• Research Grade Filters
  • Transmission Curves
Filter Image Filter Text
Filter Model  
RG 28 LRGB Filter Specifications
Filter Size:
28 mm
Filter Description
FLI Research Grade Filters use sputtered coatings. Filter sets are par focal to F4.5
Filter Shape:
round
Filter Thickness:
3mm +/-0.1mm
Parallelism
30 second or better
Bandwidth
N/A
Surface Flatness
1/4 wave per inch
U.S. Price:
$299
 

Typical transmission curves for our filters

 

  • U
  • B
  • V
  • R
  • I
  • Lum
  • Red
  • Green
  • Blue
  • Ha
  • SII
  • OIII

These filters are A/R coated Johnson/Bessell filters that are blocked up to 1200nm

U Transmission Curve

These filters are A/R coated Johnson/Bessell filters that are blocked up to 1200nm

B Transmission Curve

These filters are A/R coated Johnson/Bessell filters that are blocked up to 1200nm

V Transmission Curve

These filters are A/R coated Johnson/Bessell filters that are blocked up to 1200nm

R Transmission Curve

These filters are A/R coated Johnson/Bessell filters that are blocked up to 1200nm

I Transmission Curve
L Filter Transmission Curve
Red Filter Transmission Curve
Green Filter Transmission Curve
Blue Filter Transmission Curve
Ha Filter Transmission curve
sII Filter Transmission Curve
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