NGC1491

Emission Nebula in Perseus

Uploaded 11/26/10

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This was taken in high winds with relatively poor seeing, however the sky was very transparent offering an opportunity to attempt to record far more dim nebulosity than I have before on this extended object. Extreme care was taken on maintaining the color present in the original G2V balanced RGB data by overlaying using Hue the RGB data over the final LRGB. The delicate pinks, oranges and reds were thus faithfully recorded here and are not distorted by the process of combining the luminance data into the final image. I was also careful not to have any white clipping on any color layers to preserve the inner core shades as well.

The Object

This V shaped nebula spans over 20 arc minutes in size and is one of many tiny nebula that peppers the Perseus/Cassiopeia region.

Instrument: 12.5" f/5 Home made Newtonian Mount: Astrophysics 1200 QMD CCD Camera: SBIG 10XME NABG with Enhanced Water Cooling Guider: Meade DSI Pro w/Lumicon Newt Easy Guider Exposure: LRGB = 120:20:20:20 AstroDon RGB Combine Ratio: 1: 1.05: 1.2 Location: Payson, Arizona, Elevation: 5150 ft. Sky: Seeing FWHM = 15 arcsec (Maxim DL - 10min subframe), Transparency 9/10 Outside Temperature: 30 F CCD Temperature: -30 C Image Processing Tools: Maxim DL: 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