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Emission nebula IC410 in Auriga.
This image is a color composite of 14 eight minute exposures shot through a Hydrogen-alpha filter(see image below)
and 9 eight minute exposures shot through an Oxygen-III filter.
The color image was created by using the Hα-filtered data for the red channel and the luminance,
and the O-III data for the blue and green channels.
This technique yields natural colors for emission nebulae because they emit most of their light at the specific wavelengths
passed by the two filters used, so the colors are close to what would be created using broadband red, green and blue filters.
The exposures were acquired using an SXV-H9 CCD camera on a Tele Vue NP-101 4" f/5.4 refractor using a 0.8x focal reducer.
The exposures were calibrated, defect-corrected, stacked and color composited using AIP4WIN V2.
This image has been resampled down from its original size of 1392x1040.
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