forum", as well as the archives of Micscape, I'll be using those as a starting point. I took the plunge today and ordered some 3 ...
by Crater Eddie
Fri Nov 14, 2014 7:37 pm
Forum: Beginner's corner
Topic: Some questions regarding special features
Replies: 17
Views: 5697

Re: Some questions regarding special features

Thanks to all for the comments, gives me things to think about.
My apologies to Joe for hijacking the thread.
by Crater Eddie
Fri Nov 14, 2014 4:19 pm
Forum: Beginner's corner
Topic: Some questions regarding special features
Replies: 17
Views: 5697

Re: Some questions regarding special features

Thanks, yes I saw that measurement. I did look at the photos before I posted earlier, they look similar. What I meant was that I need to measure the corresponding area on my own scope to see if it is close enough for it to fit. It would be worth a little tool work if this could be made to fit and wo...
by Crater Eddie
Fri Nov 14, 2014 2:56 pm
Forum: Beginner's corner
Topic: Some questions regarding special features
Replies: 17
Views: 5697

Re: Some questions regarding special features

So, would it really be as simple as just adding the above referenced iris assembly to one's light source to convert to Kohler illumination? (Assuming of course that one has a centerable lamp and the iris assembly would fit) Too bad they don't provide a link to the installation instructions. I wonder...
by Crater Eddie
Thu Nov 13, 2014 2:04 pm
Forum: Introduce yourself
Topic: Hello (again) from Illinois!
Replies: 4
Views: 2399

Re: Hello (again) from Illinois!

Thank you Gekko! It is good to see you here too.
by Crater Eddie
Wed Nov 12, 2014 7:25 pm
Forum: Introduce yourself
Topic: Hello (again) from Illinois!
Replies: 4
Views: 2399

Re: Hello (again) from Illinois!

Hi Tony, good to see you here! Yes, I have been absorbed in summertime chores and multiple "honeydo" projects, we even put up a small home observatory for our telescope. That is still a work in progress by the way. On clear nights we hope to be spending time out under the stars... at least until it ...
by Crater Eddie
Wed Nov 12, 2014 4:44 pm
Forum: Introduce yourself
Topic: Hello (again) from Illinois!
Replies: 4
Views: 2399

Hello (again) from Illinois!

Hello to everyone! I was on the old forum a few years ago and drifted away as other interests took my free time. Now I am back as the approaching winter has once again driven me indoors.
I hope to see my old friends here, and perhaps make some new ones.
CE