• M30, NGC 7099 in Capricorn
    • NGC 7099
    M30, NGC 7099
  • M30, or NGC 7099, is a globular cluster in Capricorn that
  • is sometimes called the Jullyfish Cluster.  It is quite old,
  • perhaps 12.8 billion years, has undergone a core
  • collapse, and has produced a type of star known
  • as a blue straggler.  Look that up.
  • Hover over the picture for an annotated version
  • Date:  14 September, 2026
  • FOV:  cropped to 45' × 30'; the angular size of M30 is about 12'
  • Rotation:  −179.957°
  • Telescope:  SVBony MK127 (1421.13mm f/10 Mak-Cass)
  • Guiding:  ZWO ASI120MM mini mono guide camera,
  • SVBony SV165 Mini 40mm f/4 guide scope
  • Computer:  ASIair plus
  • Mount:  ZWO AM5 harmonic drive
  • Camera:  ZWO ASI071mc Pro Cooled (-10°C) Color CMOS with gain 90
  • Pixel size:  4.78 μm
  • Resolution:  0.694 arcsec/pixel
  • Stacking:  fifty-two 300 second frames using Pixinsisght
  • Calibration frames:  20 dark, 20 flat, and 20 bias each session
  • Total Time:  4 hours 20 minutes
  • Processing:  Pixinsight – GradCor, DBE, SPCC, BlurXT, NoiseXT,
  • MStr, GHS, HST, MAS,
  • PixelMath MAS + MStr + GHS + HST, DynCrop, Sat
  • Location:  Darling Hill Observatory near Vesper, NY