sodium tail ?

#584165
Robin Leadbeater
Participant

Hi Derek,

What date was this ?  Objective grating setups showed a nice little sodium coma and tail.

My early example on 7th July

https://britastro.org/comment/8806#comment-8806

and a better one a few days later by Mike Harlow

https://britastro.org/comment/8832#comment-8832

but the sodium dropped in intensity after that and was lost in low resolution spectra around 22nd July

Cheers

Robin