The SV220 dual band filter reduces light pollution and improves contrast for imaging nebulae.
Quickly capture dark frames to optimize photo quality; SV164 filter blocks all light from imaging camera sensors; help remedy camera noise and hot pixels; especially to ensure high-quality pictures in astrophotography
For deep sky photography; use the dual-band filter to enable deep-sky photography in light-polluted cities or under a full moon
Various combinations; for example; the thread of the SV164 dark frame imagin filter can be directly connected to the filter wheel; Allows you to quickly switch between different filters; very convenient
2 inch standard filter; SV164 dark frame imagin filter size is 2 inches; you can freely match all your equipment that accept standard 2 inch filter