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\input ibvs2.sty
\input ibvst.sty

\begin{document}

\IBVShead{4965}{20 October 2000}

\IBVStitletl{CCD Light Curves of ROTSE1 Variables, I:}{ GSC\,3099.905 Herculis}

\IBVSauth{Bl\"attler, E.$^1$; Diethelm, R.$^2$} 

\IBVSinst{BBSAG, Schl\"usselacher 1, CH-8636 Wald, Switzerland; e-mail: blaettler-wald@bluewin.ch}

\IBVSinst{BBSAG, Rennweg 1, CH-4118 Rodersdorf, Switzerland; e-mail: diethelm@astro.unibas.ch}

\SIMBADobj{GSC 03099-00905}

\begintext

\IBVSTnam{GSC\,3099.905 = ROTSE1 173454.24+441152.2}

\IBVSTcoo{17\hr 34\mm 54.24\sec}{+44\deg 11\arcm 52.2\arcs}{2000.0}

\IBVSTobs{Private observatory Schl\"usselacher, Wald,
0.15-m refractor}

\IBVSTdet{SBIG ST-7 CCD camera}

\IBVSTfil{None}

\IBVSTcomp{GSC\,3099.933}

\IBVSTchk{GSC\,3099.1019}

\IBVSTdata{Upon request from diethelm@astro.unibas.ch} %email


\IBVSTtyp{ EW }

\IBVSTrem{
As a byproduct of the ROTSE1 CCD survey, a large number of new
variables have been discovered (Akerlof et al., 2000). In a series of
papers, we report unfiltered CCD observations for some of the close
binary systems (type EW and E) in the list of Akerlof et al.\ (2000).
GSC\,3099.905 was observed with our CCD equipment as  specified above
during 5 nights between JD\,2451746 and JD\,2451781. A total of 143 CCD
frames were measured and Figure 1 shows these observations folded with
the elements
$$
{\rm JD(min,hel)} = 2451746.4772 (5) + 0.2514358 (20) \times E.
$$
These elements of variation are deduced from a linear fit to the newly
determined normal minima from the ROTSE1 data (JDH\,2451305.7095(2), primary;
JDH\,2451311.8712(4), secondary) as well as the 8 minima (5 primary, 3
secondary)  published in BBSAG Bulletin 123.}

\IBVSfig{10cm}{4965-f1.eps}{CCD light curve (without filter) of GSC\,3099.905}

\IBVSTack{
This research made use of the Simbad data base, operated at CDS,
Strasbourg, France.}

\reference

Akerlof, C., Amrose, S., Balsano, R., Bloch, J., Casperson, D., Fletcher,
S., Gisler, G., Hills, J., Kehoe, R., Lee, B., Marshall, S., McKay, T.,
Pawl, A., Schaefer, J., Szymanski, J., Wren, J., 2000, {\it AJ}, {\bf 119}, 
1901

\end{document}
