IC443 - The Jellyfish Nebula
Location :
Optics :
Filter(s) :
Mount :
Optics :
Filter(s) :
Mount :
Landgraaf
Orion Optics UK 10" f4.8 Newton + Paracorr
Baader UHC-S
Losmandy G-11
Autoguiding :
Camera :
Exposure info :
Total Exposure :
Camera :
Exposure info :
Total Exposure :
Atik 1HS, 60/700 Achro & Guidemaster
SBIG ST-8300M
25 x 300 sec
2h 5m
SBIG ST-8300M
25 x 300 sec
2h 5m
[ Other resolutions/versions - or click the image for maximum resolution available ]
Higher Resolution 1280 x 960 Pixel (287 kB)
Maximum Resolution 1400 x 1050 Pixel (257 kB)
Additional notes and remarks:
Object info
IC443 is believed to be the remains of a supernova. It is also known as the Jellyfish Nebula due to it's distinctive shape.This nebula is located in the constellation Gemini and lies at about 5000 light-years from Earth.
Processing
All separate frames were calibrated, aligned and stacked in ImagesPlus 2.8.
Photoshop CS4 was used for further processing - curves adjustment, levels adjustment, etc. The image was calibrated using 10 min/max excluded darks, 15 (dark-subtracted) average combined flats and 12 average combined bias frames. Noel Carboni's toolset was used as well (Local Contrast Enhancement)
Comments
Focus was way off - wind gusts gave the autoguider a hard time.
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