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Starizona Variable M48 T-Threaded Adapter 30-40mm
The Starizona Variable M48 T-Threaded Adapter provides a continuous adjustment range from 30mm to 40mm, delivering a precise solution for setting back focus in an astrophotography setup. With standard M48 threads, this single component replaces an entire collection of fixed-length spacers, allowing you to dial in the exact distance your corrector and camera require.
Achieving Critical Back Focus from 30mm to 40mm
Setting the correct distance between a field flattener or reducer and the camera sensor is essential for achieving sharp stars across the entire image. This variable adapter allows for minute adjustments anywhere between 30mm and 40mm. Instead of stacking spacers and hoping for a close-enough result, you can make fine adjustments to perfectly match your optical train's requirements, correcting for field curvature and ensuring optimal performance from your corrector.
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How can the Starizona Variable M48 Adapter help connect my M48 flattener to my camera?
It acts as an adjustable M48-threaded spacer. This allows you to precisely set the critical distance between your flattener and camera sensor, which is necessary for achieving a flat field with sharp stars to the edge. This specific adapter covers any spacing requirement between 30mm and 40mm.
My corrector requires 55mm of back focus, but my camera and filter wheel only use 20mm. Can the Starizona Variable Adapter (30-40mm) help?
Yes. In this scenario, you need to add 35mm of spacing (55mm - 20mm = 35mm). This adapter's range of 30mm to 40mm covers that 35mm requirement perfectly, allowing you to fine-tune the distance for optimal correction.
Are other adjustment ranges available for the Starizona M48 Variable Adapter?
Yes, Starizona also offers other versions of this adapter to cover different spacing needs, including a 15-20mm and a 20-30mm model.
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| Thread |
M48 |
| Adjustable Length |
30mm - 40mm |
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Starizona Variable M48 T-Threaded Adapter (30-40mm)
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Starizona Warranty
