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Deneb-4-Widefield Telescope Live
Wide-field photos of Deneb, 45 minutes of exposure in SHO with Telescope Live's SPA-1-CMOS telescope, 9 shots of which in Ha 3x300 seconds, in OIII 3x300 seconds and in SII 3x300 seconds, processed with Pixinsight. All shots and data were captured with Telescope Live. Deneb (AFI: /ˈdɛneb/; Alpha Cygni / α Cygni / α Cyg) is a star in the constellation Cygnus. With an apparent magnitude of +1.25, it is the brightest star in the constellation and the nineteenth brightest star in the night sky. Being at boreal declinations, its observation is favored by the northern hemisphere. It is a white supergiant of spectral class A2I, inherently very bright. If it appears less bright than stars such as Sirius, Arcturus or Vega, this is due to its great distance, which has not yet been precisely determined (estimates vary from 1400 to 3200 light years). Deneb is, in any case, the most distant from the Sun among the first magnitude stars. Its name comes from the Arabic expression Dhaneb, which means tail
Deneb-4-Widefield Telescope Live
Wide-field photos of Deneb, 45 minutes of exposure in SHO with Telescope Live's SPA-1-CMOS telescope, 9 shots of which in Ha 3x300 seconds, in OIII 3x300 seconds and in SII 3x300 seconds, processed with Pixinsight. All shots and data were captured with Telescope Live. Deneb (AFI: /ˈdɛneb/; Alpha Cygni / α Cygni / α Cyg) is a star in the constellation Cygnus. With an apparent magnitude of +1.25, it is the brightest star in the constellation and the nineteenth brightest star in the night sky. Being at boreal declinations, its observation is favored by the northern hemisphere. It is a white supergiant of spectral class A2I, inherently very bright. If it appears less bright than stars such as Sirius, Arcturus or Vega, this is due to its great distance, which has not yet been precisely determined (estimates vary from 1400 to 3200 light years). Deneb is, in any case, the most distant from the Sun among the first magnitude stars. Its name comes from the Arabic expression Dhaneb, which means tail