M13
Messier 13 (M13), also designated NGC 6205 and sometimes called the Great Globular Cluster in Hercules or the Hercules Globular Cluster, is a globular cluster of about 300,000 stars in the constellation of Hercules.M13 was discovered by Edmond Halley in 1714, and catalogued by Charles Messier on June 1, 1764.
It is barely visible with the naked eye on a very clear night. Its diameter is about 23 arc minutes and it is readily viewable in small telescopes. Nearby is NGC 6207, a 12th magnitude edge-on galaxy that lies 28 arc minutes directly north east. A small galaxy, IC 4617, lies halfway between NGC 6207 and M13, north-northeast of the large globular cluster's center.
Imaging telescopes or lenses: Takahashi FSQ106ED
Imaging cameras: QSI 6120i
Mounts: Takahashi EM 200 Temma 2
Guiding telescopes or lenses: Takahashi FS 60 CB
Guiding cameras: QHY CCD QHY 5 II
Focal reducers: None
Software: PHD 2, Pleiades Astrophoto PixInsight , Sequence Generator Pro SGP
Filters: Astronomik LRGB
Accessories: Robofocus Focuser, ATIK EFW2
Resolution: 3188 x 2128
Dates: 2nd May - 9th May '16
Frames:
Astronomik Lum: 6x600" bin 1x1
Astronomik Red: 6x600" bin 1x1
Astronomik Green: 5x600" bin 1x1
Astronomik Blue: 5x600" bin 1x1
Integration: 3 Hours 30 minutes
Center (RA, Dec):(250.426, 36.455)
Center (RA, hms):16h 41m 42.161s
Center (Dec, dms):+36° 27' 16.981"
Size:85.5 x 57.1 arcmin
Radius:0.857 deg
Pixel scale:1.21 arcsec/pixel
Orientation: Up is 90.2 degrees E of N
It is barely visible with the naked eye on a very clear night. Its diameter is about 23 arc minutes and it is readily viewable in small telescopes. Nearby is NGC 6207, a 12th magnitude edge-on galaxy that lies 28 arc minutes directly north east. A small galaxy, IC 4617, lies halfway between NGC 6207 and M13, north-northeast of the large globular cluster's center.
Imaging telescopes or lenses: Takahashi FSQ106ED
Imaging cameras: QSI 6120i
Mounts: Takahashi EM 200 Temma 2
Guiding telescopes or lenses: Takahashi FS 60 CB
Guiding cameras: QHY CCD QHY 5 II
Focal reducers: None
Software: PHD 2, Pleiades Astrophoto PixInsight , Sequence Generator Pro SGP
Filters: Astronomik LRGB
Accessories: Robofocus Focuser, ATIK EFW2
Resolution: 3188 x 2128
Dates: 2nd May - 9th May '16
Frames:
Astronomik Lum: 6x600" bin 1x1
Astronomik Red: 6x600" bin 1x1
Astronomik Green: 5x600" bin 1x1
Astronomik Blue: 5x600" bin 1x1
Integration: 3 Hours 30 minutes
Center (RA, Dec):(250.426, 36.455)
Center (RA, hms):16h 41m 42.161s
Center (Dec, dms):+36° 27' 16.981"
Size:85.5 x 57.1 arcmin
Radius:0.857 deg
Pixel scale:1.21 arcsec/pixel
Orientation: Up is 90.2 degrees E of N
Sky Plot
Annotated Image
