Hemisphere:  Southern  ·  Constellation: Sagittarius (Sgr)  ·  Contains:  B302  ·  B303  ·  IC 4685  ·  NGC 6559  ·  PK006-02.1  ·  Sh2-29
Getting plate-solving status, please wait...
NGC 6559 and IC 4685, 



    
        

            Dean Carr
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NGC 6559 and IC 4685

Getting plate-solving status, please wait...
NGC 6559 and IC 4685, 



    
        

            Dean Carr
Powered byPixInsight

NGC 6559 and IC 4685

Imaging telescopes or lenses: Orion EON 130mm APO

Imaging cameras: QSI683WSG-8

Mounts: Skywatcher EQ8

Guiding telescopes or lenses: Orion EON 130mm APO

Guiding cameras: QHYCCD QHY5L II Autoguider

Software: Simulation Curriculum Sky Safari Plus  ·  PixInsight  ·  Sequence Generator Pro  ·  PHD2  ·  Simulation Curriculum Starry Night Pro Plus 7

Filters: Astronomik Ha 6nm 1.25"  ·  Astronomik Deep-Sky Blue Filter  ·  Astronomik Deep-Sky Green Filter  ·  Astronomik Deep-Sky Red Filter


Dates:July 15, 2018Aug. 15, 2018

Frames:
Astronomik Deep-Sky Blue Filter: 25x600" (4h 10') -20C bin 1x1
Astronomik Deep-Sky Green Filter: 21x600" (3h 30') -20C bin 1x1
Astronomik Deep-Sky Red Filter: 18x600" (3h) -20C bin 1x1
Astronomik Ha 6nm 1.25": 14x900" (3h 30') -20C bin 1x1

Integration: 14h 10'

Avg. Moon age: 3.67 days

Avg. Moon phase: 15.17%


Astrometry.net job: 2234709

RA center: 18h 9' 28"

DEC center: -24° 1' 31"

Pixel scale: 1.017 arcsec/pixel

Orientation: -1.085 degrees

Field radius: 0.346 degrees


Resolution: 1952x1479

Locations: Wiruna, Ilford, New South Wales, Australia

Data source: Traveller

Description

NGC 6559 and the surrounding area is a complex star forming region approximately 5,000 light years from Earth. It can be seen in the Sagittarius constellation close to the more famous nebulas, M20 (Trifid Nebula) and M8 (Lagoon Nebula). The region comprises red emission nebulosity (from glowing hydrogen), blue reflection nebulas (from light scattered by dust) and dark nebulas/twisty lanes (also from dust).

The picture was formed by combining individual images taken with four different filters that allow imaging of ionised Hydrogen (Ha), plus Red, Green and Blue broadband colours. A separate Luminance filter was not used. Ha was blended with Red, then combined with the Green and Blue images to form a single HaRGB picture.

The image was fully processed in PixInsight. Finalized pictures were cropped and re-sampled by 120% for aesthetic reasons.

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NGC 6559 and IC 4685, 



    
        

            Dean Carr