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Fighting Dragons Nebula | by Martin_Heigan
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Fighting Dragons Nebula

A bi-color Narrowband image of NGC 6188, an emission nebula located about 4,000 light-years away in the Southern Constellation of Ara.


About this image:

This image is the result of photographing at several occasions and different locations during the past year (from proper Dark Sky Sites to my Pier at home). Deep Sky Objects like this is a nice challenge, as it pushes the limits of my modest Telescope gear (especially my mount). It is very rewarding when you have to work hard for an image, and it turned into an ongoing project.


Technical Info:

64 x 600 sec. 7nm Hydrogen-Alpha (Ha).

64 x 600 sec. 6.5nm Doubly Ionized Oxygen (OIII).

William Optics APO Refractor Telescope.

Sensor cooled to -25°C on my QHY163M.

Integration time just under 22 hours.

Calibration frames: Bias, Darks and Flats. ANSVR Solver via SGP.

Pre-Processing and Linear workflow in PixInsight,

and finished in Photoshop.


Astrometry info:

Center RA, Dec: 249.643, -48.270

Center RA, hms: 16h 38m 34.224s

Center Dec, dms: -48° 16' 12.036"

Size: 1.59 x 1.22 deg

Radius: 1.003 deg

Pixel scale: 3.57 arcsec/pixel

Orientation: Up is 262 degrees E of N

View an Annotated Sky Chart for this image.

View this image in the WorldWideTelescope.


View my Astrophotography Gallery.


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Taken on August 12, 2018