The blue/blue green light is totally blocked. The contrast between the card and the lighter zones will enormously increase. This is truly helpful when you watch Jupiter or Saturn. Or for mars, watching the poles.
Color Filters darken the light slightly, that reaches the eye or the sensor of the camera. This eliminates for instance stronger transitions. The result is that your picture turns out with more contrast which automatically shows more details.
The kit includes:
|Optics material||optical glass|
|Optics coating||multicoated, anti-reflective|
|Eyepiece barrel diameter||1.25" (31.7mm)|