NGC 5746 and NGC 5740 in Virgo
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ON IMAGE FOR FULL SIZE VIEW (2800x2100)
Scope:
Celestron 9.25 Edge 235 mm at f/7, Location: DAA Observatory,
Shelter Valley, CA, 19 May 2017
Camera: ST8300M (Baader LRGB filters) Exposure:
Exposure: 15 x 12 min
(1x1 bin) exposure with IR/UV Block filter, 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,
equalization, and gradient removal - Astroart. Curves, Levels, RGB
combine - ImagesPlus. Luminance Layering, final stretch, and finishing -
Photoshop. RGB calibration - eXcalibrator. This image is a RGB combine
with Luminance layering. Color saturation in LAB color. The IR/UV Blocking filter exposure stack
was used for the
luminance layer. Images processed at 3352 x 2532 resolution. Final Image size is approximately
2800 x 2100. North is to the
left in this image.
The two dominant galaxies in this image are NGC 5746 (lower left) and NGC 5740
(upper right). Both galaxies share some common morphology characteristics
(SAB(rs)). This field is in the eastern part of the constellation of Virgo. The
smaller galaxy in the very upper right is the remaining NGC object in this field
- NGC 5738. All three galaxies together form the galaxy group [CFM2007]
HDC 888 from the Crook+ group catalog created 2007 from the 2MASS (survey).
There are other visible background galaxies in this field with some high
redshift values that put their lookback distance at distances of about 1 billion
light years Some of these galaxies and some of the brighter stars are identified in the
annotated
image.. This image replaces an
earlier image that can be accessed in the Archives
here. Horizontal FOV is
approximately 38 arc minutes. Image center is located approximately - Equatorial 2000: RA: 14h 44m 45s Dec: +01°49'07"
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