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Lumicon 2.0" Deep Sky Filter

$200.00
CWL: 494 nm Nominal
FWHM: 70 nm Nominal
HP: 459.0 +/- 5 nm, 529 +/- 6 nm
Transmittance: 486nm, 496nm, 501nm& 656.3nm >= 90%
Blocking  T < 0.1%@ 400-436 nm
Blocking  T < 0.01% 546-617 nm
Blocking  T < 0.1% 546-630 nm
Reflectance (design goal)  
1 of the 2 surfaces = 1% Max @ 494 nm **
   
Optical Properties:  
TWF: <1.5 Waves, prior to coating
Parallelism: < 30 arcsec.
   
Dimensions:  
Diameter: 2.0 +/- 0.01"
Thickness: 2.0 +/- 0.25 mm
Clear Aperture: 1.41" Minimum
   
Cosmetics:  
Pinholes: No pinholes larger than 0.1 mm. Ignore pinholes smaller than 0.025 mm. No more than 5 pinholes between 0.1 and 0.025 mm within any 20 mm diameter area.
Surface Quality: 60/40, 0.020" Max Chip
  No Chamfer
   
Operating Conditions: AOI=0°, Collimated Light