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comet and spectroscopic observations on 7 oct.

During this clear evening with reasonable transparency, I was able to observe a few comets with the Orion Optics 0.4-m f/3.8 telescope: 29P, 107P, 186P, 431P, C/2017 K2, C/2019 U5, C/2020 PV6, C/2021 E3 and a possible comet, mentioned on the PCCP and could be detected. With the C11 + spectrograph LHiResIII, i ttok a spectrum of several stars for H-alpha detail: 13 Tau, 25 Peg, 31 Peg, bet Psc, kap Aql, pi Aqr.

new comet C/2021 S1 (ATLAS) on 29 sept.

A. Fitzsimmons reports the discovery of a comet in four 30-second survey images taken on Sep. 27 UT by ATLAS-HKO (T05), noting a condensed 9″ coma.  
While this object was still mentioned on the PCCP, we could observe this object with the Telescope.Live 0.7-m f/8 Ritchey-Chretien in Oria, Spain, and confirm the cometary features of this object. Later was this object assigned as comet C/2016 S1 (ATLAS) via M.P.E.C. 2021-T21, issued on 2021 oct. 3th.