# Implement GaussianFlux with sinc coefficients

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#### Details

• Type: Story
• Status: Done
• Resolution: Done
• Fix Version/s: None
• Component/s: None
• Labels:
None
• Story Points:
16
• Sprint:
DRP S20-6 (May)
• Team:
Data Release Production
• Urgent?:
No

#### Description

Calculation of flux with apertures that are not circular top-hats are not calculated with sinc interpolation. For Gaussian Aperture and Photometry (GAaP), we need to compute accurate fluxes with (elliptical) Gaussian apertures

#### Activity

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The prototyping and understanding the cost-benefit analysis of the "interpolation" is being carried out in the Jupyter Notebook here: https://github.com/lsst-dm/GAaP_analysis/blob/master/GAaP_interpolation.ipynb

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Arun Kannawadi added a comment - The prototyping and understanding the cost-benefit analysis of the "interpolation" is being carried out in the Jupyter Notebook here: https://github.com/lsst-dm/GAaP_analysis/blob/master/GAaP_interpolation.ipynb
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Dan Taranu added a comment -

Looks good. I made some mostly minor suggestions to enlarge & document the first plot. I am curious to see the comparison for more galaxy-like images.

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Dan Taranu added a comment - Looks good. I made some mostly minor suggestions to enlarge & document the first plot. I am curious to see the comparison for more galaxy-like images.
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Summary: The prototype done in the Python notebook linked demonstrates that sinc coefficients are not required to compute fluxes with Gaussian apertures for the aperture sizes we would consider in practice. Thus, for GAaP, it will suffice to evaluate the Gaussian profile at pixel centers.

Show
Arun Kannawadi added a comment - Summary: The prototype done in the Python notebook linked demonstrates that sinc coefficients are not required to compute fluxes with Gaussian apertures for the aperture sizes we would consider in practice. Thus, for GAaP, it will suffice to evaluate the Gaussian profile at pixel centers.

#### People

Assignee:
Reporter:
Reviewers:
Dan Taranu
Watchers: