Bresser Explore Scientific 2″ S-Ii Nebula Filter 12Nm Best

​One Of The Most Important Obstacles For The Exploration Of The Night Sky Is The Brightening Of The Night Sky By Artificial Lighting, Such As Streetlights. The Night Sky Is Not Really Dark In The Vicinity Of Towns Or Cities, Which Reduces The Visibility Of Objects Beyond The Solar System Enormously. Depending On The Type Of Celestial Object, It Is Possible To Increase The Contrast Dramatically By Blocking The Interfering Artificial Light.