Optolong
UHC Filter 1.25"
UHC Filter 1.25"
Couldn't load pickup availability
Ultra High Contrast Light Pollution Filter 1.25"
The UHC (Ultra High Contrast) broadband filter is designed to improve the visibility of various deep sky objects. By selectively reducing the transmission of wavelengths of light pollutants, specifically those produced by artificial lightings including mercury vapor lamps, both high & low pressure sodium vapor lights and the unwanted natural light caused by neutral oxygen emission in our atmosphere (i.e. skyglow).
Main Use and Performance
- Suitable for color CCD cameras and unmodified DSLRs
- UHC with narrower passband provides higher contrast than CLS. Thus it is more suitable for urban environment where you suffer from severe light pollution.
- UHC has a substantial red passband and offer superb views for objects like the Orion Nebula (M42)
- Light pollution filters do not eliminate the effects of light pollution or increase the object's brightness. In many cases, they increase the contrast between nebula and night sky, not brightening the nebula.
Format
This filter is sized to fit 1.25" eyepieces.
For a comparison and review of the light pollution filters see
Amit Kamble's Comparison
Share
I bought the UHC Filter and picked up the order from Astronz office. I spent some time at the office and with Andrew. It was a delightful time to share our experience. I used the filter for several nights for observation. I took photos with my smartphone with the filter; the result is impressive, though not professional.