C/2021 A1 (Leonard) observed after solar conjuction

Martin Masek

Dear all,

I observed the comet C/2021 A1 (Leonard) with the CTA-S1 FRAM (135mm f/2 lens + CCD) remotely near the Cerro Paranal. It seems, on images, the comet is without central condensation (can anyone to confirm it?). There are measurements with V and R photometric filters. Image in R filter (8×30s) is attached - https://udalosti.astro.cz/wp-content/Leonard_Paranal_FRAM_R-filter_20220223.jpg

C/2021 A1 (Leonard):
2022  Feb.  23.39  UT: m1=10.5 CCD-R, Dia.=2.8',  6.8-cm Camera lens , Tail: 9.9 min. in p.a. 112 deg.
[Comet Alt.:6.5 Calculated mags:11.8,11.8,11.9,12.0,11.9
] (Martin Mašek, near Cerro Paranal)

C/2021 A1 (Leonard):
2022  Feb.  23.39  UT: m1=11.0 CCD-V, Dia.=2.8',  6.8-cm Camera lens , Tail: 9.9 min. in p.a. 113 deg.
[Comet Alt.:6.4 Calculated mags:12.4,12.4,12.6,12.5,12.3
] (Martin Mašek, near Cerro Paranal)

Best regards,
Martin Mašek

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