Hello group,

here is the Triangulum Galaxy M33 in hydrogen-alpha, a quite unusual
target.

Instrument: BRC250 F=1268mm + SBIG-ST10XME + filter 6,3nm
Exposed: 4 x 1800seconds (2h):

http://www.danilopivato.com/tabulae_...m33_brc_ha.htm

Interesting comparison with another shots, but made the exact same
setup with luminance filter:

http://www.danilopivato.com/tabulae_...30/m33_brc.htm

All the best

Danilo Pivato

www.danilopivato.com

excellent - it really highlights the HII regions, especially NGC 604.
M33 really is an excellent galaxy for studying all its internal parts.

Well done!!!

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Snert, and the whole world snerts with you.
Snarg, and you snarg alone ...

That Ha image is fantastic. There is really a lot going on in that Gxy. All goes to show how much we miss looking at luminance images.

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/onyE

That is brilliant.. Love it..

Such a hard galaxy to observe! I was quite pleased when I read that M31 is slowly stripping it apart.

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Yonder is Dubhe seen on Earth tonight as it was in the days of Grover Cleveland's presidency whereas this way is Deneb seen as it was in the lifetime of Muhammed . If one somehow travelled to Deneb at very close to c then whenever you looked back you'd measure Earth as closer to you than the distance you would simultaneously measure between Earth and Dubhe.

Danilo,

Very nice. I'll have to see if I can add some Ha to my LRGB data from last year.

--Andy

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Observatorio de la Ballona

Oh, thank you very much!
Danilo