Filters & Spectrums

Document showing desired wavelengths emitted from celestial objects, and undesired wavelengths emitted from light pollution sources:  Light_Pollution_Reduction_102808

Image showing effects of using light pollution filters.  Equivalent 4 minute exposures, one on left without Orion Skyglow Filter, one on right with Orion Skyglow Filter.

Light Polution Filter Demonstration: Left – without Orion Skyglow Filter, Right – with Orion Skyglow Filter

Measured Baader narrowband filters spectrums: Baader Narrowband Filters

Measured AT8RC telescope NIR spectrum: AT8RC Spectrum