Search found 291 matches
- Wed Feb 10, 2021 1:31 pm
- Forum: Macro and Micro Technique and Technical Discussions
- Topic: Episcopic intro video
- Replies: 2
- Views: 1739
Episcopic intro video
Hi, all... it's been a long time. I put together an introductory video about episcopic techniques, so I figured I'd share it! It is 10 minutes long and uses a Nikon Epiphot TME. [url]https://lavinia.as.arizona.edu/~mtuell[/url]is my site, which maybe you've visited in the past. This video can be fou...
- Sun Dec 16, 2018 12:03 am
- Forum: Equipment Discussions
- Topic: MM-11 schematic?
- Replies: 1
- Views: 2482
MM-11 schematic?
Hi, I picked up an MM-11 base, and the switch indicator comes on, but neither lamp output seems to work. First, the bottom light says that it is 20W, but the top light isn't marked... does anyone know if it is also 20W, or if it sports a 50W supply? Second, does anyone happen to have the schematics ...
- Wed Dec 12, 2018 9:10 pm
- Forum: Equipment Discussions
- Topic: Nikon Diaphot TMD w/ DIC -- Help!
- Replies: 25
- Views: 11621
Kurt, Well, thanks for the info! I've actually got one of those 20 mm extenders that hold the slider. It came with a fluorescence scope. Now that is starting to make some sense! As for your questions - #1, I'm not sure - it may be that they are of the same vintage, but one was if you also wanted to ...
- Mon Dec 10, 2018 8:11 pm
- Forum: Equipment Discussions
- Topic: Mirau objective?
- Replies: 19
- Views: 6571
Yes, the MI is a different beast. The DI is very useful for what it is intended for, but not so much outside of that. If you were making knives or razor blades or optical surfaces or semiconductor wafers - it gives a way to visualize the surface in (essentially) 3D, so you can know it is good or tha...
- Mon Dec 10, 2018 1:19 pm
- Forum: Equipment Discussions
- Topic: Mirau objective?
- Replies: 19
- Views: 6571
Well, everything is reflective - the best AR coatings still aren't perfect. But, I think you mean highly reflective? No, it works fine on bare glass which is about 4% reflective. The contrast of the fringes will vary with the ratio of test beam to reference beam, so you will see changes in contrast ...
- Sun Dec 09, 2018 10:08 pm
- Forum: Technical and Studio Photography -- Macro and Close-up
- Topic: Tumbleweed flowers
- Replies: 5
- Views: 3095
- Sun Dec 09, 2018 6:20 pm
- Forum: Equipment Discussions
- Topic: Mirau objective?
- Replies: 19
- Views: 6571
Hi, sorry, they've "upgraded" the server my site is on, and it is currently only sort of working... Anyway, in the video made by James, he is adjusting focus, which changes the path length between the specimen and the reference mirror in the objective. This goes from no fringes (out of the range of ...
- Thu Nov 29, 2018 12:24 am
- Forum: Photography Through the Microscope
- Topic: microcontroller die in DIC
- Replies: 2
- Views: 1406
- Tue Nov 27, 2018 1:03 am
- Forum: Technical and Studio Photography -- Macro and Close-up
- Topic: Negative copier
- Replies: 12
- Views: 3990
You of course are correct, for most instances. It is empty resolution beyond maybe 3200 dpi, depending on a few factors (diffraction and aberrations, for sure). In theory, regular film does have about 300 line pairs/mm, which is ~15,000 dpi. While I haven't tried it yet, for high contrast, low iso i...
- Mon Nov 26, 2018 10:36 pm
- Forum: Technical and Studio Photography -- Macro and Close-up
- Topic: Negative copier
- Replies: 12
- Views: 3990
Funny you should bring this up. I just got an Epson Perfection V850 Pro - that thing is beautiful! I'm actually scanning some 35 mm color negatives as I type. I mostly got it because it can do large format negatives (and positives), since I've started playing around with 4x5 (inch), but my enlarger ...
- Mon Nov 26, 2018 10:14 pm
- Forum: Technical and Studio Photography -- Macro and Close-up
- Topic: Porophyllum gracile
- Replies: 9
- Views: 3740
- Thu Nov 22, 2018 11:53 am
- Forum: Photography Through the Microscope
- Topic: microcontroller die in DIC
- Replies: 2
- Views: 1406
microcontroller die in DIC
Nikon Optiphot / Nikon D810 at full resolution, then 25% sized and cropped - single images with 1 second exposures 5x M Plan (iso 80) http://www.photomacrography.net/forum/userpix/5650_5x_DIC_microcontroller_1_crop2_1.jpg 100x M Plan (iso 125) http://www.photomacrography.net/forum/userpix/5650_100x_...
- Sun Nov 11, 2018 10:16 pm
- Forum: Photography Through the Microscope
- Topic: Madagascar Sunset Moth 40x DF
- Replies: 3
- Views: 1809
Ah, yes... both darkfield with BD DIC 40x objectives. The camera, believe it or not, is a cheap-o USB camera from OMAX, although it is the 14 MP version. Presented here is at 25% of the original size, pushed through Photoshop for levels and unsharp masking. I just got a c-mount adapter so I can put ...
- Tue Oct 30, 2018 11:52 am
- Forum: Photography Through the Microscope
- Topic: Madagascar Sunset Moth 40x DF
- Replies: 3
- Views: 1809
Madagascar Sunset Moth 40x DF
I just picked up an Epiphot - what a nice instrument!
Mike
Mike
- Sat Oct 06, 2018 1:35 am
- Forum: Technical and Studio Photography -- Macro and Close-up
- Topic: Madagascar sunset moth
- Replies: 0
- Views: 1451
Madagascar sunset moth
Steve was nice enough to give one of his sunset moths to me - here is a stack (Zerene DMap) of 63 frames at ISO 400, 1/200th of a second full-frame Nikon D810 with a Zeiss Triotar 135 mm prime as a tube lens and a reversed Pentax 67 200 mm f/4 (wide open = NA 0.125) as the objective, for an on-senso...