2002A&A...387L..21T

Query : 2002A&A...387L..21T

2002A&A...387L..21T - Astronomy and Astrophysics, volume 387, L21-24 (2002/5-4)

Diffraction-limited CCD imaging with faint reference stars.

TUBBS R.N., BALDWIN J.E., MacKAY C.D. and COX G.C.

Abstract (from CDS):

By selecting short exposure images taken using a CCD with negligible readout noise we obtained essentially diffraction-limited 810nm images of faint objects using nearby reference stars brighter than I=16 at a 2.56m telescope. The FWHM of the isoplanatic patch for the technique is found to be 50 arcseconds, providing ∼20% sky coverage around suitable reference stars.

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Journal keyword(s): techniques: high angular resolution - instrumentation: detectors - globular clusters: individual: M 13

Simbad objects: 4

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Number of rows : 4
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 * zet Boo ** 14 41 08.95158 +13 43 41.8967 3.88 3.83 3.78     A1V 107 0
2 M 13 GlC 16 41 41.634 +36 27 40.75     5.8     ~ 2190 0
3 * 61 Cyg ** 21 06 53.95 +38 44 57.9           ~ 176 0
4 HD 203991 ** 21 25 09.4792389463 +18 27 45.415946711           A0 18 0

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