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Optical filter astronomy 540WB80 color green 24.5MM


Optical filter astronomy 540WB80 color green 24.5MM


From: Gertrude Farrell
Subject Optical filter astronomy 540WB80 color green 24.5MM
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This is a performance second due to transmission in the primary green band.
An Interference Filter for Astronomers, and other scientists, looking for isoltation of a the Green color.
This filter has been developmented to produce transmission of the green light from 500nm to 600nm, while attenuating most of the background light from the mid Ultra-violet to the near infrared.
The filter is unmounted, and has an outer dimension of 24.5 mm +.1-.5 mm, and a thickness of .5 mm. It can be mounted in a standard 28 or 1.25 eye piece threaded mount. (Eye piece rings are available at my Store)
Specifications follow: To Pass > 70% of Green light, and to reject by reflection 99.9+% of all other light from UV to approximately 750+nm.
Filter supplied with actual spectral data.
If you are still not finding a good match, follow my links to Omega's Build a Filter. With a note to the effect that cosmetic seconds are acceptable, you will be surprised how economical an exact match can be.
For much more information on interference filters and their applications please visit my blog at www.bjomejag.squarespace.com/ . If you have ideas for additional topics to elaborate on, do leave a note.
Contact: Gertrude-Farrell@rockford-industrial.com (Gertrude Farrell)




Optical filter astronomy 540WB80 color green 24.5MM