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Table 1 Spectrometer wavelength bands

From: Universat-SOCRAT multi-satellite project to study TLEs and TGFs

# Wavelength (nm) Comment
1. 240–400 UFS1, UFS2, KS11 filters for comparison with MSU experiments (Tatiana-1, Tataina-2, and Vernov)
2. 270–380  
3. >  600  
4. 762.7 TLE marker—atomic oxygen absorption line
5. 777.4 Lightning marker—the brightest line in lightning spectrum, used for lightning detection in LIS ((Orville and Henderson 1984)) and convergence ((Sharkov et al. 2018)) experiments
6. 500.1 Lightning marker—bright line in lightning spectrum and absent in sprite spectrum ((Milikh et al. 1998))
7. 337 N22P line—marker of low latitude and should absent in lightning spectrum due to ISUAL data
8. 391.4 N\(_{2}^{+}\)1N—line of ionized atomic nitrogen
9. 427.8 N\(_{2}^{+}\)1N present in aurora light and marker of ionization source (energetic charge particle flow)
10. 470.9  
11. 690 Meinel band—marker of high latitude and high energy of electrons involved into the process
12. 388.3 Cyanogen (CN) emission, a spectral signature of lightning flashes with continuing current (monitoring of lightning that can cause forest fires ((Christian et al. 1983; Fuquay et al. 1967)).
13. 294 Signature of extremely high altitude event (lines of N2(VK) system)
14. 313  
15. 399.8 N22P(1,4) analyzed by (Armstrong et al. 2000), in comparison to 427.8 nm and 470.9 nm lines
16. Without filter Total emission of lightning or TLE measurements