bob_franke
NGC 7023 - The Iris Nebula
The Iris Nebula is a bright reflection nebula in the constellation Cepheus, at a distance of about 1,300 light-years. The nebula, LBN 487, surrounds the star cluster NGC 7023. LBN 487 is primarily illuminated by SAO 19158, a hot bluish magnitude 7 star. The characteristic blue color, of the Iris, is a result of blue light being more efficiently scattered by the dust.
RCOS 12.5" Ritchey-Chrétien w/ an SBIG STL-11000 camera using Astrodon Gen II filters
Exposure Details:
Lum 405 min (27 x 15 min, bin 1x1)
RGB 225 min ( 5 x 15 min each, bin 2x2)
Original size = 3897 x 2598
For more info and a larger view see...
NGC 7023 - The Iris Nebula
The Iris Nebula is a bright reflection nebula in the constellation Cepheus, at a distance of about 1,300 light-years. The nebula, LBN 487, surrounds the star cluster NGC 7023. LBN 487 is primarily illuminated by SAO 19158, a hot bluish magnitude 7 star. The characteristic blue color, of the Iris, is a result of blue light being more efficiently scattered by the dust.
RCOS 12.5" Ritchey-Chrétien w/ an SBIG STL-11000 camera using Astrodon Gen II filters
Exposure Details:
Lum 405 min (27 x 15 min, bin 1x1)
RGB 225 min ( 5 x 15 min each, bin 2x2)
Original size = 3897 x 2598
For more info and a larger view see...