2023PASP..135h5003R

Query : 2023PASP..135h5003R

2023PASP..135h5003R - Publ. Astron. Soc. Pac., 135, part no 8, 5003 (2023/August-0)

Dynamic Wisp Removal in JWST NIRCam Images.

ROBOTHAM A.S.G., D'SILVA J.C.J., WINDHORST R.A., JANSEN R.A., SUMMERS J., DRIVER S.P., WILMER C.N.A. and BELLSTEDT S.

Abstract (from CDS):

The James Webb Space Telescope (JWST) near-infrared camera has been found to exhibit serious wisp-like structures in four of its eight short-wavelength detectors. The exact structure and strength of these wisps is highly variable with the position and orientation of JWST, so the use of static templates is non-optimal. Here we investigate a dynamic strategy to mitigate these wisps using long-wavelength reference images. Based on a suite of experiments where we embed a worst-case scenario median-stacked wisp into wisp-free images, we define suitable parameters for our wisp removal strategy. Using this setup we re-process wisp-affected public Prime Extragalactic Areas for Reionization and Lensing Science data in the North Ecliptic Pole Time Domain Field, resulting in significant visual improvement in our detector frames and reduced noise in the final stacked images.

Abstract Copyright: © 2023. The Astronomical Society of the Pacific. All rights reserved.

Journal keyword(s): Astronomical instrumentation - Astronomical techniques

Simbad objects: 1

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Number of rows : 1
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 NAME NEP reg 18 00 00.000 +66 33 38.55           ~ 430 0

Query : 2023PASP..135h5003R

Basic data :
NAME NEP -- Region defined in the Sky
Other object types: otypes_help 		reg ()
ICRS coord. (ep=J2000) : 		18 00 00.000 +66 33 38.55 [ ] D ~
FK4 coord. (ep=B1950 eq=1950) : 		18 00 00.300 +66 33 38.48 [ ]
Gal coord. (ep=J2000) : 		096.383977 +29.811440 [ ]
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Identifiers (3) :
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NAME NEP NAME North Ecliptic Pole NAME Northern Ecliptic Pole

References (430 between 1850 and 2026) (Total 430)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).
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