Quote:
Originally Posted by strongmanmike
Not a bad galaxy shot that Peter  It's a great spiral too.
It can be worthwhile hitting OIII on a few of the closest galaxies, obviously LMC/SMC but also Barnards galaxy and NGC 300 and M101 also come to mind but generally you will get nothing much to nil, especially beyond our local group. Ha on the other hand, well it can be collected quite successfully from lots of galaxies and used to enhance the HII regions, out to perhaps around 60 Million light years or so..? After that the Ha line gets red shifted out of most narrowband filters anyway so using them will do nothing.
LHaRGB combo's are worth trying on many galaxies
Mike |
Most interesting info Mike.
I had a crack at NGC300 and your right, there were many nebulas? rich in OIII.
As an aside, yesterday NGC2997 was image of the day at Astrobin.
It made my attempt look very pale indeed.
However to be fare, this chap was using a RDK700 (scope the size of a small car).