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| Query : 1994A&AS..108..509T |
1994A&AS..108..509T - Astron. Astrophys., Suppl. Ser., 108, 509-512 (1994/December-2)
Rotate-And-Stare: A new method for PSF estimation.
TEUBER J., OSTENSEN R., STABELL R. and FLORENTIN-NIELSEN R.
Abstract (from CDS):
We present a new and simple method for the determination of a digital Point Spread Function (PSF), utilizing the approximate circular symmetry in stellar images of normal quality. Using an optimal estimation of total intensity and object centering, the application of this type of PSF is found to be comparable to analytical or semi-analytical modelling, e.g., that employed in the DAOPHOT package (Stetson 1987). Further improvements are suggested.
Abstract Copyright: ∼
Journal keyword(s): techniques: image processing - photometric - Quasars: QSO 2237+0305
Simbad objects: 2
| Number of rows : 2 |
| 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 | QSO J2240+0321 | QSO | 22 40 30.234 | +03 21 30.63 | ~ | 705 | 1 | |||||
| 2 | Z 378-15 | AGN | 22 40 30.23447 | +03 21 30.6290 | ~ | 636 | 0 |
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