Amas Messier 71 [Explore! ⭐ August 2, 2024]

M71 (NGC 6838) est un amas globulaire situé dans la constellation de la Flèche à environ 13 050 a.l. (4,0 kpc) du Soleil et à 21 850 a.l. (6,7 kpc) du centre de la Voie lactée. L'astronome suisse Jean Philippe Loys de Cheseaux a découvert Messier 71 en 1745.

 

Messier 71 (also known as M71, NGC 6838, or the Angelfish Cluster) is a globular cluster in the small northern constellation Sagitta. It was discovered by Philippe Loys de Chéseaux in 1745 and included by Charles Messier in his catalog of non-comet-like objects in 1780. It was also noted by Koehler at Dresden around 1775.

(source: wikipedia)

 

 

= Acquisition info =

William Optics Zenithstar 73ii (FL 430mm)

Risingcam IMX571 color

iOptron CEM26

WO Uniguide 50/200 + ZWO ASI224MC

NINA & PHD2

 

= Séances photos =

27 juillet 2024 : Filtre L-Pro -- 120sec x 55

 

= Traitement/processing =

Siril & Gimp

Exposition après traitement : 90min

 

@Astrobox 2.0

Échelle de Bortle : niveau 9

St-Jean-sur-Richelieu, Québec

 

AstroM1

 

 

 

Done