Horsehead Nebula

[Mac]

40x180 seconds L-enhance ASI533MC - ED102 - Celestron AVX

No Moon, lights only

[yobbo89]

very nice, i see the h-beta data is in there.

[Mac]

very nice, i see the h-beta data is in there.

Thanks Yobbo... what part is the H-beta ?

[Mac]

It was cropped from this capture and it was hard to tame Alnitak.

[yobbo89]

Generaly h-beta emits near the same line as h-alpha especially on the horse head and the head itself.. But the blue nebula below emits h-beta and oiii and in your image it particularly seems to have alot of signal, more then what oiii has to offer. It seems H-beta dosn't hang around for long and is only present in a few targets.. M42 is another hbeta target.

Well I say, hbeta emits in the same area as h alpha and is dimmer but for some reason on little blue nebula below there is alot h beta signal..

Hbeta makes a good visual filter because it's in the colour spectrum our eyes are more sensitive to and it hangs around h alpha thus giving same/simular details such as the horse itself in the horse head nebula.. Imaging results will vary upon target..

[Juno16]

Another fine image!

Nice work Steve!

[MariusD69]

Awesome! Well done, Steve!

[BABOafrica]

Beautiful image and thanks to yobbo89 for the explanation.

BABO

[yobbo89]

It was cropped from this capture and it was hard to tame Alnitak.

the full frame is actully pretty good, a well done alnitak, i have an image some where and the halo goes over the horshead and with a diferection spike all the way through .. lol