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FROM THE OBSERVATORY · 25-Apr-2019

Sombrero Galaxy

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Sombrero Galaxy
The Sombrero Galaxy (also known as Messier Object 104, M104 or NGC 4594) is a lenticular galaxy in the constellation Virgo found 31 million light-years from Earth.
BEHIND THE IMAGE

Notes from the session

The galaxy has a diameter of approximately 50,000 light-years, 30% the size of the Milky Way. It has a bright nucleus, an unusually large central bulge, and a prominent dust lane in its inclined disk. The dark dust lane and the bulge give this galaxy the appearance of a sombrero hat. Source: Wikipedia

Image:
41x 300s Luminance
41x 300s Red
38x 300s Green
42x 300s Blue


Total integration 13.5 hours.

Hardware:
Celestron 11" EdgeHD
Skywatcher EQ8 Pro mount
QSI 683-ws8 Camera @ -15°C
Astronomik Luminance, Deep Sky RGB filters
Starlight Xpress Lodestar X2 Autoguider
Starlight Xpress Active Optics
Innovations Foresight On Axis Guider
Starlight Instruments Focus Boss II



Location:
Exposed during 4 nights between 1st April and 7th April 2019.
Orange zone in Brisbane, Australia. (Bortle 7)



Software:
Planning & camera alignment with Aladin 10
Captured with TheSkyX Professional
Guiding with PHD2
FocusLock live focusing
PixInsight: Calibrate, align, stack, deconvolution, noise reduction, LRGB combination, histogram stretch, curves, HD multiscale transform.
Photoshop CC: Saturation, high pass filter.