Ha filter with modded dslr. 7nm or 12nm?
Hi Stargazers,
I am thinking of getting an Ha filter so I can image during moonlight and also start producing some HaRGB images. I don't use a laptop and currently use either the dslr live view screen or plugged in phone screen to focus and frame the image (with bhatinov mask).
My question is, will it be possible to still focus in the same way with an Ha filter attached? Also, I understand that a 7nm filter lets through less light than the 12nm, but is it enough to allow me to manuall
To be honest, I was surprised to discover that, on my camera at least, the G and B channels pick up a surprising amount of Ha. The camera is quite brutally cooled though. I tried one shot at processing all three and it seemed less noisy but less detailed. All processed using super pixel mode & stretch in DSS, just split to RGB in paint Shop Pro:
Red:
Green:
Blue: