M33-Galaxy in Triangulum "Composite" LRGB-Ha image of M33 galaxy in Triangulum

Acquisition by M. Angelini, V. Suma and F. Tagliani
Image Processing by Francesco Antonucci

This image of the galaxy has been obtained combining different acquisitions made with three different set up. The aim of this work was to make a "zoomable" Wide-Field image of M33 using a short focal lenght and increasing resolution of the galaxy using a longer focal lenght acquisition of its Luminance and Ha.
Background and RGB base for the whole image (V. Suma):TEC 140ED Reduced @ F/4,7 - FLI 8300ML
L=11x600s R=9x600s, G=10x600s, B= 11x600s

Luminance of the Galaxy (M. Angelini, F. Tagliani):Dall-Kirkham Astrograph 12" F/7.8 - KAF16803
L=4x1200s

Ha of the Galaxy (M. Angelini, F. Tagliani):Dall-Kirkham Astrograph 12" F/7.8 - KAF16803
Ha=1x3600s
Dall-Kirkham Astrograph 12" F/7.8 - KAF1001
Ha=2x1800s

Parco Astronomico del Brallo - September - 2011