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FLI - Research Grade 50mm Square Hb 6nm

Model#: RG-50S-Hb

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Availability: In stock


Manufactured by: Finger Lakes Instrumentation


RG 50S Hb

FLI Research Grade filter sets are par focal to F4.5 (individual filters are also available, contact FLI)

Size: 50 mm +0.2 / -0.5mm

Shape: square

Thickness: 3mm +/-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.


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 Square Hb 6nm
Manufacturer Finger Lakes Instrumentation
Model RG-50S-Hb