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.
Measured Baader narrowband filters spectrums: Baader Narrowband Filters
Measured AT8RC telescope NIR spectrum: AT8RC Spectrum