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IC 4634 - HLA data, Colm O'Dwyer

IC 4634 - HLA data

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IC 4634 - HLA data, Colm O'Dwyer

IC 4634 - HLA data

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Description

My process of IC 4634 using HST legacy data with raw masters. RGB combined using stacks from the following WFC3 filters:  658 nm (mapped to Red), 656 nm (mapped to Red) and 502 nm (mapped to Green) and 487 nm (mapped to Blue). Data at 656 nm was added as luminosity in the red channel to show the Ha signal of the nebulous regions in the symmetric arms and core. This HLA data was reasonably well calibrated, much fewer hot pixels than usual.

IC 4634 is about 7500 light-years away in the constellation of Ophiuchus.

Acknowledgements: Based on observations made with the NASA/ESA Hubble Space Telescope, and obtained from the Hubble Legacy Archive, which is a collaboration between the Space Telescope Science Institute (STScI/NASA), the Space Telescope European Coordinating Facility (ST-ECF/ESA) and the Canadian Astronomy Data Centre (CADC/NRC/CSA).

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IC 4634 - HLA data, Colm O'Dwyer

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