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Rossette HST colors

Technical card

Resolution: 2416x3277

Astrometry.net job: 411982

Locations: Observatoire personnel, Vérossaz, Valais, Switzerland

Description

NGC2239 - LRGB composition - Hubble palette - HDR

Composition formula : L = H-a + POSS-II Red, R = SII, G = H-a, B = OIII

Data from POSS-II Survey and David Lindemann

Data for luminance captured 10/28/2014 with Takahashi FSQ106ED @f/3.65 387mm focal length with Apogee Alta U8300 monochrome and Astrodon H-a 5nm narrowband filter.

17 x 1200s H-a unbinned = 5h40

Data for chrominance captured 01/09/2013 with Takahashi FSQ106ED @f/5 530mm focal length with Apogee Alta U8300 monochrome and Astrodon OIII 5nm narrowband filter.

8 x 20 minutes Astrodon H-a 5nm filter
3 x 20 minutes Astrodon OIII 5nm filter
3 x 20 minutes Astrodon SII 5nm filter

POSS-II Survey (http://www.astro.caltech.edu/~wws/poss2.html) 9 panels of 60x60 arc/min Red)

Software: MaximDL to capture - CCDStack to calibrate, register, normalize, data reject and combine - Registar for mosaic composition - Photoshop CS5 and PixInsight for color combine and non-linear streching.

Comments

Author

David Lindemann
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Rossette HST colors, David Lindemann