Observation

Took multiple photos of Pleiades in small field of view in different filters.
pleiades-001_b_40.png

Then moved to a wider field of view, no filter. Aiming to use this for HR diagram rather than the smaller field of view:

pleiades-004.png

Annotated version using astrometry.net:

http://nova.astrometry.net/user_images/1946421#annotated

Using Aladin to find H-R diagram of Pleiades

simbad_HR_sim.png

Using star catalog Simbad

Tycon_2_HR_sim.png

using star catalog Tycon-2

Star Fitting

Figure_4.png

Star fitting does seem to work even with the estimated values discussed in last meeting, also need to talk about what Gaussian we are fitting.

Finding Optimum Threshold

Optimum_threshold.png

Multiplier much higher than expected. Is this something wrong with the simulation or the code? Image used (500 stars):

FindOptimumThresholdImage.png

Star Matching Algorithm

Attempted on real data, haven't actually changed the code yet. But it works for most of the stars using real data:

Pleiades_Image_Matching_First_Attempt.png

Pleiades_Image_Matching_First_Attempt_ZoomedIn.png

-- LunaBorella - 23 Jan 2018

Topic attachments
I Attachment Action Size Date Who Comment
PNGpng Figure_4.png manage 64.3 K 23 Jan 2018 - 00:08 LunaBorella  
PNGpng FindOptimumThresholdImage.png manage 248.8 K 23 Jan 2018 - 01:53 BekiChafer  
PNGpng Optimum_threshold.png manage 31.8 K 23 Jan 2018 - 01:50 BekiChafer Trying to find Optimum threshold
PNGpng Pleiades_Image_Matching_First_Attempt.png manage 49.0 K 23 Jan 2018 - 02:23 BekiChafer  
PNGpng Pleiades_Image_Matching_First_Attempt_ZoomedIn.png manage 27.4 K 23 Jan 2018 - 02:23 BekiChafer  
PNGpng Tycon_2_HR_sim.png manage 11.7 K 23 Jan 2018 - 00:08 LunaBorella  
PNGpng pleiades-001_b_40.png manage 1355.1 K 23 Jan 2018 - 01:45 BekiChafer Small File of View Pleiades
PNGpng pleiades-004.png manage 11581.1 K 23 Jan 2018 - 01:46 BekiChafer Wide View image of Pleiades
PNGpng simbad_HR_sim.png manage 16.6 K 23 Jan 2018 - 00:07 LunaBorella  

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Topic revision: r2 - 23 Jan 2018 - BekiChafer

 
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