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Imaging telescopes or lenses: Orion ED80T CF
Imaging cameras: Sony NEX-3 DSLR
Mounts: Skywatcher AZ EQ-6 GT
Guiding telescopes or lenses: Skywatcher SW120 F5 refractor
Guiding cameras: ZWO optical ASI120MM-S
Focal reducers: TeleVue 0.8x Photo Reducer/Flattener TRF-2008
Software: Cartes du Ciel · Nebulosity 3 · EQASCOM · StarTools 1.3.5.286 · Metaguide v5.1.7 · AstroTortilla 0.7
Dates:Aug. 2, 2014
Frames:
50x30" ISO800
25x300" ISO800
Integration: 2.5 hours
Darks: ~25
Flats: ~100
Bias: ~100
Avg. Moon age: 5.93 days
Avg. Moon phase: 34.76%
Bortle Dark-Sky Scale: 6.00
Mean FWHM: 1.85
Temperature: 3.00
Astrometry.net job: 343909
RA center: 18h 3' 41"
DEC center: -24° 15' 43"
Pixel scale: 5.505 arcsec/pixel
Orientation: -89.089 degrees
Field radius: 2.079 degrees
Resolution: 620x410
A famous region towards the heart of the galaxy, captured in wide field (about 3.5 x 2.3 degrees). The Lagoon Nebula (M8 or NGC 6523) is a vast cloud of interstellar gas in the constellation Sagittarius (55 x 20 light years across). To the lower right is the Trifid Nebula (M20 or NGC 6541), another colourful HII region. They are located 4,100 to 5,200 light years from Earth.
This astro-image was captured in urban (Bortle 6 skies), and created as a layered blend of 25 x 5 min and 55 x 30 sec subs, for a total integration of 2.5 hours.
Captured and pre-processed with flats (light box), bad pixel map and bias in Nebulosity. Post-processed in StarTools.
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