Image sharpening of time-tagged counts from a photon counting detector - Application of a modified Wiener filter

Bibcode
1989MNRAS.238..791R
Redfern, R. M.; Devaney, M. N.; O'Kane, P.; Ballesteros Ramirez, E.; Gomez Renasco, R.; Rosa, F.
Referencia bibliográfica

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 238, May 15, 1989, p. 791-806. Research supported by the University College Galway, Mayo County Council, Irish Department of Education, and Dublin Institute for Advanced Studies.

Fecha de publicación:
5
1989
Número de autores
6
Número de autores del IAC
2
Número de citas
7
Número de citas referidas
7
Descripción
A method for applying a modified Wiener filter to time-tagged single photon data is proposed which can preprocess the data for use by a wide range of image sharpening algorithms. The method is applied to data from the 50-cm Roque de los Muchachos Observatory telescope, resulting in near diffraction limited images of the bright triple-star system ADS6650 with a high dynamic range at extremely low counting rates. The method can be used, with a 1.5-m telescope, for fields containing reference stars as faint as 16.75 mag.
Tipo
Con árbitro
Telescopios

Te puede interesar

  • Con árbitro
    TESS and ESPRESSO discover a super-Earth and a mini-Neptune orbiting the K-dwarf TOI-238*
    The number of super-Earth and mini-Neptune planet discoveries has increased significantly in the last two decades thanks to transit and radial velocity (RV) surveys. When it is possible to apply both techniques, we can characterise the internal composition of exoplanets, which in turn provides unique insights on their architecture, formation and
    D'Odorico, V. et al.

    Fecha de publicación:

    5
    2024
    Bibcode
    2024A&A...685A..56S
    Número de citas
    0
  • Con árbitro
    Dramatic Drop in the X-Ray Polarization of Swift J1727.8–1613 in the Soft Spectral State
    Black hole X-ray binaries exhibit different spectral and timing properties in different accretion states. The X-ray outburst of a recently discovered and extraordinarily bright source, Swift J1727.8–1613, has enabled the first investigation of how the X-ray polarization properties of a source evolve with spectral state. The 2–8 keV polarization
    Svoboda, Jiří et al.

    Fecha de publicación:

    5
    2024
    Bibcode
    2024ApJ...966L..35S
    Número de citas
    0
  • Con árbitro
    Quasars with flare/eclipse-like variability identified in ZTF
    Active galactic nuclei (AGNs) are known to exhibit optical/ultraviolet variability and most of them can be well modelled by the damped random walks. Physical processes that are not related to the accretion disc, such as tidal disruption events (TDEs) or moving foreground dusty clouds, can cause flare-like and eclipse-like features in the optical
    Zheng, Zhiyuan et al.

    Fecha de publicación:

    6
    2024
    Bibcode
    2024MNRAS.530.3527Z
    Número de citas
    0