Used Radian Triad Tri-Band Narrowband Filter (2'')

SKU: U2405-SB-Triad-2

  • Sale
  • $399.95
  • Regular price $658.75

Yes, our inventory is accurate!

Qualifies for Free Ground Economy Shipping (CONUS Only)

Not Returnable Please note that used items are not returnable.

This is a 2" Triad Tri-Band Filter in excellent condition.  This is the Triad-TC2.   It comes in its original jewel box.  



Dealing with light pollution is the biggest challenge for astrophotographers. Until now taking narrowband color images involved the complexity and high cost of upgrading your camera with a filter wheel, 3 or more filters, adapters, and software. Now there is a more affordable all new option that delivers dramatic detailed images even in bright settings.

Triad is a revolutionary multi-band filter technology that passes only H-alpha, H-beta, and Oxygen III emission lines enabling any color camera to now capture RGB narrowband images. It’s an affordable single-filter option guaranteed to dramatically reduce light pollution and increase your signal even in bright urban and moonlight settings.

Engineered specifically for use with DSLR, CMOS, and CCD color cameras, Triad features advanced multi-coatings and extreme tolerance glass, making it the most consistent and accurate light pollution suppression filter available. 100% American made.

The Triad 2-inch filter is housed in a 7mm tall ring, with 5mm height above the threads. The ring wall thickness is between 1.3 and 2.58mm - depending on production batch. Please double check to make sure this will fit your filter wheel or accessories.


  • Specifications

    Bandpass 3nm
    Filter Shape Round
    Filter Thickness 3mm
    Filter Type Light Pollution/City Light Suppression
    Free Shipping Yes
    Size 2"