[Shiraz (Ray)]

Originally Posted by glend

Very Smooth Ray! I like it. I need to order some LRGB filters.

thanks very much Glen - fun eh?

Originally Posted by rmuhlack

So a read noise of about 1.8-1.9 ? From my calcs based on this thread that would give a required sub time for your 250f4 of ~ 62-69secs, so an actual 60s sub sounds about right (on paper). Do you think you'll continue with these acquisition settings for future LRGB images ?

thanks Richard. While I try to work out the best way to treat the data, will continue with these settings, but the real interesting stuff will come with gain of 200 and above where 20 second subs will be optimal. Hope to gradually work up to that, but the sky will need to clear. Also want to try some NB some day.