Search found 85 matches

by DrPhoxinus
Tue Oct 06, 2020 9:56 am
Forum: My microscope
Topic: My microscope (overkill eyepiece alert!)
Replies: 21
Views: 862

Re: My microscope (overkill eyepiece alert!)

Here is an interesting discussion of using microscope eyepieces on telescopes and why the vice versa isn’t good

https://www.cloudynights.com/topic/6051 ... elescopes/

Gerard
by DrPhoxinus
Sat Aug 22, 2020 4:14 pm
Forum: Microscopy accessories
Topic: A LED flashlight worth consideration
Replies: 13
Views: 2473

Re: A LED flashlight worth consideration

Don, Your lightning gizmo seems interesting. I think I got something like yours as a free gift when I bought some heavy duty (10000 and 28000 maH) power banks. 28000 maH is about 33 watt hours of power, and my Dell notebook battery is 40 Watt hours so that is a lot of power to run a microscope LED l...
by DrPhoxinus
Sat Aug 22, 2020 5:12 am
Forum: Microscopes and optics
Topic: zeiss eyepiece delamination fixed with immersion oil
Replies: 15
Views: 5073

Re: zeiss eyepiece delamination fixed with immersion oil

Did anyone have success using immersion oil for eyepiece de lamination?

Mine still look good.

Gerard
by DrPhoxinus
Sat Aug 22, 2020 5:06 am
Forum: Microscopy accessories
Topic: A LED flashlight worth consideration
Replies: 13
Views: 2473

Re: A LED flashlight worth consideration

This is a follow up.

Did anyone find them useful?

Gerard
by DrPhoxinus
Thu Aug 20, 2020 6:24 pm
Forum: Pictures and Videos
Topic: Images from my grass culture
Replies: 5
Views: 437

Re: Images from my grass culture

Perhaps setup a culture that has just aged water and a little yogurt or yeast, then add some water containing the protists. That way oxygen would be more controlled
by DrPhoxinus
Thu Aug 20, 2020 9:47 am
Forum: Pictures and Videos
Topic: Images from my grass culture
Replies: 5
Views: 437

Re: Images from my grass culture

You might try subculturing since you already have protists.
The question is whether the oxygen is too low because of all the bacterial growth or is it running out of gas.
by DrPhoxinus
Thu Aug 20, 2020 9:38 am
Forum: Pictures and Videos
Topic: Images from my grass culture
Replies: 5
Views: 437

Re: Images from my grass culture

Don,

I am glad to see the new dry grass is working out.
Some people supplement their grass with a little yeast.
Maybe a dilute drop of live yogurt to increase the organic
materials

Gerard
by DrPhoxinus
Wed Aug 12, 2020 12:25 pm
Forum: Pictures and Videos
Topic: Stentor multiformes
Replies: 6
Views: 981

Re: Stentor multiformes

I think Stentors were the inspiration for the Star Trek episode The Doomsday Machine
Season 2 Episode 6
by DrPhoxinus
Sun Aug 09, 2020 6:23 pm
Forum: Microscopes and optics
Topic: Help with disassembly and repair of zeiss phase condenser
Replies: 21
Views: 2059

Re: Help with disassembly and repair of zeiss phase condenser

I would like to take a moment and express my gratitude to those who have helped me. Microbob posted a link to a German pdf and I found a German to English translator on the web. I have been able to clean out to the green oil. When I bought that condenser I knew it was damaged and rather depauperate ...
by DrPhoxinus
Fri Aug 07, 2020 4:20 pm
Forum: Microscopes and optics
Topic: Fine Focus Slips
Replies: 2
Views: 698

Re: Fine Focus Slips

by DrPhoxinus
Thu Aug 06, 2020 1:48 pm
Forum: Microscopes and optics
Topic: Help with disassembly and repair of zeiss phase condenser
Replies: 21
Views: 2059

Re: Help with disassembly and repair of zeiss phase condenser

Charles,

As always thanks.

The most recent one only has three ports filled

The Ph3 is partly lifted off probably do to oil soaking through and the D port is just clear glass.

I will try the electrical tape soon.

May I ask you how many scopes do you own?

Gerard
by DrPhoxinus
Wed Aug 05, 2020 11:00 pm
Forum: For forum members who want to buy and sell equipment
Topic: WTB ready-to-use ~$400 used microscope from forum member
Replies: 20
Views: 2068

Re: WTB ready-to-use ~$400 used microscope from forum member

First, AO made a lot of 10s, so parts are easy to get. My 410 seems harder to adjust, I don’t seem to have as much illumination control as the 10, and focusing isn’t as smooth. Mine was used at a university so it maybe wear and tear. The optics are fine. It just isn’t my first or second choice, but ...
by DrPhoxinus
Wed Aug 05, 2020 3:36 pm
Forum: Microscopes and optics
Topic: Help with disassembly and repair of zeiss phase condenser
Replies: 21
Views: 2059

Re: Help with disassembly and repair of zeiss phase condenser

Thanks Charles,

It is interesting that in the Leitz 402aa condenser one can pop the annuli in and out.

The Ph3 annulus is damaged. Can I just put black paint on the clear part of the glass?

I wonder if anyone has inserted an annulus without the threaded collar

Gerard
by DrPhoxinus
Wed Aug 05, 2020 3:32 pm
Forum: For forum members who want to buy and sell equipment
Topic: WTB ready-to-use ~$400 used microscope from forum member
Replies: 20
Views: 2068

Re: WTB ready-to-use ~$400 used microscope from forum member

Zuul, I agree with you. I have 2 series 10, one brightfield and one phase, and a 410 with series 10 trinocular head, and the series 10 is a great scope. I also have a AO 150 which is good for a quick look. I find the 410 a little finicky. Series 10 scopes vary widely in condition. I am amazed as to ...
by DrPhoxinus
Tue Aug 04, 2020 8:15 pm
Forum: Microscopes and optics
Topic: Help with disassembly and repair of zeiss phase condenser
Replies: 21
Views: 2059

Re: Help with disassembly and repair of zeiss phase condenser

Wow, I really appreciate those data. In the condenser I just bought all the ports are the same size. From what you told me about the 14 mm D stop, one of those ebay phase rings could be overlayed on the delaminated D stop which is just clear glass now. I think the ports in my Leitz 402aa might be 19...
by DrPhoxinus
Tue Aug 04, 2020 6:57 pm
Forum: Microscopes and optics
Topic: Help with disassembly and repair of zeiss phase condenser
Replies: 21
Views: 2059

Re: Help with disassembly and repair of zeiss phase condenser

Thanks

What are the diameters of the D stop glass, and empty port

Best Wishes

Gerard
by DrPhoxinus
Tue Aug 04, 2020 5:15 pm
Forum: Microscopes and optics
Topic: Help with disassembly and repair of zeiss phase condenser
Replies: 21
Views: 2059

Re: Help with disassembly and repair of zeiss phase condenser

Indeed Apochronaut is right again. I was able to loosen the underside ring of the condenser lens and lift off the bottom lens and was able to wipe out the green oil. now if I can get help with the annuli and what to do with the empty slots. Has anyone put these type of phase rings in any condenser? ...
by DrPhoxinus
Sat Aug 01, 2020 7:10 pm
Forum: Pictures and Videos
Topic: Pollen of a Weed Flower
Replies: 2
Views: 305

Re: Pollen of a Weed Flower

Don, Speaking of pollen, one thing I did in the dead of winter was to look at Amaryllis pollen as they are popular during the holidays. It is fun to get the pollen tubes to grow https://www.saps.org.uk/secondary/teaching-resources/222-student-sheet-4-pollen-tube-growth here is a jpg from the above a...
by DrPhoxinus
Thu Jul 30, 2020 9:13 pm
Forum: Microscopes and optics
Topic: Help with disassembly and repair of zeiss phase condenser
Replies: 21
Views: 2059

Re: Help with disassembly and repair of zeiss phase condenser

But mine looks just like the photo with the same green tint and shape
by DrPhoxinus
Thu Jul 30, 2020 8:36 pm
Forum: Microscopes and optics
Topic: Help with disassembly and repair of zeiss phase condenser
Replies: 21
Views: 2059

Re: Help with disassembly and repair of zeiss phase condenser

Mine looks like that. So is that green oil?

Gerard
by DrPhoxinus
Thu Jul 30, 2020 7:36 pm
Forum: Microscopes and optics
Topic: Help with disassembly and repair of zeiss phase condenser
Replies: 21
Views: 2059

Help with disassembly and repair of zeiss phase condenser

My phase condenser on my old zeiss hadn't been used in over decade so the grease hardened. the ball bearing is off the spring because it does not rotate with a click, I tried to disassemby it but could not be the cover off with just the top screw. I bought another on ebay that is in better physical ...
by DrPhoxinus
Mon Jul 27, 2020 1:56 pm
Forum: Sandbox
Topic: Darkfield and Reinberg filters
Replies: 9
Views: 856

Re: Darkfield and Reinberg filters

They can be found on eBay

However I just check and for a number of sellers the 32 mm size is out of stock


Gerard
by DrPhoxinus
Sun Jul 26, 2020 2:38 pm
Forum: Pictures and Videos
Topic: The Bodies of Tiny Flowers: You Tube Video
Replies: 4
Views: 588

Re: The Bodies of Tiny Flowers: You Tube Video

Don, A to the paucity of microbes and things to look at I offer some suggestions. Yogurt. If haven't done so yet, take a drop of live yogurt and dilute it. When I did this I was overwhelmed by the sheer number of moving bacteria. It brings home that we are 1 trillion human cells but 10 trillion prok...
by DrPhoxinus
Sun Jul 19, 2020 12:23 pm
Forum: Beginner's corner
Topic: DIN vs RMS
Replies: 16
Views: 1533

Re: DIN vs RMS

I bought a 185 objective by mistake once and had to buy an adapter to make it parfocal with the rest of the objectives on the turret. It was physically shorter
by DrPhoxinus
Sat Jul 18, 2020 10:30 pm
Forum: Beginner's corner
Topic: DIN vs RMS
Replies: 16
Views: 1533

Re: DIN vs RMS

More like 185 vs 195
by DrPhoxinus
Thu Jul 16, 2020 3:04 pm
Forum: Pictures and Videos
Topic: Ruined Water Sample
Replies: 8
Views: 717

Re: Ruined Water Sample

Don, If you can't grow them you can buy them on ebay Paramecia https://www.ebay.com/itm/Infusoria-Paramecium-culture-live-food-for-baby-fish-fry-feed-betta-guppy-shrimp/202866759436?hash=item2f3bcd170c:g:HLoAAOSw6MBe7l89 https://www.ebay.com/itm/Infusoria-starter-culture-live-food-Corydoras-bettas-m...
by DrPhoxinus
Thu Jul 09, 2020 1:34 pm
Forum: Specimens, samples and slides
Topic: Where Can I Find Ciliates without Any Creeks or Ponds?
Replies: 10
Views: 928

Re: Where Can I Find Ciliates without Any Creeks or Ponds?

In my experience it is important to set up a series of culture jars with varying amounts of dried grass etc.
Too much grass gives an anaerobic environment not good for ciliates

I have used damp soil from a houseplant and gotten some nice Colpoda.

Gerard
by DrPhoxinus
Fri Jul 03, 2020 6:06 pm
Forum: Introduce yourself
Topic: Introduction
Replies: 6
Views: 1641

Re: Introduction

So where are you with the scopes?

What do you think of the 150?

I had a Reichert 150 and it was university surplus.
It only had achromatic objectives.

I bought an older AO 150 and with plan achros it is easy for a kid to use and take pictures.

Gerard
by DrPhoxinus
Fri Jul 03, 2020 5:58 pm
Forum: Introduce yourself
Topic: Hello!
Replies: 1
Views: 693

Re: Hello!

Welcome to the forum.

If you haven’t already done so, get yourself some concave slides and google hay infusion.

You will get a great group of microbes in under two weeks.

My favorite objective power is 20x.

I wish more scopes came with them

Gerard