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NGC 6384 in Ophiuchus



Scope: Celestron 9.25 Edge 235 mm at f/7, Location: Tierra Del Sol - SDAA Club Site, CA,  7 June 2018  Camera: ST8300M (Baader LRGB filters)

Exposure: Exposure:  16 x 10 min (2x2 bin) exposure with IR/UV Block filter, 10 x 4 min (3x3 bin) RGB exposures.

Processing: Data Collection -  Sequence Generator Pro (as FITs).  Calibrated, stacked (Kappa Sigma Combine) - Deep Sky Stacker. LRGB channel registration, equalization, 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. High pass sharpening applied. Images processed at 3352 x 2532 resolution. Final Image size is approximately  2600 x 1950.

North is up in this image.   NGC 6384 is a barred spiral with ring feature  - SAB(r)bc. It is in a somewhat busy star field, but otherwise mostly alone with only a few background galaxies. In the upper right is LEDA 1316476 along with two GALEX mission objects (GALEXASC J173126.94+071403.9 and GALEXASC J173126.05+070941.0). None of these background objects have a redshift measurement.  NGC 6384 has a redshift independent  median distance estimate of 0.0675 billion light years; it has a redshift distance estimate of 0.0727 billion light years (roughly in agreement with the independent estimate). These galaxies and some of the brighter stars are identified in the annotated image..   Horizontal FOV is approximately 38 arc minutes (0.85 arcsec/pix image scale on the full size image).

Image center is located approximately - Equatorial 2000: RA: 17h 32m 24s Dec: +0704'00"


All images and content remain the property of Jim Thommes - copyright 2003 - 2018

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