SVBONY SV164 Dark Filter for CCD and CMOS Cameras
- 2-inch Filter Size
- Standard M48x0.75 Threads
- Enables Automated Dark Frame Capture
- 1mm Filter Thickness
- Durable Anodized Aluminum Cell
The SVBONY SV164 Dark Filter for CCDs Camera 2 inch simplifies calibration by integrating directly into your 2-inch filter wheel or drawer with standard M48x0.75 threads. This 1mm thick filter provides a perfectly opaque surface, allowing you to automate dark frame acquisition without ever touching your telescope cap.
A dark filter is a fundamental tool for serious imagers, enabling the automated capture of dark frames—essential for removing thermal noise from your images. By placing the SV164 in a filter wheel, you can program your acquisition software to capture darks at the end of a session without manual intervention. The standard 1mm thickness helps maintain consistent focus across your filter set.
While capping your telescope is a free alternative, it introduces variables that a dedicated dark filter eliminates. Manually placing a cap risks bumping the telescope, altering focus or pointing, and can suffer from light leaks. A remote observatory makes manual capping impossible.
The SVBONY SV164 filter threads securely into your imaging train with its M48x0.75 interface, creating a perfectly light-tight seal every time. This guarantees consistent, high-quality dark frames and enables you to capture them at the correct sensor temperature throughout the night, dramatically improving your final image quality by ensuring your calibration data is a perfect match for your light frames.
The SVBONY SV164 is a specialized, completely opaque filter used for taking dark frames. These are critical calibration files that record the thermal noise generated by your camera's sensor. By subtracting this noise pattern from your light frames (your actual images), you can significantly clean up your final astrophoto.
By installing the SV164 in a 2-inch filter wheel or drawer, you can automate the process of taking dark frames. Instead of manually going to your telescope to put the lens cap on at the end of a session, your imaging software can simply switch to the dark filter and begin capturing calibration frames immediately, saving time and effort.
No. The SV164 is a dark frame filter, meaning it is completely opaque and blocks all light. It is a tool for camera calibration only and cannot be used for visual observation or for imaging celestial objects.
A 2-inch filter is necessary if you are using a camera with a large sensor (such as APS-C or full-frame) or a 2-inch filter wheel to avoid vignetting. The larger M48x0.75 threads and filter diameter match the rest of your 2-inch imaging train, ensuring the entire sensor is covered.
With the SV164 in your filter wheel, you can program your software to automatically switch to the dark filter and begin taking dark frames the moment your M31 sequence ends. This means you can be asleep while your rig correctly captures temperature-matched calibration frames, ensuring the highest quality data without any manual effort.
Yes. The SVBONY SV164 uses standard M48x0.75 threads and is housed in a standard 2-inch filter cell. It is compatible with virtually all 2-inch filter wheels and filter drawers from brands like ZWO, QHY, Atik, and others.
| Brand | SVBONY |
| Size | 2 inch |
| Filter Type | Dark Frame Imaging Filter |
| Thread Type | M48x0.75 (2") |
| Thickness | 1mm |
SV164 Dark Filter - 2 inch
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