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David Perkin

2020 Oct 5
2019 Jul 30
11:48 UTC
The three spectra show the ALPY giving good performance on the sun (i.e.cloud) on 28th but today the spectra are very slanted. I have no idea why or how to correct it. In between I have experimented with fitting the Calibration Module but have not dismantled or dropped the spectrograph unit.
2018 Jan 21
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