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Observation by Kevin Gurney: First VS observation: CW Cas lightcurve

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Kevin Gurney


Kevin Gurney


2019 Oct 11 - 22:00


2019 Oct 19 - 14:12

  • WO Star 71
  • Atik 460EX
  • Luminance filter
  • Skywatcher AZEQ6

471 x 30s


Embourei France

Target name

CW Cas


First VS observation: CW Cas lightcurve

About this image

So, having been doing some spectroscopy for a while, I thought I would try my hand at some photometry...

Not being impatient or anything,  I looked for a  target where I stood some chance of getting a light curve in one evening. Eclipsing binaries seemed to offer just the thing...

I processed this in AstroImageJ (having tried Cmuniwin too). 

It seems to compare reasonably well with some recent lightcurves on AAVSO...

Not sure if this constitues some valid data for the database, as I used an imaging Luminance filter (IR and UV cut). In any case I enjoyed the learning experience!

Ultimate aim  is to do some concurrent photometry on spectroscopy targets. To this end, I am trying the photometry now with my CMOS camera to see how results compare. First session looked promising but it was clouded out early on...


Files associated with this observation
Like this image
Jeremy Shears
Jeremy Shears, 2019 Oct 19 - 14:22 UTC

Well done Kevin! Your data look very good - nice and tight.

I hope this will be the first of many....

James Screech
James Screech, 2019 Oct 20 - 15:03 UTC

Great light curve for a first attempt.

CMOS cameras are fine for photometry, I've been using an ASI1600MM-C for a few years with good results.

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