Inclined Spiral Galaxy in Leo

Uploaded 5/5/06

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There few galaxies in Leo that are as detailed and display outer structure like this one. This 9.7 magnitude object spans a huge 13 arcminutes across, and in the same field we can find many distant 16th magnitude galaxies as well. The brightest of these is UGC5086, directly above the galaxy near the top of the frame. This 16th magnitude dwarf is .9 mins in size. A peculiar object is to the left (south) of the galaxy, a small disk of light known as MAC0932+2122, another 16th magnitude galaxy only .4 mins in size and of unknown classification. This image has enhanced hydrogen regions, however still maintains the overall G2V precise color calibration.


Standard L combine of 6 ten minute exposures with Astrodon Clear filter. 50m of Halpha data was combiend at 75% with the 20m Red data using lighten to maintain the G2v contribution for the stars accurately, yet increase the contrast for the nebula only. Stars were darkened or removed by subtracting the B+G image from the Halpha data. This removed the Ha bright stars, and the galaxies core. That was used for a normal RGB combine using G2V ratios.

Instrument: 12.5" f/5 Home made Newtonian Platform: Astrophysics 1200 QMD CCD Camera: SBIG 10XME NABG with Enhanced Water Cooling Guider: SBIG ST4 Exposure: L(R^Ha)GB = 60:20+50:20:20 (RGB Binned 2x2) This ^ symbol means "Lighten" RGB Combine Ratio: 1: 1.05: 1.11 Filters: AstroDon RGB Tricolor Location: Payson, Arizona Elevation: 5150 ft. Sky: Seeing FWHM = 4.5 arcsec (Maxim DL - 10min subframe), Transparency 9/10 Outside Temperature: 35 F CCD Temperature: -30 C Processing Tools: Maxim DL, Gralaks Sigma, Photoshop, PixInsight, Starazona Debloomer. HOME GALAXIES EMISSION NEBS REFLECTION NEBS COMETS GLOBULARS OPEN CLUST PLANETARIES LINKS


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