Re: [CFDS] filters

[Jan Hollan <jhollan@amper....muni.cz>]

just one link with very nice images, inspiration for spectral calibration,
and an example of didymium filtering:

             wpo-spectroscope tests deepsky/OIII filters
        URL: http://home.freeuk.com/m.gavin/grism2.htm


jenik






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