Shelyak Adapter set for Lhires III (camera with 25mm backfocus)
- Compatibility: Shelyak Lhires III Spectroscope
- Required Camera Backfocus: 23.35mm to 27.35mm
- Ensures Precise Sensor-to-Optics Spacing
- Critical for High-Resolution Spectroscopy
This adapter set for the Shelyak Lhires III spectroscope provides the precise mechanical connection for cameras that require a backfocus between 23.35mm and 27.35mm, ensuring the sensor is positioned correctly at the focal plane for high-resolution spectroscopy.
In spectroscopy, achieving perfect focus is paramount. This adapter set is engineered to solve the specific backfocus challenge for cameras in the 23.35mm to 27.35mm range, positioning the sensor precisely where the Lhires III forms its spectrum. This specificity is its strength, but also its limitation: it is not a universal adapter and will only work for cameras within this exact window.
This adapter set is designed for any camera, typically a CCD or CMOS model, that has a native backfocus distance between 23.35mm and 27.35mm. You must check your camera's technical specifications to confirm its backfocus before purchasing this adapter.
The Shelyak Lhires III spectroscope has a fixed focal plane where the spectrum is formed. This adapter ensures the camera's sensor is placed exactly at that plane. Incorrect spacing results in a defocused spectrum, which blurs spectral lines and makes the data unusable for scientific analysis.
No, this adapter set is not suitable for cameras outside the specified 23.35mm to 27.35mm backfocus range. Using it would prevent you from reaching proper focus. Shelyak offers different adapter sets for cameras with other backfocus requirements.
Yes, absolutely. A camera with a 25mm backfocus falls perfectly within the 23.35mm to 27.35mm range of this adapter set. It will provide the correct spacing to achieve a sharp, high-resolution spectrum of bright stars like Vega with your Lhires III.
By ensuring your camera sensor is perfectly focused, this adapter allows the Lhires III to resolve fine details within the H-alpha emission profile. Precise focus is critical for detecting subtle Doppler shifts or structural changes in the emission line, which would be lost with incorrect spacing.
This adapter set provides the correct backfocus spacing. However, you must also ensure that your camera's body has the appropriate mechanical threads to connect to the adapter itself. Please verify the thread type on both your camera and the Lhires III's output before assembly.
| Compatibility | Shelyak Lhires III Spectroscope |
| Required Camera Backfocus | 23.35mm to 27.35mm |
Adapter set for Lhires III (25mm Backfocus)
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