J/A+AS/114/1 CCD UBVI photometry of NGC 6791 (Kaluzny+, 1995) ================================================================================ CCD photometry of distant open clusters: II NGC 6791 Kaluzny J., Rucinski S.M. =1995A&AS..114....1K (SIMBAD/NED BibCode) ================================================================================ ADC_Keywords: Clusters, open; Photometry, CCD Keywords: open clusters and associations: individual: NGC 6791 - HR diagram - novae, cataclysmic variables Description: Three new photometric CCD-based datasets are presented for NGC 6791. They consist of deep UBV photometry (to V_lim_=24, B_lim_=24, U_lim_=23) of the central parts of the cluster and of selected fields around it, and of relatively shallower UBVI photometry for the whole cluster (23'x23'). The data have been used to discuss the reddening, metallicity and age of NGC 6791. File Summary: ------------------------------------------------------------------------------- FileName Lrecl Records Explanations ------------------------------------------------------------------------------- ReadMe 80 . This file table1 81 3948 UBV photometry of stars from NGC 6791 field October 91, 2.1-m telescope data table2 100 15086 UBVI photometry of stars from NGC 6791 field October 92, 0.9-m data ------------------------------------------------------------------------------- See also: J/A+AS/108/151 : Berkeley 22 & Berkeley 29 CCD photometry (Kaluzny, 1994) J/A+AS/121/455 : BVI photometry of stars in Berkeley 18 (Kaluzny 1997) J/A+AS/133/25 : CCD BVI photometry of Trumpler 5 (Kaluzny 1998) Byte-by-byte Description of file: table1 table2 -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 6 I6 --- ID ID number 9- 15 F7.2 pix Xpos X coordinate (toward South); 1 pixel=0.68 arcsec 18- 24 F7.2 pix Ypos Y coordinate (toward West); 1 pixel=0.30 arcsec 26- 31 F6.3 mag Vmag V magnitude 33- 38 F6.3 mag e_Vmag rms uncertainty on V magnitude 40- 41 I2 --- o_Vmag Number of averaged V magnitude measurement 43 I1 --- q_Vmag Quality flag for V magnitude (1) 45- 50 F6.3 mag B-V []? B-V colour index 52- 57 F6.3 mag e_B-V []? rms uncertainty on B-V (2) 59- 60 I2 --- o_B-V Number of averaged B measurements 62 I1 --- q_B-V Quality flag for B-V (1) 64- 69 F6.3 mag U-B []? U-B colour index 71- 76 F6.3 mag e_U-B []? rms uncertainty on U-B (2) 78- 79 I2 --- o_U-B Number of averaged U measurements 81 I1 --- q_U-B Quality flag for U-B (1) 83- 88 F6.3 mag V-I []? V-I colour index 90- 95 F6.3 mag e_V-I []? rms uncertainty on V-I (2) 97- 98 I2 --- o_V-I []? Number of averaged I measurements 100 I1 --- q_V-I []? Quality flag for V-I -------------------------------------------------------------------------------- Note (1): q=1 means relatively poor quality Note (2): negative sigma means "unknown color" -------------------------------------------------------------------------------- Courtesy: J. Kaluzny & S.M. Rucinski ================================================================================ (End) Simona Mei [CDS] 25-Jun-1995