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The Hamburg Quasar Monitoring Program (HQM) at Calar Alto. II. Lightcurves of weakly variable objects

K. -J. Schramm·U. Borgeest·D. Kühl·J. v. Linde·M. D. Linnert
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Abstract

HQM is an optical broad-band photometric monitoring program carried out since Sept.~1988. We use a CCD camera equipped to the MPIA 1.2$\,$m telescope. Fully automatic photometric reduction relative to stars in the frames is done within a few minutes after each exposure, thus interesting brightness changes can be followed in detail. The typical photometric error is 1--2\,\% for a 17.5\,mag quasar. We here present lightcurves already evaluated but not shown in Paper I. We also discuss existing literature data.

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K. -J. Schramm, U. Borgeest, D. Kühl, J. v. Linde, M. D. Linnert. 1994-03-23. The Hamburg Quasar Monitoring Program (HQM) at Calar Alto. II. Lightcurves of weakly variable objects. https://arxiv.org/abs/astro-ph/9403049

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