- The Flame Nebula
Nebula in Orion
Instrument: 12.5" f/5 Home made Newtonian
Platform: Astrophysics 1200 QMD
CCD Camera: SBIG ST8i NABG with Enhanced Cooling
Guider: SBIG ST4
Exposure: RRGB = 40:20:20:20 (RGB Binned 2x2)
RGB Combine Ratio: 1: 1.1: 1.6
Filters: AstroDon RGB Tricolor
Location: Payson, Arizona
Elevation: 5150 ft.
Sky: Seeing FWHM = 4.5 arcsec (Maxim DL - 10min subframe), Transparency 8/10
Outside Temperature: 10 C
CCD Temperature: -20 C
Processing Tools: Maxim DL, Photoshop, PixInsight, RW Debloomer.
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There are a few
spectacular objects in the sky with very bright stars in the
immediate vicinity, making photography of them difficult. This
is one of them, NGC2024 in Orion, just to the North east of 2nd
magnitude Zeta Orionis. The bright star is off to the lower right,
making reflections within the optical system. This is the first
time I have been able to get the entire nebula using the 12.5"
and CCD. The previous camera, the ST7E would only get a fraction
The color of this object
is very curious indeed. It is not the usual pink or reds seen
in most emission nebula. The addition of a large amount of obscuring
dust imparts a more orangish hue to the nebula, as seen here.
This nebula in addition does not respond well to nebular filters
because of the dust, making viewing of this object even more
Shooting Notes: This
object is an RRGB, using the red filter for the luminance in
a further attempt to isolate this nebula from the bright star.
This tends to make red stars look brighter, and blue stars dimmer
but more saturated.