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IC 2944 (Cen)
Click on the image for a larger version
| Date/Site: |
March 14., 15. and 16., 2015, Astrofarm at the Hacienda los Andes, Chile |
Exposure/
Filter: |
R: 12 x 300 seconds
G: 22 x 300 seconds
B: 13 x 300 seconds
L: 6 x 300 seconds
Hα: 18 x 600 seconds
OIII: 12 x 600 seconds (all -20°C), together 8,5 hours |
| Camera: |
FLI PL29050 with Astrodon II-filters |
Optics/
Instrument: |
Astro-Physics 305mm f/3.8 Riccardi-Honders on AP1200 GTO |
|
Guiding: Lodestar attached to a 61mm-finder,
focusing: FLI Atlas and FocusMax,
image acquisition: MaximDL 5,
calibration: MaximDL, processing: PixInsight 1.8 |
Thackeray's famous globules flow in front of the this nebula-complex.
During acquisition of the LRGB-frames thin clouds drifted through from the west. As there is almost no light pollution the thin clouds were not visible to the unaided eye. Nevertheless they ruined many G- and B-frames, so stars are bloated in the blue channel and the overall sharpness is greatly reduced.
As we learned later during our stay on the Hacienda, these clouds were already the early onset of a strong "El Niño"-season.
IC2944 (Cen)
Click on the image for a larger version
| Date/Site: |
March 14., 15. and 16., 2015, Astrofarm at the Hacienda los Andes, Chile |
Exposure/
Filter: |
Hα: 18 x 600 seconds
OIII: 12 x 600 seconds (all -20°C) |
| Camera: |
FLI PL29050 with Astrodon II-filters |
Optics/
Instrument: |
Astro-Physics 305mm f/3.8 Riccardi-Honders on AP1200 GTO |
|
Guiding: Lodestar attached to a 61mm-finder,
focusing: FLI Atlas and FocusMax,
image acquisition: MaximDL 5,
calibration: MaximDL, processing: PixInsight 1.8 |
In this narrowband-image the sharpest frames of this complex were combined.
Following the modified bicolor technique by Steve Cannistra for combining Hα- and OIII-frames to create a synthetic green channel and especially Gerhard Wechselberger's Pixelmath-implementation in PixInsight I created a synthetic blue channel from the narrowband-channels and combined them to a RGB-image, thereby enhancing the emission nebulae.
Black and white narrowband-images are beautiful in their own way, so they are presented here separately:
IC2944 (Cen), Running-Chicken-Nebula, OIII
Click on the image for a larger version
| Date/Site: |
March 14., 15. and 16., 2015, Astrofarm at the Hacienda los Andes, Chile |
Exposure/
Filter: |
OIII: 12 x 600 seconds (all -20°C) |
| Camera: |
FLI PL29050 with Astrodon II-filters |
Optics/
Instrument: |
Astro-Physics 305mm f/3.8 Riccardi-Honders on AP1200 GTO |
|
Guiding: Lodestar attached to a 61mm-finder,
focusing: FLI Atlas and FocusMax,
image acquisition: MaximDL 5,
calibration: MaximDL, processing: PixInsight 1.8 |
Thackeray's globules float in front of the glowing curtains of ionized oxygen and hydrogen gas.
IC2944 (Cen), Running-Chicken-nebula, Hα
Click on the image for a larger version
| Date/Site: |
March 14., 15. and 16., 2015, Astrofarm at the Hacienda los Andes, Chile |
Exposure/
Filter: |
Hα: 18 x 600 seconds (all -20°C) |
| Camera: |
FLI PL29050 with Astrodon II-filters |
Optics/
Instrument: |
Astro-Physics 305mm f/3.8 Riccardi-Honders on AP1200 GTO |
|
Guiding: Lodestar attached to a 61mm-finder,
focusing: FLI Atlas and FocusMax,
image acquisition: MaximDL 5,
calibration: MaximDL, processing: PixInsight 1.8 |
|