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LBN 748 in Perseus



Scope: Explore Scientific MN152 Maksutov Newtonian at f/4.8, Location: DAA Observatory, Shelter Valley, CA,  11 November 2018  Camera: ST8300M (Baader LRGB filters)

Exposure: Exposure:  16 x 12 min (2x2 bin) exposure with IR/UV Block filter, 8 x 5 min (2x2 bin) RGB exposures.

Processing: Data Collection -  Sequence Generator Pro (as FITs).  Exposure calibration, LRGB registration, and stacking (Median combine -  Winsorized Sigma Clipping) - PixInsight.  LRGB channel registration, equalization and gradient removal - PixInsight.  Curves, Levels, RGB combine, Luminance layering - PixInsight. Final finishing  - Photoshop.  RGB calibration - eXcalibrator. This image is a  RGB combine with Luminance layering.  Images processed at 3352 x 2532 resolution. Final Image size is approximately  2800 x 2100.

North is up in this image.  The main object in this image is LBN 748. It is somewhat dim for a bright nebula (4 of 6 scale, 1=brightest). There are several interesting smaller or background objects in this field. The planetary nebula IC 351 is in the lower right - though at this image scale it looks not much different from that of a deep blue star.  Additionally, the are a few background galaxies - UGC 02885 and several of its companion galaxies, as well as galaxies UGC 02868, 02886, 02887. There is also a distant galaxy cluster (1.728 billion light years by redshift estimate). These objects and some bright stars are identified in the annotated image..     Horizontal FOV is approximately 88 arc minutes (1.88 arcsec/pix image scale on the full size image).

Image center is located approximately - Equatorial 2000: RA: 03h 50m 48s Dec: +3525'49"


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