Observation by Bill Ward: "Faux" calcium solar image

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Bill Ward


Bill Ward


2016 May 22 - 12:03


2021 Jun 28 - 19:40


The Sun

  • FL102mm refractor
  • 3x tele Vue Barlow
  • DMK21 50fps camera
  • 390nmn 10nm bandpass UV filter


Target name

The sun


"Faux" calcium solar image

About this image

This was the largest sunspot on the disc for a while... Was experimenting a narrow-band UV filer (primarily used for CN observations in comets) to see if I could produce a faux Ca image. With a bit of false colour it turned out not too bad. Image constructed from 100 video frames, 640x480 at 50fps to try and freeze the seeing.

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