Sunday, 16 April 2023

M5

A reprocess of the M5 data using drizzle, still unsure if I am happy with the difference.








Discovered in 1702, M5 by German astronomer Gottfried Kirch whilst observing a comet, M5 is very nearly a naked eye object, I cannot confess to observing it naked eye myself but visually through a telescope a stunning object. Though the camera even more spectacular resolving stars all the way to the core. Combined as a RGB image displays a wealth bright colourful stars. M5 contains a large number of Cepheid variable stars that have allowed astronomers to accurately to 24,500 light years.



  • Total Exposure:  1 Hour, 30 Minutes ( 30 x 60 sec in the R,G & B filters)
  • Telescope: Altair Astro EDT130 Triplet.
  • Image Acquisition: ZWO ASIair Pro
  • Camera Settings:  ZWO ASI2600mm pro Gain 100, 0°C
  • Accessories: ZWO 7 position Filter wheel
    •                ZWO Broadband filters 
    •                ZWO EAF
  • Calibration Frames: Darks, Flats calibrated.
  • Stacking and Processing: Pixinsight & touch ups in Photoshop. 
  • Size: 44 x 33 arc minutes
  • Pixel Scale: 1.05 arcsec/pixel

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