Astron. Astrophys. 324, L5-L8 (1997)

2. Observations

The observations presented here have been collected as part of the DENIS survey between January and May 1996 at La Silla (Chile) using the ESO 1 meter telescope equipped with the specially designed 3-channel camera (Copet, 1996). They cover an area of centered at (J2000) in three bands, namely I (0.8 ), J (1.25 ) and (2.15 ). They consist of 13 strips each involving 180 images of taken at constant RA along an arc of in declination. The overlap between two adjacent strips reaches in the Cham I cloud because of the proximity of the south pole. Wherever a star is picked up in two adjacent strips, position and flux values are averaged. Limiting magnitudes are 18, 16 and 14 at in I, J and bands, respectively, and position accuracy is in both directions.

© European Southern Observatory (ESO) 1997

Online publication: May 26, 1998

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