Happily Serving You in the Same Location for Over 58 Years!

Welcome!

FLI - Research Grade 50mm Diameter SII

Model#: RG-50D-SII

Be the first to review this product

Availability: In stock

$495.00

FREE SHIPPING (48 States)
OR
Manufactured by: Finger Lakes Instrumentation

Details

FLI high transmission filters are manufactured in the United States with the highest quality fabrication techniques available. FLI offers a full line of filter types and sizes. Complete sets are available as well as individual filters in both round and square shapes.

 

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

Product Series

Our high transmission filters are manufactured in the United States with the highest quality fabrication techniques available. We offer a full line of filter types and sizes. Complete sets are available as well as individual filters in both round and square shapes.

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)

Additional Information

Name FLI - Research Grade 50mm Diameter SII
Manufacturer Finger Lakes Instrumentation
Model RG-50D-SII