- 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
- 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