Please use another browser such as Chrome, Edge, Firefox, or Safari for the best experience

Skip to content ZWO AM5 & AM3 $300 Off

Optolong L-eNhance Light Pollution Dual-Bandpass 2" Imaging Filter

(10+ Available)
Free shipping

Add Apertura Air Blower for Lens Cleaning to your order


Optolong L-eNhance Dual Band Pass Imaging Filter - 2” Mounted

The Optolong L-eNhance filter was designed especially for color CMOS/CCD and DSLR cameras. The special characteristics of the L-eNhance allows amateur astronomers to get great results when imaging, even in urban skies degraded by heavy light-pollution, with just one filter!

The L-eNhance optimized dual-band filter significantly blocks light pollution while allowing up to 90% transmission of H-Alpha, H-Beta and Oxygen III emission lines.

As you can see from the specifications below and the transmission curve chart to your left, Optolong designed this dual-band pass filter to retain the prominent colors of nebulae in RGB while blocking out most wavelengths of light pollution. This multi-purpose imaging light pollution filter even allows for SHO Hubble palette simulation with a few tweaks with your image processing software.

Optolong L-eNhance Filter Specifications

  • Blocking Range: 300nm - 1000nm
  • Blocking Depth: >99% light pollution line
  • TPeak: T>90%
  • Substrate: B270
  • Thickness: 1.85mm
  • Surface Quality: 60/40
  • Transmitted Wavefront RMS: λ /4
  • Parallelism (arcsec): 30s