Apart From Air Turbulence, The Brightening Of The Night Sky Is The Greatest Barrier To Observing Faint Objects Beyond The Solar System. Due To Streetlamps And Other Artificial Lighting The Sky In Urban Areas Is No Longer Properly Black. As A Result, The Contrast And Thus The Perception Of Deep-Sky Objects Also Suffer. However, Depending On The Type Of Celestial Object, It Is Possible To Filter Out Some Of The Interfering Light Making It Easier To Photograph The Objects.
The Explore Scientific H-Alpha Filter Uses The Characteristic Of The So-Called Emission Nebulae. These Objects Glow In Certain Colors, The So-Called Emission Lines. The Emission Lines Are Associated With Certain Chemical Elements – In This Case The Red Glowing Hydrogen. This Filter Blocks All Other Colors (And Therefore Almost All Artificial Light) And Lets Only The Emission Lines Of Hydrogen Through. Especially The Disturbing Light Of Mercury And Sodium Vapor Lamps Is Effectively Blocked. The Effect Is Amazing: Suddenly, Nebulae Become Visible On The Photos In Places Which Appear Completely Empty Without The Filter.
The Explore Scientific H-Alpha Nebula Filter Has Been Developed Exclusively For Astrophotography. Especially In Heavy Light-Polluted Skies Many Emission Nebulae Are Only Visible And Shown In Full Expanse On Astrophotos When Using This Filter. The H-Alpha Nebula Filters Make Astrophotography Near The City Possible And The Use Leads To Amazingly Good Image Results Despite The Existing Light Pollution. A Must For Every Urban Astrophotographer.
The Explore Scientific Nebula Filters Are Delivered With An Individual Test Report – So You Can Be Sure To Get High Quality Filters.
Bresser Explore Scientific 1.25″ H-Alpha Nebula Filter 7Nm Hot
£139.92 £77.16
Bresser Explore Scientific 1.25″ H-Alpha Nebula Filter 7Nm Hot
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