NGC2403 in Camelopardalis Enhanced Hydrogen Comparison

Spiral galaxy in Camel

Uploaded 1/1/07

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Select an image size for a larger view: 1024 x 768 1600 x 1200

This comparison illustrates that when the large amount of hydrogen present in this galaxy is made more easily visible, the entire galaxy became swamped with the pink light of swirling hydrogen clouds. Once again, you will easily be able to see that many of the blue stellar OB associations present in the arms are intimately connected with thier accompanying hydrogen regions. The right side of this spiral is so intense with gas, that the entire appearance of the galaxies arm is changed.

This years rendition of this splendid face on spiral in Camelepodarus incorporates the latest processing techniques, and plenty more color data for a rich and very low noise presentation. NGC2403 is a low surface brightness inclined Sc spiral, rated at an integrated magnitude of 8.9, which is spread out to a rather thin 25 arcseconds in size - about half a degree long here. North is up in this view, and the galaxy is inclined about 5 degrees from face on for our view from the Earth. Additionally, this galaxy is very dust obscured, with a B-V index of.47, meaning it photographs as nearly pure yellow. Histogram equalization was able to easily correct for this discoloration, presenting the galaxy in a more true color appearance.

Instrument: 12.5" f/5 Home made Newtonian Mount: Astrophysics 1200 QMD CCD Camera: SBIG 10XME NABG with Enhanced Water Cooling Guider: SBIG ST4 w/Lumicon Newt Easy Guider Exposure: LRGB = 80:40:40:40 (RGB Binned 2x2) Enhanced Image add 2h of Ha data AstroDon RGB Combine Ratio: 1: 1.05: 1.11 Location: Payson, Arizona, Elevation: 5150 ft. Sky: Seeing FWHM = 4.5 arcsec (Maxim DL - 10min subframe), Transparency 8/10 Outside Temperature: 35 F CCD Temperature: -30 C Image Processing Tools: Maxim DL: Calibration, Deblooming (Starizona Debloomer), aligning, stacking Gralak's Sigma: Stacking PixInsight: Curves, Deconvolution, noise reduction Photoshop CS2: Curves, Color Correction, Gradient removal (Grad Xterminator), Cleanup HOME GALAXIES EMISSION NEBS REFLECTION NEBS COMETS GLOBULARS OPEN CLUST PLANETARIES LINKS


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