The Triangulum Galaxy - M33
Face on Spiral in Triangulum - with 10" f/3.9 Astrograph
Uploaded 10/25/16
| This
image is my deepest yet on this object, over 2.5 hours of exposure
time with the fast f/3.9 optics of my 10" Orion Astrograph
produced this moderately wide field view of the central region
of this face on spiral galaxy. To produce this image, 1h of LRGB
data was taken, and then the next night 1.5 hours of Halpha data
with a very narrow band 3nm Halpha filter. Then I subtracted
the blue data from the Halpha data to produce an image with only
emission regions and very little continuum. This was then added
to the LRGB data in the following ratios: 100% in the Red channel,
20% in the Blue channel, and 3% in the Green channel to align
with the spectral band of Halpha - H-alpha, H-beta and H-gamma
in the correct proportions. This yields the correct pink color
for the nebula overall. |
Instrument: 10" f/3.9 Orion Astrograph Newtonian with Baader MPCC
Mount: Astrophysics 1200 QMD
CCD Camera: SBIG 10XME NABG with Enhanced Water Cooling
Guider: Meade DSI Pro w/80mm piggyback refractor
Exposure: Ha + LRGB = 90:50:10:10:10
AstroDon RGB Combine Ratio: 1: 1.05: 1.2
Location: Payson, Arizona, Elevation: 5150 ft.
Sky: Seeing FWHM = 3 arcsec , Transparency 8/10
Outside Temperature: 45 F
CCD Temperature: -20 C
Image Processing Tools:
Maxim DL6: Calibration, deblooming (Starizona Debloomer), aligning, stacking
PixInsight: Curves, Deconvolution
Photoshop CS2: Curves, Color Correction, Gradient removal (Grad Xterminator), Cleanup
HOME GALAXIES EMISSION NEBS REFLECTION NEBS COMETS
GLOBULARS OPEN CLUST PLANETARIES LINKS
|
