Home › Forums › Comets › Comet C/2020 R4 ATLAS developing features › extent of CN
1 May 2021 at 2:09 pm #584153
Here is the approximate extent of the spectrograph slit superimposed on Denis’s image.
The CN emission is actually much more intense than the raw spectrum image suggests as the spectrograph sensitivity is low in the UV. The comet would look pretty spectacular in a narrow band CN filter !