Search found 65 matches
- Tue Apr 28, 2020 7:44 am
- Forum: Miscellaneous
- Topic: Lamps
- Replies: 1
- Views: 905
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?
- Sun Apr 19, 2020 9:15 am
- Forum: Microscopes and optics
- Topic: Highest power LED suitable for microscope?
- Replies: 15
- Views: 1642
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
https://www.lumileds.com/products/high-power-leds
- Sun Apr 19, 2020 9:15 am
- Forum: Beginner's corner
- Topic: What to buy. Advice
- Replies: 3
- Views: 708
Re: What to buy. Advice
I was trying to explain in an uncomplicated way from one beginner to other beginners.
- Sun Apr 19, 2020 7:52 am
- Forum: Beginner's corner
- Topic: What to buy. Advice
- Replies: 3
- Views: 708
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...
- Sat Apr 18, 2020 10:26 pm
- Forum: Microscopes and optics
- Topic: Working distance
- Replies: 4
- Views: 700
Re: Working distance
I guess that's a fluke and not a rule.
- Sat Apr 18, 2020 10:25 pm
- Forum: Miscellaneous
- Topic: Slides
- Replies: 5
- Views: 1218
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
- Sat Apr 18, 2020 9:10 am
- Forum: Microscopes and optics
- Topic: Highest power LED suitable for microscope?
- Replies: 15
- Views: 1642
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.
- Sat Apr 18, 2020 7:55 am
- Forum: Miscellaneous
- Topic: Slides
- Replies: 5
- Views: 1218
Slides
General question. Why are slides so thin? Can i use thicker glass?
- Sat Apr 18, 2020 7:53 am
- Forum: Miscellaneous
- Topic: What is your favorite microscopy YouTube channel?
- Replies: 12
- Views: 5178
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
https://youtu.be/YcQ65okLXTk
- Sat Apr 18, 2020 7:25 am
- Forum: Microscopes and optics
- Topic: Working distance
- Replies: 4
- Views: 700
Re: Working distance
Thanks.
What would a typical WD for same objective be?
What would a typical WD for same objective be?
- Sat Apr 18, 2020 12:22 am
- Forum: Microscopes and optics
- Topic: Working distance
- Replies: 4
- Views: 700
Working distance
With Leitz objectives. EF 40/ 0.65 P. Is the WD 0.65mm?
- Sat Apr 18, 2020 12:09 am
- Forum: Microscopes and optics
- Topic: Highest power LED suitable for microscope?
- Replies: 15
- Views: 1642
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...
- Fri Apr 17, 2020 5:53 am
- Forum: Microscopes and optics
- Topic: Highest power LED suitable for microscope?
- Replies: 15
- Views: 1642
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.
- Fri Apr 17, 2020 5:45 am
- Forum: Resources (online, books etc.)
- Topic: Spindle stage
- Replies: 3
- Views: 1322
Re: Spindle stage
There is also a short you tube. Just search spindle stage.
- Tue Apr 14, 2020 11:40 pm
- Forum: Resources (online, books etc.)
- Topic: Spindle stage
- Replies: 3
- Views: 1322
Spindle stage
Some may find this interesting.
- Tue Apr 07, 2020 8:54 am
- Forum: Resources (online, books etc.)
- Topic: Lighting
- Replies: 3
- Views: 1179
Re: Lighting
Gotta love the university of you tube. There's some really good videos by a bloke called microbehunter,worth watching.
- Mon Apr 06, 2020 8:35 am
- Forum: Resources (online, books etc.)
- Topic: Lighting
- Replies: 3
- Views: 1179
- Wed Apr 01, 2020 9:24 pm
- Forum: Resources (online, books etc.)
- Topic: Leitz history
- Replies: 3
- Views: 1085
- Wed Apr 01, 2020 9:01 am
- Forum: Beginner's corner
- Topic: Polarising
- Replies: 19
- Views: 11462
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...
- Wed Apr 01, 2020 2:12 am
- Forum: Pictures and Videos
- Topic: Jasper
- Replies: 0
- Views: 645
Jasper
Jasper plumes. Low mag stereo. A mixture of iron minerals in clear Chalcedony
- Tue Mar 31, 2020 10:30 pm
- Forum: Microscopes and optics
- Topic: Brands
- Replies: 0
- Views: 601
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.
- Sat Mar 14, 2020 8:01 am
- Forum: Pictures and Videos
- Topic: Synthetic sapphire
- Replies: 12
- Views: 5375
Re: Synthetic sapphire
Interesting. Like to see more along those lines.
- Sat Mar 14, 2020 1:13 am
- Forum: For forum members who want to buy and sell equipment
- Topic: Recommend
- Replies: 1
- Views: 2343
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.
- Wed Mar 11, 2020 7:04 am
- Forum: Microscopes and optics
- Topic: Quality?
- Replies: 3
- Views: 3278
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.
- Fri Mar 06, 2020 11:44 pm
- Forum: Beginner's corner
- Topic: Polarising
- Replies: 19
- Views: 11462
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...
- Wed Mar 04, 2020 7:44 am
- Forum: Beginner's corner
- Topic: Polarising
- Replies: 19
- Views: 11462
Re: Polarising
I appreciate any help or feedback.
- Wed Mar 04, 2020 12:35 am
- Forum: Beginner's corner
- Topic: Polarising
- Replies: 19
- Views: 11462
Re: Polarising
A quick search will give you numerous instructional videos and documents from universities, colleges, equipment manufacturers etc.
- Tue Mar 03, 2020 7:57 am
- Forum: Beginner's corner
- Topic: Polarising
- Replies: 19
- Views: 11462
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.
- Mon Mar 02, 2020 10:08 pm
- Forum: Camera systems and imaging
- Topic: Video Editing Software
- Replies: 13
- Views: 5264
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.
- 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: 9129
Re: What is a good video camera to use with a microscope?
Your very first question is budget. Then required image quality.