Follow-up Observations of Comet C/2022 E3
ATel #15876; M. Mugrauer
on 29 Jan 2023; 23:01 UT
Credential Certification: Markus Mugrauer (markus@astro.uni-jena.de)
Comet C/2022 E3 was observed at the University Observatory Jena on 19 and 29 January 2023. In order to follow the orbital motion of the comet, to measure its apparent brightness, and to study its morphology, several images of C/2022 E3 were taken in the R-band with the CCD-camera CTK-II, which is operated at the 25cm Cassegrain telescope of the observatory. Furthermore, in the same nights spectroscopic observations of the coma of the comet were carried out with the Échelle spectrograph FLECHAS, which is installed at the 90cm telescope of the observatory. On 19 January 2023 three spectra of the comet, each with an integration time of 300s were taken. On 29 January 2023 five 900s spectra of the comet were taken. In both observing epochs FLECHAS was used in its 2x2 binning mode (R~7400). During the spectroscopy of C/2022 E3 the telescope was automatically tracked on the center of the coma of the comet. In the fully reduced FLECHAS spectra of the comet many emission lines of NH2, C2, and [OI] are detected in the wavelength range between 5000 and 7000Å. The spectral lines were used to measure the radial velocity of comet C/2022 E3 relative to the observing site, which is -46.9±0.4km/s, and -23.0±0.7km/s during the observations (19 January 2023 03:44UT, and 29 January 2023 01:03UT).
Follow-Up Observations of Comet C/2022 E3 - Online Data
