Star Field Simulation

Stot distribution changed to a skewed Gaussian so there are more dim stars than bright stars

Accept-reject_monte_carlo_Stot_Skewed_distribution.png

Shape function fixed to be more realistic. Adds the effect of an unfocused image.

Unfocused_Image.png

Also, a globular option was implemented.

Globular_Simulation.png

Tested the ability of the star finding algorithm with dense star fields

Analysis_of_Density_of_Stars.png

Star_Density_Analysis.png

Profiles of Stars

Simulated Data

Profile_of_Multiple_Simulated_Stars.pngZoomedIn.png

The sigma for these two stars when using two separate sigma parameters in fit are 8.987 and 9.072, which corresponds to a size of 5.47'' and 5.52''. In comparison, the FWHM corresponds to 6.51''.

This was repeated for real data

RealDataMultiple_stars.png

The sigma for these stars are 1.8413 and 1.8473 pixels, which correspond to a size of 1.12'' and 1.13''.

Topic attachments
I Attachment History Action Size Date Who Comment
PNGpng Accept-reject_monte_carlo_Stot_Skewed_distribution.png r1 manage 82.0 K 30 Nov 2017 - 18:23 RebekahChafer1 Stot Distribution
PNGpng Analysis_of_Density_of_Stars.png r1 manage 63.3 K 30 Nov 2017 - 22:06 RebekahChafer1 Plot of Counted Stars versus true number of stars
PNGpng Globular_Simulation.png r1 manage 4.1 K 30 Nov 2017 - 21:07 RebekahChafer1  
PNGpng Profile_of_Multiple_Simulated_Stars.png r1 manage 32.4 K 30 Nov 2017 - 22:11 RebekahChafer1 Profile of multiple stars from simulated data
PNGpng RealDataMultiple_stars.png r1 manage 33.1 K 30 Nov 2017 - 22:17 RebekahChafer1 Profile of multiple stars from real data
PNGpng Star_Density_Analysis.png r1 manage 65.2 K 30 Nov 2017 - 22:03 RebekahChafer1 Plot of density of star field versus the difference between counted stars and true value
PNGpng Unfocused_Image.png r1 manage 17.8 K 30 Nov 2017 - 22:00 RebekahChafer1 Simulated unfocused star field
PNGpng ZoomedIn.png r1 manage 29.3 K 30 Nov 2017 - 22:12 RebekahChafer1 Zoomed in image of dimmer star from graph
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Topic revision: r2 - 30 Nov 2017 - RebekahChafer1

 
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