Search found 65 matches

by Glot
Tue Apr 28, 2020 7:44 am
Forum: Miscellaneous
Topic: Lamps
Replies: 1
Views: 740

Lamps

Does anyone know if there is anything special about a 6v or 12v G4 Halogen lamp for a microscope compared to a standard one?
by Glot
Sun Apr 19, 2020 9:15 am
Forum: Microscopes and optics
Topic: Highest power LED suitable for microscope?
Replies: 15
Views: 1265

Re: Highest power LED suitable for microscope?

Something along these lines may be whst you are after.

https://www.lumileds.com/products/high-power-leds
by Glot
Sun Apr 19, 2020 9:15 am
Forum: Beginner's corner
Topic: What to buy. Advice
Replies: 3
Views: 548

Re: What to buy. Advice

I was trying to explain in an uncomplicated way from one beginner to other beginners.
by Glot
Sun Apr 19, 2020 7:52 am
Forum: Beginner's corner
Topic: What to buy. Advice
Replies: 3
Views: 548

What to buy. Advice

I am new and I know nothing. I have a zoomable stereo and a Leitz compound. The stereo is great fun, easy to use. It apparently goes from 7 to 45 mag. The focus is too coarse at higher mag but manageable. Maybe one day I can modify it. The advantages are a huge working distance and at lower mag, ver...
by Glot
Sat Apr 18, 2020 10:26 pm
Forum: Microscopes and optics
Topic: Working distance
Replies: 4
Views: 532

Re: Working distance

I guess that's a fluke and not a rule.
by Glot
Sat Apr 18, 2020 10:25 pm
Forum: Miscellaneous
Topic: Slides
Replies: 5
Views: 964

Re: Slides

Standard slides are easy but I use them for petrology thin sections and they are fragile. I have some 2mm glass which also allows me to cut custom sizes. I like 30 x 75. Now you mention the condenser, I will experiment
by Glot
Sat Apr 18, 2020 9:10 am
Forum: Microscopes and optics
Topic: Highest power LED suitable for microscope?
Replies: 15
Views: 1265

Re: Highest power LED suitable for microscope?

There are basically two types of LED arrays. Constant voltage and constant current. I get the feeling you are trying to compare LED to incandescent directly. They are two different types of light source. Bit like comparing fluroescent to incandescent.
by Glot
Sat Apr 18, 2020 7:55 am
Forum: Miscellaneous
Topic: Slides
Replies: 5
Views: 964

Slides

General question. Why are slides so thin? Can i use thicker glass?
by Glot
Sat Apr 18, 2020 7:53 am
Forum: Miscellaneous
Topic: What is your favorite microscopy YouTube channel?
Replies: 10
Views: 4020

Re: What is your favorite microscopy YouTube channel?

Frank Reiser from Frank's Beautiful Rocks and Minerals. He does one on using a petroscope.
https://youtu.be/YcQ65okLXTk
by Glot
Sat Apr 18, 2020 7:25 am
Forum: Microscopes and optics
Topic: Working distance
Replies: 4
Views: 532

Re: Working distance

Thanks.
What would a typical WD for same objective be?
by Glot
Sat Apr 18, 2020 12:22 am
Forum: Microscopes and optics
Topic: Working distance
Replies: 4
Views: 532

Working distance

With Leitz objectives. EF 40/ 0.65 P. Is the WD 0.65mm?
by Glot
Sat Apr 18, 2020 12:09 am
Forum: Microscopes and optics
Topic: Highest power LED suitable for microscope?
Replies: 15
Views: 1265

Re: Highest power LED suitable for microscope?

You will need a COB style to get 10 watts. Bigclive.com on you tube has a lot of handy led info. If you are using raw LED then you need current limiting. Sounds like you need a better power supply if the voltage at its output is dropping. I use an iron ore lighting transformer (they are being thrown...
by Glot
Fri Apr 17, 2020 5:53 am
Forum: Microscopes and optics
Topic: Highest power LED suitable for microscope?
Replies: 15
Views: 1265

Re: Highest power LED suitable for microscope?

Are you looking for a direct replacement or something you can play around and build yourself? Quality LED chips produce about 100 lumens per watt now. You can get chips with a CRI of 97. For quality LED chips, you will need to look outside normal suppliers.
by Glot
Fri Apr 17, 2020 5:45 am
Forum: Resources (online, books etc.)
Topic: Spindle stage
Replies: 3
Views: 858

Re: Spindle stage

There is also a short you tube. Just search spindle stage.
by Glot
Tue Apr 14, 2020 11:40 pm
Forum: Resources (online, books etc.)
Topic: Spindle stage
Replies: 3
Views: 858

Spindle stage

Some may find this interesting.
by Glot
Tue Apr 07, 2020 8:54 am
Forum: Resources (online, books etc.)
Topic: Lighting
Replies: 3
Views: 756

Re: Lighting

Gotta love the university of you tube. There's some really good videos by a bloke called microbehunter,worth watching.
by Glot
Mon Apr 06, 2020 8:35 am
Forum: Resources (online, books etc.)
Topic: Lighting
Replies: 3
Views: 756

Lighting

A lot of info well presented

https://youtu.be/ZRZ9_ov6Fak
by Glot
Wed Apr 01, 2020 9:01 am
Forum: Beginner's corner
Topic: Polarising
Replies: 19
Views: 10942

Re: Polarising

Jb89. Be very interested to hear conclusions. I have identified a couple of UV cure. Viscosity is a bit high at 2000 but found one that is 300 and RI of about 1.53. UV cure. Haven't tried it yet. I like the idea of controlling the rest time before cure to allow the bonding agent to flow very thin. T...
by Glot
Wed Apr 01, 2020 2:12 am
Forum: Pictures and Videos
Topic: Jasper
Replies: 0
Views: 575

Jasper

Jasper plumes. Low mag stereo. A mixture of iron minerals in clear Chalcedony
by Glot
Tue Mar 31, 2020 10:30 pm
Forum: Microscopes and optics
Topic: Brands
Replies: 0
Views: 547

Brands

With regards polarising petrographic microscopes. Generally, which is considered a better brand? Leitz or Zeiss? Which is likely to be more resellable,all things being equal.
by Glot
Sat Mar 14, 2020 8:01 am
Forum: Pictures and Videos
Topic: Synthetic sapphire
Replies: 12
Views: 5036

Re: Synthetic sapphire

Interesting. Like to see more along those lines.
by Glot
Sat Mar 14, 2020 1:13 am
Forum: For forum members who want to buy and sell equipment
Topic: Recommend
Replies: 1
Views: 2254

Recommend

For anyone in Australia looking to buy, I have found Telescopes and Astronomy in South Australia very friendly. They also do microscopes, new and used. They just didn't have what I was after but they tried.
by Glot
Wed Mar 11, 2020 7:04 am
Forum: Microscopes and optics
Topic: Quality?
Replies: 3
Views: 3156

Quality?

Does anyone know what sort of quality a Leitz Laborlux 11 is? I have found a pol for sale but not sure of the price. Hence, trying to get some idea what they are like. Second hand petrographic microscopes are almost non existant in Australia.
by Glot
Fri Mar 06, 2020 11:44 pm
Forum: Beginner's corner
Topic: Polarising
Replies: 19
Views: 10942

Re: Polarising

I have come to the conclusion, with out testing my theory, so take it with a grain of salt. When I frost a slide, I am creating many fine facets. If the adhesive has a different RI, it will refract at those facets. This scatters the polarised light and de polarises it. Bonding agents used in univers...
by Glot
Wed Mar 04, 2020 7:44 am
Forum: Beginner's corner
Topic: Polarising
Replies: 19
Views: 10942

Re: Polarising

I appreciate any help or feedback.
by Glot
Wed Mar 04, 2020 12:35 am
Forum: Beginner's corner
Topic: Polarising
Replies: 19
Views: 10942

Re: Polarising

A quick search will give you numerous instructional videos and documents from universities, colleges, equipment manufacturers etc.
by Glot
Tue Mar 03, 2020 7:57 am
Forum: Beginner's corner
Topic: Polarising
Replies: 19
Views: 10942

Re: Polarising

They all say to frost the slides and flatten them. Amazing how un flat float glass is. The petrographic suppliers sell frosted and clear slides. The finished specimen needs to be between 29 and 31 microns so a flat slide is essential.
by Glot
Mon Mar 02, 2020 10:08 pm
Forum: Camera systems and imaging
Topic: Video Editing Software
Replies: 10
Views: 4739

Re: Video Editing Software

I was wondering the same thing. I use W10 and have colour accuracy issues plus I can only save in jpeg (that I can find, anyway). Just want to capture camera images and vids accurately with little editing required. Will have a look at those couple mentioned.
by Glot
Mon Mar 02, 2020 10:03 pm
Forum: Camera systems and imaging
Topic: What is a good video camera to use with a microscope?
Replies: 20
Views: 8409

Re: What is a good video camera to use with a microscope?

Your very first question is budget. Then required image quality.