Search found 1635 matches
- Thu Apr 12, 2018 12:15 am
- Forum: Photography Through the Microscope
- Topic: A Study in Scarlet aka There Will be Blood - images added
- Replies: 17
- Views: 7655
- Wed Apr 04, 2018 12:54 am
- Forum: Photography Through the Microscope
- Topic: Oil Immersion Phase with the Leitz Heine Condenser
- Replies: 11
- Views: 2809
- Wed Apr 04, 2018 12:50 am
- Forum: Photography Through the Microscope
- Topic: Mineral
- Replies: 7
- Views: 2371
- Tue Apr 03, 2018 11:53 am
- Forum: Photography Through the Microscope
- Topic: Oil Immersion Phase with the Leitz Heine Condenser
- Replies: 11
- Views: 2809
- Tue Apr 03, 2018 11:51 am
- Forum: Photography Through the Microscope
- Topic: Mineral
- Replies: 7
- Views: 2371
Very nice result indeed at this rather high magnification. I'm sure people would be interested in the objective and method of illumination if it isn't a trade secret. :wink: I assume the mineral is Bornite, aka 'peacock ore', an iron, copper sulphide mineral known for it's iridescent colours. https:...
- Sun Apr 01, 2018 12:50 am
- Forum: Photography Through the Microscope
- Topic: Oil Immersion Phase with the Leitz Heine Condenser
- Replies: 11
- Views: 2809
Thanks Walter, Ken and zzffnn. You may be too conservative on Heine's dark ground NA limit. Almost all dedicated dry darkfield condenser can provide DF up to NA 0.65. Heine's light cone is very narrow and can likely go up higher, even without oil lens. With oil lens, my Heine can provide good DF for...
- Fri Mar 30, 2018 9:30 am
- Forum: Photography Through the Microscope
- Topic: Oil Immersion Phase with the Leitz Heine Condenser
- Replies: 11
- Views: 2809
Thanks Walter. I like the Heine. One needs to understand what it's good at and what it's not. It's not an especially useful bright field condenser; it can give good (circular) oblique effects; it does very useful dark ground up to about 0.65NA. What it is most useful as is a very effective and flexi...
- Thu Mar 29, 2018 8:22 am
- Forum: Photography Through the Microscope
- Topic: Oil Immersion Phase with the Leitz Heine Condenser
- Replies: 11
- Views: 2809
Oil Immersion Phase with the Leitz Heine Condenser
I had a play with the Heine and a Leitz X70 Phaco fluorite, 1.15, 170mm oil immersion objective. This is not a Pv objective designed for the Heine, but a regular phase objective designed for a conventional phase condenser. One of the virtues of the Heine is that it is supposed to give phase contrast...
- Tue Mar 27, 2018 8:55 am
- Forum: Photography Through the Microscope
- Topic: Nummulites - a Giant Foraminiferan
- Replies: 7
- Views: 3770
Thanks Pau and Jacek Rik -- Foraminifera can apparently be multinucleate, especially the multi-chambered species, though it is not universal amongst forams. " The foraminiferid consists of a outer shell filled with protoplasm. This plasma is differentiated into an outer layer of clear ectoplasm and ...
- Mon Mar 26, 2018 10:18 am
- Forum: Photography Through the Microscope
- Topic: Nummulites - a Giant Foraminiferan
- Replies: 7
- Views: 3770
- Mon Mar 26, 2018 10:07 am
- Forum: Photography Through the Microscope
- Topic: Red marine alga ID please
- Replies: 10
- Views: 3463
Mainly due to the fact that it disintegrated overnight - thought that was un-calcareous behavior Yes that is surprising, but the cylindrical appearance of the cells and their resemblance to bones in a hand immediately brings the Corallines to mind. Curious. I notice you collected it in a marina, th...
- Mon Mar 26, 2018 9:26 am
- Forum: Photography Through the Microscope
- Topic: Red marine alga ID please
- Replies: 10
- Views: 3463
It still looks like a classic marine shoreline red alga to me. Some scale on the micrograph would help, but otherwise I'm not sure why you dismiss the Corralina group of red algae. The group includes encrusting and branching tree-like forms, a habit which your example displays. https://en.wikipedia....
- Mon Mar 26, 2018 8:04 am
- Forum: Photography Through the Microscope
- Topic: Nummulites - a Giant Foraminiferan
- Replies: 7
- Views: 3770
Nummulites - a Giant Foraminiferan
Nummulites are: 'fossil or living foraminiferan of the Nummulites genus (or a related genus) that has a disc-like, spiral, calcareous skeleton. Fossil nummulites range up to several inches in size, making them quite impressive protozoa (single-celled, eukaryotic organisms). Nummulite fossils are com...
- Mon Mar 26, 2018 5:41 am
- Forum: Photography Through the Microscope
- Topic: Red marine alga ID please
- Replies: 10
- Views: 3463
- Sat Mar 24, 2018 9:04 am
- Forum: Photography Through the Microscope
- Topic: Moss sporangium in stereo (cross-eyed)
- Replies: 9
- Views: 2198