spectro-aras.com

Posted: **Sun Apr 25, 2021 4:19 pm**

A Star'Ex spectrum of comet C/2020 R4 on a 8-inch Newton reflector, taken the April 24.9, 2021:

The nucleus region spectrum profile (relative to a solar type star):

The coma spectrum:

Christian Buil

Posted: **Wed May 05, 2021 11:09 pm**

A spectrum from 2021-05-01 of the emission from the central coma and a cross-section of the distribution of CN,C2 and dust through the coma.

Comet C/2020 R4 (ATLAS) spectrum