M4 & Sh2-9




M4 (lower left, also known as NGC 6121) is a loosely concentrated globular cluster about the size of the full moon. Sh2-9 (upper right) is both a reflection nebula and an emission nebula. Both are in the constellation Scorpius and are near the bright star Antares.

Technical Information      
Date:              June, 2015
Location:        Green Valley, Arizona
Telescope:     Takahashi FSQ-106EDX
Camera:         SBIG STT-8300M
Filters:            Astrodon Gen 2
Mount:            AstroPhysics 1200
Exposure:       HaLRGB = 280:140:60:60:60 minutes respectively, all unbinned
Software:        Acquisition: Maxim DL 5, TheSkyX, Pinpoint, CCD Commander
                       Processing: CCDStack, Pixinsight, PhotoShop CS6 with various plugins