Hi all, One of the most simple and easy to get, yet stunning specimens in darkfield illumination are for example banana cells. I made a picture the other day,...
53353
William Mark
wamman219
Dec 2, 2009 3:51 pm
Rolf, How did you prepare the slide? Nice photo! Bill ________________________________ From: rhamvossen <r.vossen@...> To: Microscope@yahoogroups.com Sent:...
53354
rhamvossen
Dec 2, 2009 4:20 pm
Bill, it's just a little bit from the inside (eatable) pulp of the banana suspended in a drop of water. Rolf...
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Microscopeman
microscopeman1
Dec 2, 2009 4:22 pm
Truly stunning image, Rolf - well done! Cheers, Gregg ... From: "rhamvossen" <r.vossen@...> To: <Microscope@yahoogroups.com> Sent: Wednesday, December 02,...
53356
Fred Hess
fredhess2002
Dec 2, 2009 6:07 pm
Hallo Rolf, Leuke tip! Nice hint ! Fred ... From: rhamvossen To: Microscope@yahoogroups.com Sent: woensdag 2 december 2009 16:32 Subject: [Microscope] Banana...
53357
John
a.johnw
Dec 3, 2009 1:45 pm
The optiphot's arrived and all looks good so far. Few marks on the frame but nothing serious. All of the controls work well. I'm alarmed by how fast the fine...
53358
Fred
fred.hebard
Dec 3, 2009 4:16 pm
Not especially. Either prism may be inappropriate. I don't know how to look this stuff up on Nikon's site, or a suitable archive. Strain-free is not as...
53359
mountains_search
mountains_se...
Dec 3, 2009 4:37 pm
John, I have a Labophot-2. The objectives, condenser, and stage are interchangeable with Optiphot and Optiphot-2. I'm not sure about other bits. The...
53360
John
a.johnw
Dec 3, 2009 5:09 pm
Nikon are a bit annoying. They do not seem to hold any information at all on scopes that aren't current. The stand on this is a huge improvement on many others...
53361
John
a.johnw
Dec 3, 2009 6:24 pm
Hi Michael you might well be able to use short jis objectives if you fit them with 10mms extensions. That would correct the tube length too. The entire stage...
53362
LionelS
lionel_silva
Dec 4, 2009 12:33 am
Does anyone know where to get a 32mm 80A filter? I have a blue filter that came with my scope but want to see if an 80A will do better. Google came up with...
53363
psneeley2003
Dec 4, 2009 4:58 am
Do you really need 'one for the microscope' and in a specific size. I use on that is too big, but no matter . . . it just sits on top of the light port...
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John
a.johnw
Dec 4, 2009 11:41 am
You can also cut the square cokin/kood etc types to what ever size you want. There are also many sizes of photographic filers available including smaller sizes...
53365
prmartin_60050
Dec 4, 2009 2:51 pm
I'm new to this group and just returning to microscopy in general as a result of my photographic interest in imaging smaller and smaller objects! I wonder if...
53366
William Mark
wamman219
Dec 4, 2009 6:12 pm
Paul, My two cents: What is the difference/practica l application between the Zeiss darkfield 1.1/1.25 and the 1.2/1.4 condensers? Difference is in the...
53367
rene
rvanwezel
Dec 4, 2009 6:37 pm
Hi Paul, the 1.1-1.25 is usable for objectives with NA<0.9, the 1.2-1.4 up to NA 1.1 objectives, if you are lucky. Both NEED immersion, otherwise NO light will...
53368
prmartin_60050
Dec 4, 2009 7:20 pm
Thanks Rene', That was my thought, but I could not find any documentation to this effect. I'm just really learning the DF technique and, while it can be...
53369
prmartin_60050
Dec 4, 2009 7:27 pm
Hello Bill, Thanks for your help on this issue. I do not know enough about the condenser design to know if the paint is responsible for shaping the light...
53370
John
a.johnw
Dec 4, 2009 7:51 pm
On your last question. Dry dark field condensers are available and these should cope with a typical 40x na 0.65 objective or any lower magnification of the...
53371
pennine56
Dec 4, 2009 7:59 pm
... Hello Steve Thanks for the info, I have the author's valuable earlier volumes but wasn't aware of this latest one, so ordered one. It's certainly chock...
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John
a.johnw
Dec 4, 2009 8:29 pm
I've just ordered both books. The site suggests that they are printed in hong kong. I'm going to be a bit upset about the postal charges if they are posted...
53373
Herb
bcarson892003
Dec 4, 2009 10:51 pm
What are the basic requirements of a microscope to be used in the study of fossil pollen? Does it have to have any special features or can it be a basic...
53374
Microscopeman
microscopeman1
Dec 4, 2009 11:06 pm
Herb, What is the form of the fossil pollen? Most microfossils I've worked with are opaque objects, best observed with a stereo microscope (aka dissecting ...
53375
LionelS
lionel_silva
Dec 4, 2009 11:11 pm
Thanks John. I use a 20W halogen almost always set to max. I think its color temp would be in the low 3000s. I'm trying to improve my pictures' color. The...
53376
LionelS
lionel_silva
Dec 4, 2009 11:12 pm
Good idea. I do that with my polarizing filter. Why not with the 80A. I would want a glass one because of the heat. I'll shop again with that in mind....
53377
John
a.johnw
Dec 4, 2009 11:54 pm
I think halogen is about the same as an over driven tungsten about 3,200K but given that it's microscope it may well be over driven. That might give something...
53378
LionelS
lionel_silva
Dec 4, 2009 11:57 pm
I'll try both. :-) Lionel...
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Herb
bcarson892003
Dec 5, 2009 12:02 am
I have never looked at pollen under a microscope, but I believe they are opaque or can be stained so. They are mostly greater than 10 microns in size and...
53380
sbcwylie
Dec 5, 2009 12:02 am
Hi there, I have a Zeiss scope (serial # 4305455) and a Leitz scope (serial # 567346). I am going to be selling them via eBay, but I wanted to post the model...
53381
Microscopeman
microscopeman1
Dec 5, 2009 12:18 am
Herb, Stereo microscopes typically zoom (or adjust, if not zooming) from 7x - 30x, or 7x - 45x. For features as small as 10 microns, you can add a 2x ...
