H-alpha/Red Continuum Filter Pair Info

H-alpha transmission curve ( PDF )

H-alpha transmission curve data ( ASCII )

Red Continuum transmission curve ( PDF )

Red Continuum transmission curve data ( ASCII )

H-alpha/Red Continuum transmission curve overlay ( PDF )

ETF 2003
Summary of Prices
Item     Description                           Price Each
  #                                              ($US)
1. H-alpha 656.3/5.0 nm, 100x100 mm              $2970
2. Red Continuum 645.0/10.0 nm, 100x100 mm       $2970

Common Specifications
a. CWL:  656.3 +/- 0.8 nm (for H-alpha) or 645.0 +/- 1.5 nm (for
Continuum) in beam f/11 at 12 degrees C, normal incidence.
b. FWHM:  5.0 +/- 0.8 nm (for H-alpha) or 10.0 +/- 1.5 nm (for Continuum)
in collimated beam.
c. Minimum Peak Transmission:  70%.
d. Blocking:  No leaks worse than 0.01% (10e-4) 0.3-1.1 microns.
e. Size:  100.0 x 100.0 +0 -0.5 mm.  You may order 4.000 x 4.000 +0
-0.025 inches for the same price.
f. Minimum Clear Aperture:  92.0 x 92.0 mm.
g. Thickness:  8.0 mm maximum.  Set parfocal to within 0.2 mm.
h. Surface Flatness:  lambda/4 per inch, where lambda=633 nm.
i. Parallelism:  1 arc minute.
j. Scratch-Dig:  60-40.
k. A/R Coating:  Both surfaces, reflectivity < 1.5% per surface.
l. Documentation:  Spectrum of each filter is taken just before
shipment.  A graphical printout is enclosed with shipment and upon
request a text file of the data is sent by e-mail (wavelength vs.
transmission).  Blocking spectrum would be graphical (not digitized).

Custom Scientific, Inc.
3852 North 15th Avenue
Phoenix, Arizona 85015 USA
Phone:  602-200-9200, Fax:  602-200-9206
optics@CustomScientific.com

http://www.CustomScientific.com