Dates: Aug. 25, 2017
Integration: 2.8 hours
Avg. Moon age: 3.84 days
Avg. Moon phase: 15.75%
Astrometry.net job: 1715514
RA center: 270.056 degrees
DEC center: -31.078 degrees
Pixel scale: 2.326 arcsec/pixel
Orientation: 1.577 degrees
Field radius: 1.865 degrees
Locations: Bellatrix Observatory, Oliveira, Brazil
The bat-eared fox (Otocyon megalotis) is a species of fox found on the African savanna, named for its large ears, which are used for thermoregulation. (Wikipedia)
This high resolution large field (2.3 degrees X 2.9 degrees) in the constellations Sagittarius/Ophiuchus shows the dark nebulae B 295 (to the right and below the bright star Alnasl) and LDN 1788 (upper right corner). The pair of globular clusters NGC 6528 / NGC 6522 appears at top left. The small dark nebula B 298 is shown near NGC 6528.
The dark nebulae LDN 1788 and B 295 together resemble a walking bat-eared fox, representing the head and hind legs with the tail, respectively.
This rarely photographed area has relative low brightness within the Milky Way, and is highly reddened by interstellar dust. I show here several versions, with different parameters of the Photometric Color Calibration process of PixInsight. Version A compensates for the interstellar absorption. Version B is more realistic, and uses the standard spiral galaxy photometry. Version C is midway between versions A and B. Version D is a less aggressive (and darker) processing, and perhaps more pleasing on a 4K monitor.
The inset fox photograph was obtained from https://wallpaperscraft.com/download/bat_eared_fox_walk_fox_96954/3740x2584.
Thanks to J. Barros from SONEAR.
Thanks for watching!
Version A compensates for the interstellar absorption, and shows bluer stars. It also includes the inset fox photograph. Version B is more realistic, and uses the standard spiral galaxy photometry.
Version C is midway between versions A and B.
Version D is a less aggressive (and darker) processing, with more nuanced detail, and perhaps more pleasing on a 4K monitor.
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