Apologies if this is a silly query, kind of a newbie here.
The MSI central wavelength for band 8 (NIR) is either 832.8 nm for S2A and 832.9 for S2B (https://earth.esa.int/web/sentinel/technical-guides/sentinel-2-msi/msi-instrument)
or 835.1 for S2A and 833 for S2B (https://sentinel.esa.int/web/sentinel/missions/sentinel-2/instrument-payload/resolution-and-swath), with varying bandwidths, depending on where you look. Can someone please confirm that the first source/wavelengths are the correct ones?
The product central wavelength for band 8 is 842 nm (https://earth.esa.int/web/sentinel/technical-guides/sentinel-2-msi/performance). How is this difference in wavelengths explained? Is this due to spectral response functions? I can understand the difference between MSI and product central wavelengths in bands 11 and 12 for example, since there is some difference between S2A and S2B wavelengths.