NGC7023. The Iris Nebula
Reflection Nebula in Cepheus
The Iris nebula is a reflection nebula that shines in blue due to the light it reflects from
the bright star in its middle. This is a very young and very hot star. The cloud from which it formed still surrounds it but is being blown away by the push of star's radiation. Central filaments of cosmic dust glow with a reddish photoluminesence as some hidrogene effectively convert the star's  ultraviolet  radiation to visible red light.

Distance to earth:
1400  light years
light years

Date and location 8-sep-2007. Caraquiz, Guadalajara
Telescope LX200R 8".  Autoguíde with Toucam SC3, pseudo "e-finder" and Guidemaster
Camera Artemis11002. IDAS LPS Hutech filter. 0.7 focal reducer
Image processing
L: 7x900s; RGB:8x180s bin 2x2. Images stacked with AIP4WIN.  Process with  Pixinsight

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