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Aaron Andrews PH4100 Major Project Photometry Star field simulation Weekly Reports Notes AaronAndrews 04 Oct 2016
Part One Aim: Generate stars with gaussian profiles, using random positions and fluxes. `Basic` simulation program (04/10/2016): Simulation test1.py.txt Simulation...
AnishaVadher 14 Oct 2016 Working out how much background for each pixel Plotted a histogram of number of photoelectrons against the frequency for a 0.1s...
LauraBevilacqua 14 Oct 2016 MEETING 1: 14/10/2016 Reverse grayscale as black dots easier to see on white background Pixel Values set from 0 max pixel value of...
2015 Projects Photometry Spectroscopy 2016 Projects Photometry Spectroscopy 2017 Projects 2018 Projects Photometry 2019 Projects...
Simulation input (background and noise, Anisha) Simulation (generate star field from coordinates and fluxes, Aaron) Star finder (locate bright objects in...
Meeting 20161007 People present: Stewart Boogert, Glen Cowan, Aaron Andrews, Anisha Vadher, James Angthopo, Will Burrows Anisha: Data taking 20161004 : Exposure...
AnishaVadher 13 Oct 2016 Working out how much background for each pixel Plotted a histogram of number of photoelectrons against the frequency for a 0.1s...
LauraBevilacqua 18 Oct 2016 To do by Friday: Select star cluster for observations Anisha: Fix histrogram from last week Plot median as a function of...
AaronAndrews 25 Oct 2016 To do by Friday: Anisha: Fit sqrt(sigma0^2 lambda t) to the fitted standard deviation as a function of exposure time plot...
AnishaVadher 29 Oct 2016 To do list: Anisha: Aaron: Simulate a star field using known star parameters. Laura: Check star...
AaronAndrews 10 Nov 2016 Anisha: Central Coords determined from uploading images to astrometry.net Simbad database used 14` radius as images at 10`...
AaronAndrews 15 Nov 2016 Anisha: Aaron: Updated code: Simulation test9.py.txt Found cause of position stretch in simulations did not account for relative...
AaronAndrews 24 Nov 2016 Simulation: ( Simulation test10.py.txt) Made example star field with no background used M103 data, 108 stars total. ( M103 Simtest...
AaronAndrews 01 Dec 2016 Observation on 25/11/2016: Observation 2: 20161125 Took multiple luminous, red, visual, and blue frames of Double Cluster and Dragonfly...
AnishaVadher 08 Dec 2016 Updated code: Analysis1.py.txt Created a mode filter and improved sigma filter (uses truncation method) Used to analyse M...
AnishaVadher 16 Jan 2017 Prior to determining flux: Ran mode and Sigma filters on simulated blue and visual Double Cluster, with flat background (mean 900,...
Minimum separation of stars Need threshold for position matching of stars between frames. For each star in true visual data for Double Cluster (), determined...
Matching Stars Have to find the minimum distance between all stars that are input and the candidate stars Set star finding threshold to 1 Sigma to include...
AnishaVadher 06 Feb 2017 Scaling Correction Transforming from RA/DEC into pixel coordinates: where M^ 1 pixels/degrees is the inverse of the transformation...
Drizzle Algorithm Tested for 2 Dragonfly Cluster images (blue filter, no. 1 and 15) from observation 2. Stacking 1 image took approx. 2 hours. Overlap parameters...
Note: last week, report segments requested in place of usual weekly update. Aaron Image offset parameter investigation: Offset Parameters.pdf Summary: Needed...
AnishaVadher 22 Feb 2017 c V g V c B g B Double Cluster 22.38 0.29 0.95 0.02 22.86 0.21 0.94 0.02 Dragonfly Cluster 22.72...
AnishaVadher 07 Mar 2017 c V g V c B g B Original DBCL 22.3808 0.2927 0.9540 0.0249 22.8611 0.2052 0.9399 0.0168 Updated DBCL...
Number of topics: 24

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