9 November 2017 at 6:46 am
#578739
![](https://britastro.org/wp-content/uploads/2021/02/picture-7761-1614033711-80x80.jpg)
Participant
Thanks Nick. The software looks really useful. I noted there was a long smudge just below as well, so it does make one a bit doubtful! I’ll try to get multiple stacks as you suggest, and then blink them. David