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Colored version of my 9 pannels mosaic for the Orion Challenge

Technical card

Resolution: 8960x6490 job: 882931

Locations: Observatoire personnel, Vérossaz, Valais, Switzerland


Here are some figures:

Hybdrid palette with LRGB composition
Composition formula HaLNIR:((HaR:G:B) + (SII:OIII:Ha))
194 unbinned raw images H-alpha of 10 minutes each
366 unbinned raw images LRGB of 5 minutes each
18 GBytes of acquired data
72h50 total exposure during 10 nights from 10/30/2015 to 11/12/2015 + embedded narrowband and NIR data captured in 2013 and 2014
A full resolution of 9020x6538 pixels for a total of 59 MPixels
A field of 5.2° per 3.8°
50 bias + 50 dark + 50 flats for calibration in CCDStack


Takahashi FSQ106ED @f/5 530mm focal length with ONAG XT (, Apogee Alta U8300 monochrome @-30°C and Astrodon narrowband H-alpha 5nm and TrueBalance LRGB and NIR filters on 10micron GM2000 HPS II

Software: MaximDL to capture - SkySurveyor to calculate mosaic tiles and to automatically move the scope to the next tile coordinate - SharpLock to keep the optical train perfectly focused - CCDStack to calibrate, register, normalize, data reject and combine - Registar and PixInsight for mosaic composition - Photoshop CS5 and PixInsight for non-linear streching and HDR processing.



David Lindemann


Colored version of my 9 pannels mosaic for the Orion Challenge, David Lindemann