134 - Nebula in H-Alpha + RGB Combined
From Wikipedia: WR 134 is a
variable Wolf-Rayet star located around 6,000 light years away from
Earth in the constellation of Cygnus, surrounded by a faint bubble
nebula blown by the intense radiation and fast wind from the star. It
is five times the radius of the sun, but due to a temperature over
63,000 K it is 400,000 times as luminous as the Sun. WR 134 was one of three stars in
Cygnus observed in 1867 to have unusual spectra consisting of intense
emission lines rather than the more normal continuum and absorption
lines. These were the first members of the class of stars that came to
be called Wolf-Rayet stars (WR stars) after Charles Wolf and Georges
Rayet who discovered their unusual appearance.
Here is the pure RGB image for comparison:
Camera: Moravian G4 w Astrodon Gen II LRGB filters
Scope: Astro-Physics AP155EDF w 4" FF
Mount: SB Paramount MX
Guiding: SBIG ST402ME on Borg 60 guidescope
12/12/12 x 10min each for RGB
19 x 20 min H-Alpha
28 x 20 min OIII
Lucknow, Ontario, Canada
Images captured with TheSkyX
Session orchestrated by CCD-Commander
Calibration and processing of the RGB and Narrowband in PixInsight
Starless H-Alpha and OIII combined into an HOO image in Photoshop CC.
Then the RGB was overlaid using Lighten blend mode.
Click on the image to see it enlarged.