SVBONY Telescope Filter UHC Filter Ultra High Contrast Filter EOS-C Clip-on for CCD Cameras & DSLR Reduce Light Pollution
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Features :
1.25 Inch this filter it can be used not only for celestial observations but also for astrophotography
Double sided multi layer coating with a broadband anti reflection coating on the back to reduce reflected light
Ultra thin filter cell minimize vignetting by maximize possible;0.1% transmission of off band specifically the major emission lines of artificial light pollution
Aerometal material precise CNC machining sand blasting CWL central wavelength no deviation affected by temperature change
Process black anodized finish extinction treatment to prevent reflection laser engraving no fading