ALSTAR 2" Moon/Skyglow Filter Enhancing Effect Astrophotography Neodymium Glass Blue, Purple
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Description
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By rejecting most other light this will cause certain objects to appear more clearly against a blacker background of space Very high light transmission exceeding ninety five percent of that light some the portions of the spectrum; while blocking unwanted skyglow and many street light emissions It enhances contrast of all reddish details and so this filter can also be used for planetary viewing; as well as of blue details The filter is made with a special Neodymium glass that effectively filters out selective wavelengths of low pressure sodium and other man made sources typically used in street lighting The Moon and Skyglow is a multi bandpass filter transmitting a high percentage of light in the visual spectrum
Description
(1)
By rejecting most other light this will cause certain objects to appear more clearly against a blacker background of space Very high light transmission exceeding ninety five percent of that light some the portions of the spectrum; while blocking unwanted skyglow and many street light emissions It enhances contrast of all reddish details and so this filter can also be used for planetary viewing; as well as of blue details The filter is made with a special Neodymium glass that effectively filters out selective wavelengths of low pressure sodium and other man made sources typically used in street lighting The Moon and Skyglow is a multi bandpass filter transmitting a high percentage of light in the visual spectrum
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