Contains: IC 435, NGC 2024, NGC 2023, Horsehead nebula, IC 434, IC 432, IC 431, M 43, NGC 1982, NGC 1977, NGC 1980, M 42, Great Nebula in Orion, NGC 1976, NGC 1975, NGC 1981, NGC 1973, The star Alnitak (ζOri), The star σOri, The star 45Ori, The star ιOri, The star θ2Ori, The star θ1Ori, The star 42Ori
Getting plate-solving status, please wait...

My first contribution for the Orion Challenge

Technical card

Resolution: 9020x6538 job: 859762

RA center: 84.337 degrees

DEC center: -4.004 degrees

Pixel scale: 2.087 arcsec/pixel

Orientation: 90.144 degrees

Field radius: 3.228 degrees

Locations: Observatoire personnel, Vérossaz, Valais, Switzerland


Here are some figures:
9 panels mosaic
194 H-alpha raw images of 10 minutes each
81 Lum raw images of 5 minutes each
8.5 GBytes of acquired data
39h05 total exposure during 6 nights from 10/30/2015 to 11/08/2015
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 Lum 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 - Photoshop CS5 and PixInsight for non-linear streching and HDR processing.



David Lindemann

Sky plot

Sky plot


My first contribution for the Orion Challenge, 


        David Lindemann