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:

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

All the best

Danilo Pivato

www.danilopivato.com