H-Alpha filter
Characteristic:
Narrow Bandpass Interference Filter for 656.3nm
Aperture : 44mm
Thread measurement : M48*0.75
Specification:
FWHM: 15NM
Peak of transmittance : >80%
out-of-band blocking : <1%
Curve:
H-Alpha filter Curve
Characteristic:
Narrow Bandpass Interference Filter for 656.3nm
Aperture : 44mm
Thread measurement : M48*0.75
Specification:
FWHM: 15NM
Peak of transmittance : >80%
out-of-band blocking : <1%
Curve:
H-Alpha filter Curve
August 10th, 2009 at 06:28 (#)
Hello, can you please post some more information on this topic? I would like to read more.
how much?
August 20th, 2009 at 09:15 (#)
have you sen my leaved tow message to you last time?why you never answer me
December 19th, 2009 at 16:49 (#)
Dear Sir can you please specofy the thread (pitch ) of your filters.
Thank you