Nebula emission type

[bomberbaz]

I know that various Nebula emit light depending on what the ionised gas type is (eg O-III) but where do you find out what emits what? Does anyone have any online references I can make a use of.

I am going to a dark site tomorrow weather being up to it, and I have in mind to get the Owl Nebula (believe this benefits from O-III) and also triffid and lagoon later on.

TIA folks

Steve/Baz

[bomberbaz]

Maybe I should have been more specific and asked about emission nebula. From what I gather (happy to be corrected btw) the majority of nebula (emission) are hydrogen type. But does anyone know of a reference site or similar where I can find out more information....

tia again, steve

[mallorcasaint]

If you have an android phone or tablet then Mobile Observatory is a great app.

[Scott]

http://www.cloudynights.com/item.php?item_id=1520#top

Not sure if this is the sort of thing you're after

[bomberbaz]

http://www.cloudynig...tem_id=1520#top

Not sure if this is the sort of thing you're after

auspom, thats Bang on and bookmarked. Great reference and thanks for that, I shall make use later. Not sure if its 100% reliable of course but excellent starting point.......