Hemisphere:  Southern  ·  Contains:  IC 4603  ·  IC 4604  ·  IC 4605  ·  M 4  ·  M 80  ·  NGC 6093  ·  NGC 6121  ·  NGC 6144  ·  Part of the constellation Scorpius (Sco)  ·  The star 22Sco  ·  The star Al Niyat (σSco)  ·  The star Antares (αSco)  ·  The star οSco  ·  The star ρOph  ·  The star τSco  ·  rho Oph nebula

Image of the day 06/01/2018

Getting plate-solving status, please wait...
    The Scorpius-Ophiuchus Region, 


            Wei-Hao Wang
    The Scorpius-Ophiuchus Region
    Powered byPixInsight

    The Scorpius-Ophiuchus Region

    Technical card

    Imaging telescopes or lenses: Takahashi TOA 150

    Imaging cameras: Pentax 645z Mod

    Mounts: Takahashi EM-400 Temma2

    Guiding telescopes or lenses: SharpStar 50 ED

    Guiding cameras: ZWO ASI290MM Mini

    Focal reducers: Takahashi TOA 67 Flattener

    Software: PixInsight  ·  RegiStar  ·  Photoshop CC

    Dates:May 13, 2018May 14, 2018

    Frames: 48x480" ISO800

    Integration: 6.4 hours

    Avg. Moon age: 27.90 days

    Avg. Moon phase: 3.28%

    Bortle Dark-Sky Scale: 2.00

    Basic astrometry details

    Astrometry.net job: 3255333

    RA center: 16h 27' 39"

    DEC center: -25° 43' 8"

    Pixel scale: 4.009 arcsec/pixel

    Orientation: 0.105 degrees

    Field radius: 5.255 degrees

    Resolution: 5650x7560

    Locations: Mt. Shiao-Shuei (Taiwan), Taichung, Taiwan

    Data source: Traveller


    This is a 16-frame mosaic. This time, I decided to go relative narrow-field with high resolution. The consequence is it is not very deep.

    The original mosaic has 683 Mega pixel, and it's not practical to upload such a large image. The version uploaded here is a 25% reduction.

    Astrobin seems to have some problem displaying images at this moment. If you have trouble seeing this image, you can go to my Flickr page:
    Large file:



    Wei-Hao Wang
    License: None (All rights reserved)

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    Sky plot


    The Scorpius-Ophiuchus Region, 


            Wei-Hao Wang

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