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Scope: Megrez II 80 mm at f/4.3, Location: Laguna Mountains, CA 11 August, 2007, Camera: Artemis285
Exposure: 8 x 480 sec H-Alpha (1x1), 6 x 90 sec RGB Exposures (2x2).
Processing: Images were captured with Artemis Capture (as FITs). Aligned/stacked in Registax 4 and saved as FITS. H-Alpha and Color channels were scaled and color balanced in Astroart. Channels were co-registered in Astroart. Curves and Levels applied in Photoshop to the Luminance construction to optimize object features. Luminance construction consisted of the H-Alpha exposure. Final LRGB combine was done in Photoshop using Luminance Layering (or LLRGB). Color adjustment made to correct the color shift created by Luminance application. A light background noise filtering was applied with PixInsight LE SGBNR. Selective sharpening was applied to nebula features in Photoshop with a layer mask. Final Image size is approximately 1040x1392
North is up in this image. This is a hydrogen emission complex more commonly known as Cederblad 214 but it is also catalogued by Sharpless in his catalog as Sh2-171. This field is located on the border of constellations Cepheus and Cassiopeia. The central star energizing the hydrogen emission is a 5.7 apparent magnitude star. This image replaces an earlier image that can be seen in the Archives here . The Horizontal FOV is 67'.
Image center is located approximately - Equatorial 2000: RA: 00h 04m 42s Dec: +67°09'59"