Hi Not off-topic, but slightly away from the original question. My Dynazoom has the analyzer inside the head just above the thread of the objective. Tha...
Don't know if this will help but you might try the following fellows and ask what they can do for you... Try the shop of David St. John, (former chief engineer...
Hi all, I wonder if any of our members know the Reichert type 650401 photo controller? Its old, it works, but the times need adjustment. One minute ~= 46...
John, Pol filters for cameras come in two kinds regular and circular. Circular are nothing but a regular pol filter with a quarter wave plate behind it. It is...
Gordon Couger
Gordon@...
Aug 1, 2004 8:17 am
19341
Hi John, I try to answer your many questions. Polarizing filters are generally composed of a sheet of polarizing material sandwitched between clear protective...
Don, If all else fails a very accurate timer can be made with a solenoid that that releases a weight and pulls a strip of photosensitive paper under the...
Gordon Couger
Gordon@...
Aug 1, 2004 8:34 am
19343
John, If you are having problems with strain in the glass of your scope that shows up as lack of exclusion you can exclude as much of the glass as possible by...
Gordon Couger
Gordon@...
Aug 1, 2004 8:56 am
19344
Hi Don As Gordon said. Two possibilities. One, a complete new very accurate and cheap µP conrolled box, or measure the "corroded" pots. Then either look what...
G'day Salvatore Thanks. According to the Dynazoom manual, the analizer does go just above the objective. I can make a springloaded holder and put it into the...
Hi Gordon Yes, we could come to some arrangement off-line. As soon as I have a bit more money. My balance is $-5000. Unfortunately, half of my total income...
They are all 10K except one which is 35K. In my opinion it would be only one pot that needs adjustment, or two at the most. The charging rate is adjusted by...
You can make a 'waveplate' with a stretched bit of cellophane John. Try it. Don photos from Jim, they are all beautiful but have a blue background. I believe...
Hi Don Just a little hint. Try and change all electrolytic and tantalum capacitors which you thing are in the "charging" circuit. Some age or get leaky. ...
Hi Don I heard a lot about this cellophane business. Let's say I want to make one. Although I have no idea how it works but here goes. Can I stretch a piece of...
Don, http://www.couger.com/microscope/projects/coolpixsave.html this works very will with the Vitar 283. Vivatar has the manual online at ...
Gordon Couger
Gordon@...
Aug 1, 2004 11:33 am
19352
Here it is John, Just the kind of stuff you like. http://www.hiviz.com/tools/tools.htm There is a lot of elementary stuff about tripods and clamps, the...
Yes. Or you can turn a 32 mm outside, 29 mm inside, aluminium or brass tube and part off a few rings. Then cement a nicely stretched cellophane over the frame...
Its a pity this didn't happen a few months ago. I sold an electric shutter to a chap in the UK for not very much. The Wild MPS 51 and the Reichert both have...
John Fichtl wrote: queries about polarisers. For microscopy, HN22 is normally used because of it's greater polarising properties. However, the modern...
Hi Don That gave me an idea. Can I use the cellophane which women use with their conserving stuff? My mothers used to make jam and she put the cellophane in...
... Hi Gordon. I think we need a bit more information than that :-) If you want a vibrationless shutter that just covers the few mm diameter exit-pupil on a...
Hi Unfortunately, I already promised Gregg my Olympus PM10-M. The shutter is manual but vibration-dampened. Yes, Pellegrino might part with it but it won't be...
... their conserving stuff? Well, John, that is exactly what I use (and I am not a woman or a 'gay' Brit !). The brand happens to be called 'Portosan' and...
In message <008301c477a2$291006e0$2a556e01@pvr9>, Salvatore Previtera <sprevitera@...> writes ... Salvatore, I think you have been double dipping in this...
G'day David I swap the rest for a decent polarizer/analizer anytime:-) John.au John Fichtl wrote: queries about polarisers. For microscopy, HN22 is normally...
Hi all, Thanks for the many responses; I won't thank each one individually due to the noise level it would generate. Gordon, I have a 50f and 500f condenser....
morningstar@...
Aug 1, 2004 4:03 pm
19364
Greetings Group Is there in the archive with a review or comparison of quality of manufacture of instruments. Kindly give a date range if you recollect a...
Hi Terence I have the whole collection of posts and I cannot say that there is a thing like "comparison". A few comments were made regarding the quality of...
Hi John, The answer is in my past answer. Jim probably uses camera type filters, with not perfect extinction at blue wavelength, like the ones I use for my...
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