SVBONY 2" CLS Broadband Telescope Filter
2" CLS broadband telescope filter reduces city lights for better deep-sky viewing and photography. Useful for color CCDs and unmodified DSLRs; performance can vary by setup, with some users noting fit issues
Highlights
- high pass-band transmission
- coating stability across temperature
Pros
- reduces urban light pollution
- high transmission in main nebula lines
- durable coating technology
Cons
- fit and installation issues reported
- loose clips and loose fit
- mixed opinions on effectiveness
Best For
Features
- Ion-assisted deposition coating provides durability and scratch resistance with stable central wavelength across temperature changes
- Precision-coated passband transmission and off-band optical density through a planetary rotation system
- Around 90% transmission for main nebula emission lines including Ha 656nm, OIII 496nm, SII 672nm, H-beta 486nm
- Compatible with color CCD cameras and unmodified DSLRs for urban use, improving contrast by suppressing city light
