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META TOPICPARENT name="LogBookAstronomy"

Log Book Entry No.151

Days, Calendar Created: 08 Nov 2017 12:53:16 Days, Calendar Last Revised: 08 Nov 2017 12:53:16 Person LenaLenz1 Text Solar Limb Darkening LL

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IDEA! 10:30 at dome, D. Bedingham, L. Lenz

  • cloudy weather => took no images of Sun
  • Vignetting images from last week were not symmetric
=> will have to retake those images with diffuse light (outside) and a variety of exposure times to achieve different max/min intensity values,
the ratio of I_max/I_min should be approx the same throughout

Next steps:

  • Take correct vignetting images with different exposure times and diffuse light
  • Analyse new vignetting images and apply curve fitting to it => V(x) => can receive real intensity with I(x)*V_max/V(x)
  • Estimate unscattered intensity f of Sun images
  • Fit curve to unscattered intensity => Gaußian fit => should get data back (~Gaußian curve)
  • Optimise f
Back to: LogBookAstronomy

META FORM name="%25SYSTEMWEB%25.LogBookForm"
FORM FIELD Subject Subject Solar Limb Darkening LL
FORM FIELD Status Status blank
FORM FIELD Author Author TWikiGuest
 
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