2022MNRAS.511.3377D

Query : 2022MNRAS.511.3377D

2022MNRAS.511.3377D - Mon. Not. R. Astron. Soc., 511, 3377-3388 (2022/April-2)

Trailed source extraction with template matching.

DU J., HU S., CHEN X. and CAO H.

Abstract (from CDS):

In optical observations of moving targets, field stars can be trailed when the telescope tracks at the speed of the targets. When these trailed sources are relatively long, faint, or distorted, the popular source extraction techniques, such as thresholding and profile fitting, tend to fail. We present a new source extraction strategy based on the template-matching method. We described the pipeline of template matching in detail and tested its performance compared with thresholding on 9 x 4320 synthetic images and 349 real images. The indicators, including recall, position extraction error, and flux extraction error, are analysed and given. The results show that template matching can obtain higher recalls and smaller position and flux extraction errors for trailed sources.

Abstract Copyright: © 2022 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society

Journal keyword(s): techniques: image processing - techniques: photometric - astrometry

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 IC 4756 OpC 18 38 39.0 +05 26 14           ~ 274 0

Query : 2022MNRAS.511.3377D

Basic data :
IC 4756 -- Open Cluster
Other object types: otypes_help 		OpC (2013A&A,OCl), Cl* (2020A&A,C,...), As* (2019AJ,[KC2019]), * (IC)
ICRS coord. (ep=J2000) : 		18 38 39.0 +05 26 14 (Optical) [ ] E 2023A&A...674A..37G
FK4 coord. (ep=B1950 eq=1950) : 		18 36 11.5 +05 23 31 [ ]
Gal coord. (ep=J2000) : 		036.3299 +05.3142 [ ]
Proper motions mas/yr : 		1.2574 -4.9145 [0.0134 0.0134 90] B 2018A&A...616A..10G
Radial velocity / Redshift / cz : 		V(km/s) -24.91 [0.09] / z(spectroscopic) -0.000083 [0.000000] / cz -24.91 [0.09]
   (Opt) A 2021A&A...647A..19T
Parallaxes (mas): 		2.0943 [0.0018] B 2018A&A...616A..10G
Angular size (arcmin): 		64.1 64.1 0 (Opt) D 2020A&A...633A..99C
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Hierarchy : number of linked objects
whatever the membership probability is (see description here ) :

: 2171 		Display criteria :

Identifiers (7) :
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IC 4756 Cl Melotte 210 [KC2019] Theia 1115 [KPS2012] MWSC 2967
C 1836+054 OCl 94.0 [KPR2004b] 450

References (274 between 1850 and 2026) (Total 274)
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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Collections of Measurements Description of Measurements

Velocities : 10    Distance : 8    Fe/H : 9    Plx : 10    PM : 12   

   

External archives :

Data at NED - NASA/IPAC Extragalactic Database : IC 4756

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