Hydrogen Alpha imaging - Best targets?

[swag72]

I'm sorry if this has already been covered - I think I have seen it somewhere before - but I can't find it.

I have a Ha filter now for my DSLR and am in the process of drawing up my imaging list for the next couple of months or so. My question is what is Ha best used for? Obviously it looks good with nebula, but would, say galaxies, benefit from it? Or are there some things that it is just a waste of time using Ha for?

[steppenwolf]

I'd concentrate on nebulae and in particular have a good look at NGC7000 in Cygnus as she comes around.

[swag72]

Does nothing other than nebula really benefit from the Ha imaging then Steve?

[shaunster]

Does nothing other than nebula really benefit from the Ha imaging then Steve?

Many galaxies benefit a lot from Ha

[steppenwolf]

Some other objects do benefit from Ha, for example the star forming regions of many galaxies but emission nebulae (of which there are numerous) always respond well.

[ollypenrice]

Ha picks up ionized hydrogen, by definition. Here is an extreme example of 'with and without' Ha;

Wherever stars are being formed, whether within the Milky Way or in remote galaxies, Ha will have something to say. The effect is most dramatic in Milky Way nebulae because they are nearer and bigger on the sky. Pelican, N America, Heart and Soul, NGC1396, Eagle, Swan, Lagoon, Trifid, Cone, Rosette

When adding Ha to galaxies I find you neeed a lot to make itself properly seen above the basic red level, though M33 sings loudly in Ha quite quickly.

Olly

[swag72]

Brilliant folks - Thank you. Just need the clouds to clear now!! Hope that the problems I had prior to my UK visit was down to trying to guide at the zenith!!