-- AaronAndrews - 15 Nov 2016

Anisha:

Aaron:

  • Updated code: Simulation_test9.py.txt
  • Found cause of position stretch in simulations - did not account for relative distance change in relation to declination angle. Only applies to right ascension.
  • Correction:
 \begin{equation} \Delta \alpha _{corrected}=\Delta \alpha \cos{\delta } \end{equation}  $\Delta \alpha _{corrected}$: Relative distance separation on focal sphere at declination $\delta$  \\ $\Delta \alpha$: Relative distance separation for $\delta = 0$.

  • Simulated Double Cluster, Dragonfly cluster, M103, with correction (all with: visual mag., sigma=3, rho=0.0001, max. peak value=40000 ADU, exposure time=60s).
  • Some paramaters:
  • RA (h m s) DEC (d m s) Stars in frame Background mean Background S.D.
    Double Cluster 02 22 32.383 +57 07 57.816 737 922.41504882 6.6105064384
    Dragonfly Cluster 01 19 59.472 +58 15 57.858 171 922.41504882 6.6105064384
    M103 01 33 34.540 +60 38 13.177 108 922.41504882 6.6105064384
  • Full output files (all parameters): DoubleCluster_simtest4.txt, Dragonfly_simtest4.txt, M103_simtest3.txt
  • Could add more counting values, e.g. no. of stars with peak>background S.D.
  • Also uploaded to astrometry.net and fitted:
  • Returned parameters:
  • RA (h m s) DEC (d m s) plate scale (arcsec/pixel) rotation (degrees, clockwise)
    Double Cluster 02h 22m 32.312s +57 07' 57.280" 0.61 -0.011
    Dragonfly Cluster 01h 19m 59.364s +58 15' 57.890" 0.61 -0.116
    M103 01h 33m 34.521s +60 38' 12.897" 0.61 0.0358
Laura:
Topic attachments
I Attachment History Action Size Date Who Comment
Unknown file formatfits DoubleCluster_simtest4.fits r1 manage 12195.0 K 17 Nov 2016 - 15:31 AaronAndrews Double cluster simulation fits file
Texttxt DoubleCluster_simtest4.txt r1 manage 54.7 K 17 Nov 2016 - 15:11 AaronAndrews Double Cluster simulation parameters
Unknown file formatfits Dragonfly_simtest4.fits r1 manage 12195.0 K 17 Nov 2016 - 15:33 AaronAndrews Dragonfly cluster simulation fits file
Texttxt Dragonfly_simtest4.txt r1 manage 12.8 K 17 Nov 2016 - 15:12 AaronAndrews Dragonfly Cluster simulation parameters
Unknown file formatfits M103_simtest3.fits r1 manage 12195.0 K 17 Nov 2016 - 15:39 AaronAndrews M103 simulation fits file
Texttxt M103_simtest3.txt r1 manage 8.0 K 17 Nov 2016 - 15:12 AaronAndrews M103 simulation parameters
Texttxt Simulation_test9.py.txt r1 manage 20.2 K 17 Nov 2016 - 15:28 AaronAndrews Simulation code (9)
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Topic revision: r3 - 17 Nov 2016 - AaronAndrews

 
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