2000A&AS..144..181B

Query : 2000A&AS..144..181B

2000A&AS..144..181B - Astron. Astrophys., Suppl. Ser., 144, 181-186 (2000/May-2)

Application of the OS-EM method to the restoration of LBT images.

BERTERO M. and BOCCACCI P.

Abstract (from CDS):

The Large Binocular Telescope (LBT), which will be available in a few years from now, has been designed for high-resolution optical/infrared imaging through coherent cophasing of the two mirrors. The structure of the process of image formation in LBT is similar to that in Computed Tomography (CT) so that it is interesting to investigate the applicability to LBT of image restoration methods developed for CT. A powerful one is the so-called Expectation Maximization (EM), which is also known in the astronomical literature as Lucy-Richardson (LR) method. However slow convergence is a drawback of this method. In the case of CT an accelerated version, based on ordered subsets of projection data (OS-EM), has been proposed. In this paper we adapt OS-EM to the problem of restoring LBT images and we show that it provides an acceleration by a factor which is roughly equal to the number of independent interferometric images of the same object.

Abstract Copyright: ∼

Journal keyword(s): image processing, data analysis

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	NGC 1288	EmG	03 17 13.2055744344	-32 34 33.299962068		12.75	12.11	11.63	12.1	~	75	0

Query : 2000A&AS..144..181B

Basic data :

NGC 1288 -- Emission-line galaxy

G (2011MNRAS,AM,...), * (GSC,Gaia), IR (IRAS,PSCz), EmG (2022ApJS), AG? (2020MNRAS), HI (HIPASS)

03 17 13.2055744344 -32 34 33.299962068 (Optical) [ 0.3731 0.5037 90 ] A 2020yCat.1350....0G

03 15 11.8211222386 -32 45 30.275592784 [ 0.3731 0.5037 90 ]

231.6979348327206 -58.0819068773973 [ 0.3731 0.5037 90 ]

-0.003 -1.174 [0.479 0.655 90] A 2020yCat.1350....0G

V(km/s) 4524.0 [~] / z(emission) 0.015206 [~] / cz 4558.66 [~] (Rad) C 2004MNRAS.350.1195M

0.3406 [0.65] A 2020yCat.1350....0G

5.0 D 1989ESOLV.C......0L

2.17384 1.77276 2 (Opt) B 2023ApJS..269....3M

B 12.75 [~] C 1989ESOLV.C......0L

V 12.11 [~] E ~

R 11.63 [~] C 1989ESOLV.C......0L

G 19.121010 [0.006739] C 2020yCat.1350....0G

I 12.1 [~] D 2005MNRAS.361...34D

J 10.059 [0.025] C 2006AJ....131.1163S

H 9.405 [0.031] C 2006AJ....131.1163S

K 9.241 [0.049] C 2006AJ....131.1163S

g (AB) 12.6400 [0.0016] B 2023ApJS..269....3M

r (AB) 11.9631 [0.0023] B 2023ApJS..269....3M

z (AB) 11.4598 [0.0027] B 2023ApJS..269....3M

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`NGC 1288`	`ESO-LV 357-0130`	`IRAS F03151-3245`	`SGC 031512-3245.5`
`AM 0315-324`	`FCC B30`	`LEDA 12204`	`Gaia DR2 5054591056106568832`
`6dFGS gJ031713.2-323433`	`GSC 07023-00002`	`2MASX J03171317-3234330`	`Gaia DR3 5054591056107082496`
`DUGRS 357-002`	`HIPASS J0317-32`	`MCG-05-08-025`
`ESO 357-13`	`IRAS 03152-3245`	`PSCz Q03152-3245`

References (75 between 1850 and 2026) (Total 75)
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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Data at NED - NASA/IPAC Extragalactic Database : NGC 1288

Link by name to the catalogue in VizieR :

`NGC 1288`	`ESO-LV 357-0130`	`GSC 07023-00002`	`HIPASS J0317-32`	`IRAS 03152-3245`
`IRAS F03151-3245`	`2MASX J03171317-3234330`	`Gaia DR2 5054591056106568832`	`Gaia DR3 5054591056107082496`

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