Hi Martin,
Thank you. Yes you're 100% right. I was deciding if I should write 30 arc seconds or about half an arc minute and I ended up writing a combination of the two ! Yes, so my PA was only half an minute. I normally get it down to about 8-10 seconds then guide. As I've said though, I've got no guider setup for the 9.25 yet which is why I don't image with it normally.
Cheers
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