Astrodon Sloan Photometric u'2 50mm Square Telescope Filter

  • Sale
  • Regular price $550.00

More on the Way* We do not currently have this in stock, but is a common item we carry. More are likely on the way as the manufacturer allows.
Free Shipping
Add to Wishlist
Already have gear? Trade it in for cash or new equipment.

Accessories Added

OPT Telescope Expert

Want Help?

Ask Our Telescope Experts


Astrodon Sloan Photometric u'2 50mm Square Telescope Filter

The Sloan Digital Sky Survey photometric system is the most common research filter set used today. It was designed to include five mostly non-overlapping filters covering 300nm to 1100nm on the electromagnetic spectrum, which best matches the sensitivity range of digital sensors. 

Astrodon's U' photometric telescope filter, has a peak transmission of 90% and allows wavelengths between 320nm and 385nm to pass.

  • Spectral profile designed after Sloan Digital Sky Survey
  • Peak transmission guaranteed 90%
  • 1/4-wave propagated wavefront prior to coating
  • Parfocal with all Astrodon filters
  • Proudly made in the U.S.A.


  • Photometric U' Telescope Filter


Filter Thickness3mm
Filter TypeSloan
Free ShippingYes