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FLI Research Grade 50mm Diameter H-alpha (5nm)


Price: $725.00


  • Manufacturer: Finger Lakes Instrumentation
  • MPN: RG 50D Ha (5nm)
  • SKU: RG 50D Ha (5nm)
  • Availability: Custom Order - Call for Lead Times & Availability

RG 50D Hα
FLI Research Grade filter sets are par focal to F4.5
Size: 50 mm +0.2 / -0.5mm
Shape: round
Thickness: 3mm +/-0.1mm
Bandwidth: 5nm
Parallelism: 30 second or better
Surface Flatness: 1/4 wave per inch
 

Features:

AR: Durable AR coatings on both exterior surfaces over applicable transmission range

Scratch Dig: 60/40 or better (max scratch width 0.006mm, max dig 0.40mm)

Transmitted wavefront @ 633nm: Better than 0.25 wave/inch

Wedge: Better than 30 arcsec

Thickness: 5 +/- 0.05mm, par focal +/- 0.2mm, (filters start par focal +/- 0.1mm per recipe)





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