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BAA Images Alun Halsey

Observation by Alun Halsey: Further observations AR 2781

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Alun Halsey


Alun Halsey


2020 Nov 10 - 12:37


2020 Nov 11 - 13:47


The Sun

  • Skywatcher 72ED apo and Esprit 150ED apo triplet
  • Lunt CaK 1200 module/Coronado SM40/BF10 filter set
  • Herschel wedge/solar continuum filter
  • QHY5III 178 planetary camera
  • CEM60

Reading Berkshire UK

Target name

Sunspot group AR 2781


Further observations AR 2781

About this image

Using 72ED with either Lunt CaK module or SM40/BF10 and QHY5III 178 to record full disk images (close up of sunspot in Ha is cropped from the full disk and enlarged further). White light image taken through the Esprit with Herschel wedge using ROI with the 178. SER files stacked and processed in Astrosurface and final processing (adding false colour) in PS CS2.

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