Yet another Star Analyser spectrum (SA-100) at low dispersion (11.9 A/pixel) recorded 05/01/2022 near maximum light at 12.4 mag with a DSLR (Canon 450 Da) and a VIXEN 5'' Newton. The typical SN Ia Si II absorption trough was well visible:
A comparison with a ProAm spectrum from the BAA database shows a good agreement:
In the NIR even the high velocity Calcium triplet was apparently detectable.
The reference spectrum was recorded by Pro Am Jaroslaw Grzegorzek who has developed an impressive supernova search programme with remarkable success: http://spectroscopy.pl/index.html
Unfortunately, he abandoned his efforts recently: http://spectroscopy....asadnienie.html
I can understand his decision. Even the ancient Romans knew that the spirit of discovery is nourished by fame:
"Quippe gloria industria alitur; ubi eam dempseris ipsa per se virtus amara atque aspera est." (Sallust)
In fact, diligence is nourished by glory; when you take that away, virtue itself, on its own, is bitter and harsh.