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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.
- 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
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
- 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