Makarian's Chain in Ha

[jazzin]

I think this is going to be my next target and am wondering if it is worth collecting Ha data and RGB data for it or just go with RGB? Would like to get somebody's input who has imaged this already.

[STEVE333]

Hi Jazzin - I don't know the answer for sure, but, Markarian's Chain is a group of galaxies, and, galaxies are typically best imaged in RGB (or LRGB) because they are broadband sources. Usually only Nebulae benefit from Ha or other NB filters.

Steve

[Stuart]

Galaxies can sometimes be helped by addition of Ha. M101 and M51 are good examples. However, I don't know if the chain can be. Best thing to do, jazzin, is to take a single sub, stretch it and see if there is anything there.