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The SV164 Dark Frame Filter is designed to block all incoming light, allowing you to quickly capture dark frames for calibration. Dark frames help reduce sensor noise, amp glow, and hot pixels, ensuring cleaner stacked images in astrophotography.
Instead of covering your telescope or removing the camera, simply rotate or slide in the SV164 filter to take dark frames anytime — even during an imaging session. This is especially helpful when temperature conditions change throughout the night.





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