› Forums › Comets › C/2020 F3 (NEOWISE) › Sodium
11 July 2020 at 8:34 pm
#582777
![](https://britastro.org/wp-content/uploads/2019/04/picture-14-1555163046-80x80.jpg)
Participant
Robin, this is a very active and probably quite large nucleus that has been strongly heated through perihelion so it would be worth searching for a possible sodium tail. I don’t have a suitable filter (all mine are designed to block Na D!) but a good challenge for others.