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, 




    

        David Lindemann
    A rose in the eye of the unicorn

    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

    Data source: Unknown

    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

    ---------------------------------------------------

    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.

    Comments

    Author

    dlindemann
    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