scholarly journals Point spread function calibration requirements for dark energy from cosmic shear

2008 ◽  
Vol 484 (1) ◽  
pp. 67-77 ◽  
Author(s):  
S. Paulin-Henriksson ◽  
A. Amara ◽  
L. Voigt ◽  
A. Refregier ◽  
S. L. Bridle
Keyword(s):  
Dark Energy ◽  
Point Spread Function ◽  
Point Spread ◽  
Spread Function ◽  
Cosmic Shear

scholarly journals Dark Energy Survey year 3 results: point spread function modelling

2020 ◽  
Vol 501 (1) ◽  
pp. 1282-1299
Author(s):  
M Jarvis ◽  
G M Bernstein ◽  
A Amon ◽  
C Davis ◽  
P F Léget ◽  
...  
Keyword(s):  
Dark Energy ◽  
Point Spread Function ◽  
Systematic Errors ◽  
Field Of View ◽  
Dark Energy Survey ◽  
Point Spread ◽  
Spread Function ◽  
Function Modelling ◽  
Astronomical Images ◽  
Energy Survey

ABSTRACT We introduce a new software package for modelling the point spread function (PSF) of astronomical images, called piff (PSFs In the Full FOV), which we apply to the first three years (known as Y3) of the Dark Energy Survey (DES) data. We describe the relevant details about the algorithms used by piff to model the PSF, including how the PSF model varies across the field of view (FOV). Diagnostic results show that the systematic errors from the PSF modelling are very small over the range of scales that are important for the DES Y3 weak lensing analysis. In particular, the systematic errors from the PSF modelling are significantly smaller than the corresponding results from the DES year one (Y1) analysis. We also briefly describe some planned improvements to piff that we expect to further reduce the modelling errors in future analyses.

scholarly journals Toward Understanding the Anisotropic Point Spread Function of Suprime-Cam and Its Impact on Cosmic Shear Measurement

2013 ◽  
Vol 65 (5) ◽  
pp. 104 ◽  
Author(s):  
Takashi Hamana ◽  
Satoshi Miyazaki ◽  
Yuki Okura ◽  
Tomohiro Okamura ◽  
Toshifumi Futamase
Keyword(s):  
Point Spread Function ◽  
Point Spread ◽  
Spread Function ◽  
Cosmic Shear

Point spread function based feature optimization and fusion for underwater objet recognition

2013 ◽  
Vol 26 (11) ◽  
pp. 944-952 ◽  
Author(s):  
Huibin Wang ◽  
Rong Zhang ◽  
Zhe Chen ◽  
Lizhong Xu ◽  
Jie Shen
Keyword(s):  
Point Spread Function ◽  
Point Spread ◽  
Spread Function ◽  
Feature Optimization

Determination of the Point Spread Function of a Computer-Generated Lens Formed by a Phase Light Modulator

2020 ◽  
Vol 128 (7) ◽  
pp. 1036-1040 ◽  
Author(s):  
N. G. Stsepuro ◽  
G. K. Krasin ◽  
M. S. Kovalev ◽  
V. N. Pestereva
Keyword(s):  
Point Spread Function ◽  
Light Modulator ◽  
Point Spread ◽  
Spread Function

Accurate point spread function (PSF) estimation for coded aperture cameras

2014 ◽  
Author(s):  
Jingyu Yang ◽  
Bin Jiang ◽  
Jinlong Ma ◽  
Yi Sun ◽  
Ming Di
Keyword(s):  
Point Spread Function ◽  
Coded Aperture ◽  
Point Spread ◽  
Spread Function ◽  
Psf Estimation

Aberration retrieval from the intensity point-spread function in the focal region using the extended Nijboer–Zernike approach

2005 ◽  
Vol 52 (12) ◽  
pp. 1695-1728 ◽  
Author(s):  
C. Van der Avoort * ◽  
J. J. M. Braat ◽  
P. Dirksen ◽  
A. J. E. M. Janssen
Keyword(s):  
Point Spread Function ◽  
Focal Region ◽  
Point Spread ◽  
Spread Function
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