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Table 1
Characteristics of spectral filters employed for the SAMPol observations.
| Filter | Central wavelength (μm) | Width (μm) | Observed source(s) |
|---|---|---|---|
| NB 1.04 | 1.040 | 0.015 | Betelgeuse/Aldebaran |
| NB 1.08 | 1.083 | 0.015 | Betelgeuse |
| NB 1.09 | 1.094 | 0.015 | Betelgeuse/Aldebaran |
| NB 1.24 | 1.237 | 0.015 | Betelgeuse/Aldebaran |
| NB 1.28 | 1.282 | 0.014 | Betelgeuse |
| NB 1.64 | 1.644 | 0.018 | Betelgeuse/Aldebaran |
| NB 1.75 | 1.748 | 0.026 | Betelgeuse/Aldebaran |
| NB 2.12 | 2.122 | 0.022 | Betelgeuse/Aldebaran |
| IB 2.30 | 2.30 | 0.06 | Betelgeuse/Aldebaran |
| IB 2.36 | 2.36 | 0.06 | Betelgeuse/Aldebaran |
| IB 2.42 | 2.42 | 0.06 | Betelgeuse/Aldebaran |
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