Why there is not Spectrum view after mosaic sentinel 2 images in SNAP

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I am working on 3 sheets of sentinel 2 images. After mosaic the sheets in SNAP by multi size mosaic, there is not the spectrum view for the new file. Is it related to Metadata file that is not transferred from the original images?

Another issue, Which one done firstly, the atmospheric correction or mosaicing?

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That’s a known issue. https://senbox.atlassian.net/browse/SNAP-745
You can add the wavelength afterwards.
Right-click on the band and select properties. There you can specify the wavelength

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Hi Marpet,
Thanks for replying, I add the wavelength and the problem was solved.
Kind regards,

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Hi, is it possible to load the wavelengths from a text/csv file or alternatively save the properties of all bands for a later use so that I don’t have to manually insert the wavelengths every time?

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The Wavelength Editor in the EOMasters Toolbox Basic is the best option at the moment.
https://step.esa.int/main/wp-content/help/?version=10.0.0&helpid=eomtbx.wvlEditor
You can save the values in an Excel file and copy them into the editor.
After the modification you have the option to apply the changes to other compatible products which are currently open.

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