Effect of astronomical filters - 02 May 2008
Test picture of NGC 7000 - no filter, UHC-S filter(Baader) and H alfa pass filter (Baader). This is result.
This picture is only converted from RAW format. It shows real untouched view of digital camera LCD. From left: no filter, UHC Baader filter, H alfa passfilter 45nm. For each frame was used 180s exposure at 1600 ISO with the same lenses.