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Optolong Filter Comparision

Here's a cool comparison with a HyperStar C9.25 using no filter, a L-Pro Light Pollution Filter, and the new L-eNhance Filter from Optolong. The L-Pro has a 53% reduction of background light, and the L-eNhance has an amazing 91% reduction.



Scott Tucker L-Enhance Filter

  • Imaging Target: Rosette Nebula
  • Camera : ZWO ASI294MC Pro
  • Lens : HyperStar C9.25
  • Filter : Optolong L-eNhance
  • Exp time : 20 x 120"
  • Taken by Starizona's: Scott Tucker
Scott Tucker L-Enhance Filter

    Taken with 98.63% full moon

  • Imaging Target: North America and Pelican Nebulas
  • Camera : ZWO ASI294MC Pro
  • Lens : Samyang 135mm f/2
  • Filter : Optolong L-eNhance
  • Exp time : 20 x 60"
  • Taken by Starizona's: Scott Tucker


  • Imaging Target: North American Nebula
  • Camera : ZWO ASI183MC Pro
  • Lens : HyperStar C6
  • Filter : Optolong L-eNhance
  • Exp time : 60 x 45"
  • Taken by Starizona's: Steven Koenig
VSR300 11

  • Imaging Target: Vela Supernova Remnant
  • Camera : CentralDS Astro A7s (cooled at -2C)
  • Lens : Canon EF 300mm f/4L (non-IS)
  • Filter : Optolong L-eNhance
  • ISO : 6400
  • Tracker : Star Adventurer
  • Autoguide : none
  • Exp time : 1min X 81frames w Dark, Bias frames
  • Offered by Optolong co-photographer Vincent Cheng



After a simple red structure transformation, the effect of SHO Hubble color can also be simulated. !



  • Substrate:B270
  • Thickness:1.85mm
  • Tpeak:T>90%
  • Blocking range:300-1000nm
  • Blocking depth:light pollution line blocking >99%
  • Surface quality:60/40
  • Transmitted Wavefront RMS:λ/4
  • Parallelism (arcsec):30s