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surplus. I here I tried to cross those p/ns on the lesker site: http://www.lesker.com/newweb/Pressure_Measurement/Thermocouple/Tubes_C rossReference.cfm?

I was able to purchase some Sargent-Welch thermocouple gauges surplus. I have models 1515A and 1516A gauges. Sargent-Welch was spectacularly unhelpful when I tried to obtain data sheet on them. Does

This group is becoming downright energetic! source with only a little success. OK you have my attention! pump with the 2". I suppose you'd have to have the full 3-dimensional (mass flow, inlet

<charlesmitchard@i...> wrote: cooler using Hey if Ken starts a "Compressed Gas" list - let me know! One can acquire a EPA 609 license for $15 + an online test. The 609 is required to purchase most

James, Thanks for the great pictures of your awesome coating chamber! Are you implying that the first item coated was that monster mirror? Can you tell us what size diffusion pump you are using to

I am not sure how the telescope mirror is used, now that I think about it I assume you are coating first surface mirrors. The shutter might improve the coating by effectively closing off the aluminum

Greetings All, Well it took nearly 6 months to fabricate, nearly 160 hours of labor, and cost a little over $250 (not including pumping station) but the new vacuum chamber coated its first optics

Joe Keaser <keaser.home@...> wrote:Ron, You may have run out of aluminum during the deposition run, I have had that same problem. Are you using a shutter ? Joe, the coverage was better than

James Lerch <jlerch1@...> wrote: I also run the glow discharge after coating, but only for a few minutes.. Perhaps switching to aluminum for the Glow Discharge electrodes might help..

Dear Yahoo! Groups Members, Due to a recent outbreak of computer viruses being transmitted via email messages, Yahoo! Groups is experiencing delays in delivering group messages. To improve

Ron, You may have run out of aluminum during the deposition run, I have had that same problem. Are you using a shutter ?

Charles... Thanks for that link... A lot of good information on the refrigerants but not much mention of how to adjust or figure the capillary size. I've got it bookmarked for later reference. Ken

Hi Ken, a bit late but this site may have what you are looking for Its also a great set of instructions on how to build your own cooler using old fridge pumps. well worth a look.

Greetings James / All, Congratulations, interesting enough I just coated my first telescope mirror, I was waiting to open the tank when I read your post. This was my 3rd attempt on this 8" after a

Greetings All, Just came in from my first evaporation attempt and everything went perfect! :) I shot some images of the filament wiring, some more glow discharge phenomenon, and finally an image of

on that X-Ray discussing assuming that my the E-Beam I have some background in the medical xray field. It is my opinion that you are safe from this risk while using a neon sign transformer for glow

Should only cost about $10,000 to fill it up with #704 oil... Ken Hunter