Continuing my adventures in remote internet astrophotography, this data set was acquired October 2020 with the Telescope Live network. A Planewave CDK24 was used. This is a 61-cm telescope with Corrected Dall Kirkham optical design, situated in the Rio Hurtado Valley, Chile. It is equipped with a set of Astrodon astrophotography filters.

M16 nebula Chile
The Eagle Nebula aka M16, imaged from Chile.

M16 is part of a diffuse emission nebula, or H II region, which is catalogued as IC 4703. This region of active current star formation is about 5700 light-years distant.

The image above was taken using special narrowband filters which isolate the H-alpha (Ha), Oxygen III (OIII) and Sulphur II (SII) channels of the light spectrum. These channels are combined into what is often referred to as the “Hubble Palette”. The SII represents red, Ha represents green and the OIII is the blue.  This is also known as a “SHO” palette.

I processed the data in PixInsight. The data from Telescope Live is provided calibrated (darks, flats applied already) but needs processing to be done to it in order to arrive at the final image shown.


  • Planewave CDK24, 61cm telescope F6.5, 3962mm FL
  • FLI PL 9000 CCD camera (0.62 arcsec/px)
  • Mount: Mathis MI-1000/1250 with absolute encoders
  • Astrodon 3nm narrowband astrophotography filters
  • Total exposure time: 3hrs 10min
PlanewaveCDK24 telescope in Chile
The Planewave CDK24 61cm telescope used to take this image of M16.

Have you tried remote internet astrophotography? Comment below and let me know!

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