Feature

●The 7nm dual-band filter is designed to dramatically reduce the effect of light pollution; high transmission and sharp cutouts greatly improve contrast and bring the most detailed information in imaging emission nebulae; planetary nebulae; and supernovae residues; the 7nm bandwidth means that it can greatly reduce the emissions of the nebulae in H-alpha (red) and OIII (green) 1999
●No need to travel through mountains and rivers; You can enjoy the fun of Deep Sky photography anytime and anywhere in urban areas; The dual band filter helps astronomy enthusiasts perform deep sky photography in urban areas with serious light pollution or under full moon
●Lower the threshold for astronomical work; the dual band filter makes it possible to simplify and decrease difficulty and cumbersome post-processing for users
●Compared to traditional black and white photographs, additional accessories and complex post-processing are required; dual band filter can achieve a single exposure to take large full-color images
●An ideal filter for use with One-Shot-Color (OSC); CMOS cameras and astronomical telescopes whose burning ratio is not less than F5


Description

1. The 7nm dual band filter is designed to dramatically reduce the effect of light pollution; high transmission and sharp cut-outs improve contrast and bring out the most detailed information in imaging emission nebula, planet nebula, and supernovae remnants; the 7nm bandwidth means that he is Emissions of the fog strongly insulated in H-alpha (red) and OIII (green-blue) 2. No need to travel. Through mountains and rivers, you can enjoy the fun of deep sky photography anytime and anywhere in urban areas; the dual band filter helps astronomy fans perform deepsky photography in urban areas with serious light pollution or under full moon. 3. Lower the threshold for astronomical work, the dual band filter makes it possible to simplify the difficulty and cumbersome after replica. Processing for users 4. Compared with traditional black and white photography, additional accessories and complex post-processing are required; dual band filter can achieve a single exposure to take large full-color images. 5. An ideal filter for use with DSLRs, one-shot colours (OSC), monochrome CCD and CMOS cameras and astronomical telescopes whose burning ratio is no less than F5.