Deconvolution of drizzled and rotated HST WFPC2 images: Faint-object photometry in crowded fields

Andrew Shearer

Deconvolution of drizzled and rotated HST WFPC2 images: Faint-object photometry in crowded fields

Andrew Shearer

Physics

Research output: Chapter in Book or Conference Publication/Proceeding › Conference Publication › peer-review

Abstract

We have further adapted our deconvolution-based HST WFPC2 reduction techniques, which our simulations have shown to be very effective in crowded fields (Butler 2000), to take advantage of the extra resolution afforded by dithered observations. This appears to be the first attempt at non-linear restorations of data which had already been sub-sampled and combined in a linear manner using the STSDAS drizzle software, thus attaining a net subsampling factor of 4 x 4. The motivation was a search for the optical counterpart of the millisecond pulsar PSR B1821-24 in the globular cluster M28; the technique is illustrated by our photometric search for candidates in the radio-derived error circle, in archival HST WFPC2 images in both the F555W F814W bands of the core field of M28.

Original language	English (Ireland)
Title of host publication	ASTRONOMICAL DATA ANALYSIS SOFTWARE AND SYSTEMS X
Publisher	ASTRONOMICAL SOC PACIFIC
Number of pages	3
Volume	238
Publication status	Published - 1 Jan 2001

Authors (Note for portal: view the doc link for the full list of authors)

Authors
Butler, R,Golden, A,Shearer, A,Harnden, FR,Primini, FA,Payne, HE
Butler, R;Golden, A;Shearer, A

Cite this

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title = "Deconvolution of drizzled and rotated HST WFPC2 images: Faint-object photometry in crowded fields",

abstract = "We have further adapted our deconvolution-based HST WFPC2 reduction techniques, which our simulations have shown to be very effective in crowded fields (Butler 2000), to take advantage of the extra resolution afforded by dithered observations. This appears to be the first attempt at non-linear restorations of data which had already been sub-sampled and combined in a linear manner using the STSDAS drizzle software, thus attaining a net subsampling factor of 4 x 4. The motivation was a search for the optical counterpart of the millisecond pulsar PSR B1821-24 in the globular cluster M28; the technique is illustrated by our photometric search for candidates in the radio-derived error circle, in archival HST WFPC2 images in both the F555W F814W bands of the core field of M28.",

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year = "2001",

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AU - Shearer, Andrew

PY - 2001/1/1

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N2 - We have further adapted our deconvolution-based HST WFPC2 reduction techniques, which our simulations have shown to be very effective in crowded fields (Butler 2000), to take advantage of the extra resolution afforded by dithered observations. This appears to be the first attempt at non-linear restorations of data which had already been sub-sampled and combined in a linear manner using the STSDAS drizzle software, thus attaining a net subsampling factor of 4 x 4. The motivation was a search for the optical counterpart of the millisecond pulsar PSR B1821-24 in the globular cluster M28; the technique is illustrated by our photometric search for candidates in the radio-derived error circle, in archival HST WFPC2 images in both the F555W F814W bands of the core field of M28.

AB - We have further adapted our deconvolution-based HST WFPC2 reduction techniques, which our simulations have shown to be very effective in crowded fields (Butler 2000), to take advantage of the extra resolution afforded by dithered observations. This appears to be the first attempt at non-linear restorations of data which had already been sub-sampled and combined in a linear manner using the STSDAS drizzle software, thus attaining a net subsampling factor of 4 x 4. The motivation was a search for the optical counterpart of the millisecond pulsar PSR B1821-24 in the globular cluster M28; the technique is illustrated by our photometric search for candidates in the radio-derived error circle, in archival HST WFPC2 images in both the F555W F814W bands of the core field of M28.

M3 - Conference Publication

VL - 238

BT - ASTRONOMICAL DATA ANALYSIS SOFTWARE AND SYSTEMS X

PB - ASTRONOMICAL SOC PACIFIC

ER -

Deconvolution of drizzled and rotated HST WFPC2 images: Faint-object photometry in crowded fields

Abstract

Authors (Note for portal: view the doc link for the full list of authors)

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