[jasonh]

Hi All, A bit of a continuation of my last question.

I need to get a new Ha filter, I am looking at custom scientific who have a 4.5nm and a 10nm.

I wonder if 10nm is too wide? I currently have a 7nm and am happy but it wont go in the stl11000. Astrodon is a jump up in price but could be more of a sweetspot at 6nm.

Anyway, the stl11k is self guided, does anyone have experience or success using a 4.5nm with the self guided cameras. Is it letting enough light through to aquire a guide star?

I will be using it initially with a tak fsq and then later with a 12.5" RC. When I get to that point I will have two scopes so can I use the other to guide. In the meantime, with only one scope, do you think the stl11k will have too hard a time guiding through the 4.5?

Thanks,
Jason