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Sharpless 89 and 90 in Vulpecula



Scope: FSQ-106N at f/5, Location:  Pine Creek, Laguna Mountains, CA   1 June 2016  Camera: Atik 383 (Astronomik Gen II  LRGB filters)

Exposure: Exposure: 14 x 10 min, (1x1 bin) exposure with UV/IR block, 9  x 8 min (2x2) exposure with H-Alpha, 8 x 4 min (2x2 bin) RGB exposures.

Processing: Data Collection -  Sequence Generator Pro (as FITs).  Calibrated, stacked (Kappa Sigma Combine) Deep Sky Stacker, LRGB channel registration and equalization, rough color calibration and gradient removal - Astroart.  Curves, Levels, RGB combine Images Plus. Luminance layering and finishing  - Photoshop. This image is an LRGB combine with Luminance layering. H-Alpha exposure were blended into the IR/UV Block exposres to create the Luminance channel. Final color calibration - eXcalibrator. Color saturation in LAB color. Native image size - 3354x2529.  Final Image size is approximately 2600x1950.

North is up in this image. This field lies within the constellation of Vulpecula. Sharpless 89 and Sharpless 90 (also known as LBN 144) are in the lower left in this image. There are a series of dark nebulae on the right side of the image. This is somewhat of a "playful" image since these dark nebulae combine to give the impression of a "boogey-man" looming over the Sharpless objects. There are also two small star clusters in this field. These objects as well as a few of the bright stars  are identified in the annotated image.  Horizontal FOV is 120'

Image center is approximately - Equatorial 2000: RA: 19hm 12.7s Dec: +2658"


All images and content remain the property of Jim Thommes - copyright 2003 - 2016 copyright 2003 - 2012

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