Filter wheel without Lum which filter do you use instead for initial focusing?

Hi,

I have a filter wheel with 5 positions and the filters are R,G,B,Ha and OIII. Which filter would you use for initial focusing instead of Lum?

Thank you,

Miquel

I would suggest G since most cameras are more sensitive at those wavelengths.

1 Like

Thank you so much, I will do that

Agreed, green also often gives the smallest stars as well.

Thanks for validation