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Observation by Kevin Gurney: Psi1 Aur spectrum

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Kevin Gurney


Kevin Gurney


2016 Dec 27 - 23:18


2017 Jan 12 - 15:57

  • Celestron 8SE
  • Alpy 600
  • Skywatcher AZ-EQ6-GT
  • Atik 460EX

11 subs of target, each 120s.



Target name

Psi1 Aur


Psi1 Aur spectrum

About this image

First use of Alpy with Celestron 8SE (I had done some prior work on bright stars with a 70mm refractor). The instrument response was derived using Tau Aur.  Calibration and flats using the Alpy calibration module. Data reduction in (beta) Demetra.

The target is fairly bright so probably not difficult to get good data here, but  I was pleasantly surprised to see a good match with a reference spectrum for another K5 star  (HD47914 - Miles dbase) as shown in the wavelength-range-restricted plot. There are differences in general shape maybe instrument response needs more work.

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