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
    Constraining the TeV gamma-ray emission of SN 2024bch, a possible type IIn-L from a red supergiant progenitor: Multiwavelength observations and analysis of the progenitor
    We present very high-energy optical photometry and spectroscopic observations of SN 2024bch in the nearby galaxy NGC 3206 (∼20 Mpc). We used gamma-ray observations performed with the first Large-Sized Telescope (LST-1) of the Cherenkov Telescope Array Observatory (CTAO) and optical observations with the Liverpool Telescope (LT) combined with data
    Abe, K. et al.

    Fecha de publicación:

    10
    2025
    Bibcode
    2025A&A...702A.125A
    Número de citas
    0
  • Con árbitro
    Revisiting symbiotic binaries with interferometry: II. New PIONIER data
    Symbiotic stars, which generally comprise a red giant and an accreting white dwarf, are excellent laboratories to understand mass transfer in long-period binaries. One of the fundamental questions is how mass is transferred from the red giant to the white dwarf. We used interferometric measurements made with the VLTI/PIONIER instrument, combined
    Boffin, Henri M. J. et al.

    Fecha de publicación:

    10
    2025
    Bibcode
    2025A&A...702A.151B
    Número de citas
    0
  • Con árbitro
    Testing the performance of cross-correlation techniques to search for molecular features in JWST NIRSpec G395H observations of transiting exoplanets
    Cross-correlations techniques offer an alternative method to search for molecular species in James Webb Space Telescope (JWST) observations of exoplanet atmospheres. In a previous article, we applied cross-correlation functions for the first time to JWST NIRSpec/G395H observations of exoplanet atmospheres, resulting in a detection of CO in the
    Esparza-Borges, Emma et al.

    Fecha de publicación:

    11
    2025
    Bibcode
    2025MNRAS.543.3456E
    Número de citas
    0