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Sh2-173 is an emission nebula laying in the constellation of Cassiopeia. It's an HII region with a diameter of 77 l.y. located around 8800 l.y. from the Earth, in the Perseus arm of our galaxy, in corrispondence of the Caasiopeia association OB5, which includes open clusters an other nebulae like Sh2-172 and Sh2-177. It contains several young stars, resposible of the ionization of the region. [Wiki]
QSI 683 WS
Astrodon Ha, R, G, B
NEQ6 with EQASCOM
OAG with Lodestar
RA 00:22:25 DEC 61:45:00 J2000
4th 5th October 2018
Astrobioparco di Felizzano, AL, Italy
Ha - 50x1200s @-15C bin 1x1 R - 6x600s bin 2x2 G - 6x600s bin 2x2 B - 6x600s bin 2x2
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