Contains: Cone nebula, Christmas Tree cluster, NGC 2264, NGC 2252, NGC 2251, IC 448, NGC 2244, IC 2169, Rosette nebula, NGC 2239, The star 17Mon, The star 16Mon, The star ξGem, The star 15Mon, The star 13Mon, The star 12Mon

Image of the day 04/09/2017

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A rose in the eye of the unicorn

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

Astrometry.net 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

Description

30 panels mosaic of H-a, SII and OIII + 104 panels Red and Blue from POSS2 (Digitized Sky Survey http://www.astro.caltech.edu/~wws/poss2.html)

LRGB composition Hybrid Cannistra bi-color (http://www.starrywonders.com/bicolortechniquenew.html) 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

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Takahashi FSQ106ED @f/5 530mm focal length with ONAG XT (http://www.innovationsforesight.com/),
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.

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Author

David Lindemann
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A rose in the eye of the unicorn, 




    

        David Lindemann

In these public groups

Deep Sky Mosaics
Narrowband imaging