Image of the day 04/09/2017

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Technical card

Imaging telescope or lens: Takahashi FSQ106ED

Imaging camera: Alta U8300

Mount: 10micron GM2000 HPS II GM2000

Guiding telescope or lens: Takahashi FSQ106ED

Guiding camera: Atik 16IC

Software: MaximDL 5Adobe Photoshop CS5

Filters: Ha 5nmOIII 5nmSII 5nm

Accessory: Atik EFW2 Filter Wheel

Resolution: 19004x11278 job: 1522550

RA center: 99.761 degrees

DEC center: 7.783 degrees

Pixel scale: 2.018 arcsec/pixel

Orientation: -90.222 degrees

Field radius: 6.192 degrees

Locations: Observatoire personnel, Vérossaz, Valais, Switzerland


30 panels mosaic of H-a, SII and OIII + 104 panels Red and Blue from POSS2 (Digitized Sky Survey

LRGB composition Hybrid Cannistra bi-color ( narrowband and broadband palette

363 raw narrowband images of 10 minutes each
208 raw broadband images from POSS2
60.5h total exposure during 10 nights
A full resolution of 11278x19004 pixels for a total of 214 Megapixels
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, OIII and SII 5nm 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 assembly - Photoshop CE and PixInsight for non-linear streching.



David Lindemann

Sky plot

Sky plot


A rose in the eye of the unicorn, David Lindemann

In these public groups

Deep Sky Mosaics
Narrowband imaging