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This article has an erratum: [https://doi.org/10.1051/0004-6361/201220824e]


Table 1

Distribution of observations of NGC 7492 for each filter.

Date NVa tV(s)b NRa tR(s)b NIa tI(s)b

20041004 7 60–200 7 150–180
20041005 16 60–120 14 100
20060801 8 120 7 100
20070804 6 240 7 100–180
20070805 4 240 3 120–180
20070904 8 180–240 8 120–180
20070905 8 180 8 120
20090107 4 100 5 100–300
20090108 5 300 5 220–300
20120628 37 90–180
20120629 16 200

TOTAL: 119 54 10

Notes.

(a)

NV, NR, and NI are the number of images taken for the filters V, R, and I.

(b)

tV, tR, and tI are the exposure times, or range of exposure times, employed during each night for each filter.

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