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ASI D21 AR Protect Window
ASI - ZWoptical
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ASI D21 AR Protect Window
ASI D21 AR Protect Window
Codice articolo: ZWO-D21AR
ASI D21 Clear Filter - protective window
This "filter" protects the sensor of your camera from dust and moisture, but preserves its spectral response very well.
With all-reflecting telescopes, IR radiation can be recorded without sacrificing sharpness, so this window is a good choice for not losing brightness.
Note: If you are using optics with refractive elements (like lenses), an IR blocking filter might be the better alternative.