British Astronomical Association
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BAA Images Alun Halsey

Observation by Alun Halsey: AR 2887

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Alun Halsey


Alun Halsey


2021 Oct 25 - 12:22


2021 Oct 26 - 18:42


The Sun

  • Helios 150mm f/8 achromat (stopped down to 100mm)
  • Lunt CaK B1200 module
  • QHY5III 178M (using ROI)/1.6x Magnimax element
  • CEM60

Berkshire UK

Target name

The Sun


AR 2887

About this image

Seeing was unsteady and trying out different spacing between the objective lens elements (3mm) to improve scope working in the UV wavelength. SER file stacked in Autostakkert 3 and processed in Astrosurface and PS CS2

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