eo_logo
 
Product added to cart

Astronomy Bandpass Filter, Johnson-Bessel, IR 50mm Dia.

Astronomy Bandpass Filters

Astronomy Bandpass Filters

×
Stock #21-131 10 to 12 days
×
Quantity Selector - Use the plus and minus buttons to adjust the quantity. +
₹64,616
Qty 1-5
₹64,616
Qty 6+
₹57,998
Volume Pricing
Request Quote
Product Downloads

Specifications

General

Type of Filter:
Johnson-Bessel, I
Type:
Bandpass Filter

Physical & Mechanical Properties

Diameter (mm):
50.00 +0/-0.25
Thickness (mm):
5.00 ±0.1
Parallelism (arcsec):
<30

Optical Properties

Center Wavelength CWL (nm):
900.00
Full Width-Half Max FWHM (nm):
300.00
Minimum Transmission (%):
>70
Surface Quality:
60-40
Transmitted Wavefront, RMS:
λ/4

Regulatory Compliance

RoHS 2015:
Certificate of Conformance:
REACH 241:

Product Details

  • Filter and Measure Light from Astronomical Objects
  • Ideal for Photometric Calibration
  • UBVRI Filters

Astronomy Bandpass Filters are used to filter out and measure specific bands of light emitted by astronomical and celestial objects. Johnson/Bessel filters are well suited for use with photomultiplier tubes and Kron/Cousin filters are well suited for use with Silicon sensors because of the sensors’ responsivity. Both types of filters utilize identical UV (U), Blue (B), and Violet (V) filters. However, the Red (R) and Infrared (I) filters are optimized for use with either a photomultiplier tube or silicon CCD detector. Astronomy Bandpass Filters have precisely controlled thicknesses to minimize the common problem of refocusing when changing filters.

Technical Information

Accessories

Title CompareStock Number  Price Buy
Astronomy Bandpass Filter, Kron-Cousins, Set of 25mm Dia. #21-108 ₹1,05,876 Qty 6+ ₹95,366   Request Quote
  • Contact Us
    ×
Astronomy Bandpass Filter, Kron-Cousins, Set of 50mm Dia. #21-114 ₹3,09,843 Qty 6+ ₹2,78,703   Request Quote
  • Contact Us
    ×
Astronomy Bandpass Filter, Kron-Cousins, Set of 50 x 50mm #21-120 ₹3,09,843 Qty 6+ ₹2,78,703   Request Quote
  • Contact Us
    ×
Astronomy Bandpass Filter, Johnson-Bessel, Set of 25mm Dia. #21-126 ₹1,05,876 Qty 6+ ₹95,366   Request Quote
  • Contact Us
    ×
Astronomy Bandpass Filter, Johnson-Bessel, Set of 50mm Dia. #21-132 ₹2,85,710 Qty 6+ ₹2,57,294   Request Quote
  • Contact Us
    ×
Astronomy Bandpass Filter, Johnson-Bessel, Set of 50 x 50mm #21-138 ₹2,85,710 Qty 6+ ₹2,57,294   Request Quote
  • Contact Us
    ×

Related Products

 
Sales & Expert Advice
 
or view regional numbers
Easy-to-Use
QUOTE TOOL
enter stock numbers to begin