Automatic Photometric Telescope APT80/1


Catania Astrophysical Observatory






·        Statistics

·        Main research areas

·        Most recent  multisite/multiwavelenght campaigns

·        International projects involving the APT80/1

·        Future improvements

·        Publications related to  APT80/1






Period 1992 – 2000


-         Hours of observations ~ 20.000

-         Measurements ~ 650.000

-         Typical duty cycle ³ 70%

-         Scheduled target stars  ~ 70 (~ 300 including comparisons and checks)





Main research areas


  1. Collaborative monitoring campaigns of chromospherically active stars


  1. Stellar flares


  1. Active longitudes, activity cycles and differential rotation


  1. Orbital period modulation


  1. Photometric parameters of active close binaries


  1. Ground-based support to space missions





Most recent international  multisite/multiwavelenght campaigns



  • EV Lac flare campaign 1994-1995 (Abranin et al. )
  • EV Lac flare campaign 1999   (Favata et al.)
  • AD Leo flare campaign 1999 (Guedel et al.)
  • Catania -  Calar Alto coordinated observations of HD171488 (Uwe et al.)
  • Doppler imaging of AR Lac (Zboril et al.)
  • Optical-X-ray observations of  LQ Hya  (Covino et al.)



Current international projects involving the APT80/1


  1. CataniaHanle (India) long-term study of HD52452
  2. CataniaHanle (India) observations of suspected RS CVn-type stars
  3. Observations of HD52452 (TNG proposal accepted)
  4. COROT space mission   (INAF proposal submitted)
  5. Observations of Hyades (TNG proposal accepted)
  6. Doppler imaging of AR Lac
  7. Observations of Pleiades for lithium depletion theory (Tschaepe)
  8. The Sun in Time (Villanova)
  9. Optical-X-ray observations of AR Lac (Saar)



Future improvements


Cooled photometer and Wing system filter set to carry out TiO band

Photometry of chromospherically active stars



Publications related to  APT80/1



  • 16 papers on international refereed journals
  • 4 invited contributions
  • 8 short papers and communications at meetings
  • 8 papers in progress
  • 4 PhD theses (Messina, Marino, Cafra,  Biazzo)



International Refereed Journals



  1. Long-term monitoring of active stars. X. Photometry collected in 1994

            Cutispoto G., Messina S., Rodoṇ M., 2002,  A&A submitted


  1. Simultaneous Optical and X-ray Observations of Flares and Rotational Modulation  on the RS CVn Binary HR 1099 (V711 Tau) from the MUSICOS 1998 Campaign

Garcia-Alvarez D., Foing B.H., Montes  D., Oliveira J.M., Doyle J.D.,  Messina S., , Lanza A.F., Rodoṇ M., Abbott J., Ash  T.D.C., Baldry I.K., Bedding T.R., Buckley D.A.H., Cami  J., Cao H., Catala  C.,Cheng K.P., Domiciano de Souza Jr  A., Donati J.-F., Hubert A.M., Janot-Pacheco  E., Hao J.X., Kaper  L., Kaufer  A., Leister N.V., Neff J.E., Neiner C., Orlando S., O'Toole S.J., Schaefer D., Smartt S.J., Stahl  O., Telting J., Tubbesing  S., 2002, A&A  in press.


  1. Temperature and size of starspots from line depth ratios

Catalano S., Biazzo K., Frasca A., Marilli E.,  Messina S., Rodoṇ M., 2002, AN 3/4, 260-264


  1. The Catania Automatic Photoelectric Telescope on Mt. Etna: a systematic study of magnetically active stars

Rodoṇ M., Cutispoto G., Lanza A.F.,  Messina  S., 2001, AN 322, 333-342


  1. Long-term starspot evolution, activity cycle and orbital period variation of SZ Piscium

Lanza A.F., Rodoṇ M., Mazzola L., Messina S., 2001, A&A 376, 1011-1030


  1. Long-term monitoring of active stars. IX. Photometry collected in 1993

            Cutispoto G., Messina S., Rodoṇ M., 2001,  A&A 367, 910-930


  1. The "Rotation-Activity Connection": its extension to photospheric activity diagnostics

Messina S., Rodoṇ M., Guinan E. F., 2001, A&A 366, 215-228


  1. Serendipitous discovery of an Irregular and a Semi Regular type variable in the field of BY Draconis

Messina S., Marino G., Rodoṇ M., Cutispoto G., 2000, A&A 364, 706-711


  1. Photometric and spectroscopic studies of cool stars discovered in EXOSAT

X-ray images. IV. The northern hemisphere sample.

Cutispoto G., Pastori L., Guerrero M.A., Tagliaferri G.,  Messina

S., Rodoṇ M., De Medeiros J.R., 2000, A&A 364, 205-216


  1. The magnetic activity cycle of II Pegasi: results from twenty-five years of wide-band photometry.

Rodoṇ M., Messina S., Lanza A.F., Cutispoto G., Teriaca L., 2000, A&A 358, 624-638


  1. Classification of EUV stellar sources detected by the ROSAT WFC.  I.  Photometric and radial velocity studies

Cutispoto G., Pastori L., Tagliaferri G., Messina S., Pallavicini R., 1999, A&AS 138, 87-99


  1. ISOPHOT Observations of the RS CVn-Type  Star HR 7428

Rodoṇ M., Pagano I., Cutispoto G., Marino G., Messina

 S., Leto, G., 1998, Ap&SS 255, 237-238


  1. Coordinated observations of the red dwarf flare star EV Lac in 1994 and 1995

Abranin E.P., Alekseev I.Yu., Avgoloupis S., Bazelyan L.L., Berdyugina S.V., Cutispoto G., Gershberg R.E., Larionov V.M., Leto G., Lisa-chenko V.N.,  Marino G., Mavridis L.N.,

Messina S., Mel'nik V.N., Pagano  I., Pustil'nik S.V., Rodoṇ  M., Roizman  G.Sh., Seiradakis J.H., Sigal G.P., Shakhovskaya N.I., Shakhovskoy D.N., Shcherbakov V.A., 1998, Astron. Astrophys. Trans. 17, 221-262


  1. Starspot evolution, activity cycle and orbital period variation of the prototipe active binary RS Canum Venaticorum

Rodoṇ M., Lanza A.F., Catalano S., 1995, A&A 301, 75-88


  1. Optical variability of SAO 91772: a serendipitous X-ray source

Rodoṇ M., Cutispoto G.,  Messina S., 1994, A&A 281, 756-758


  1. A long-term program of monitoring active close binaries  with the Catania automated photometric telescope

Rodoṇ M., Cutispoto G.,  1994, MmSAI, 64, 83



Invited contributions



  1. The Catania Automatic Photoelectric Telescope on Mt. Etna: A Systematic Study of Magnetically Active Stars

Rodoṇ M., Cutispoto G., Lanza A. F., Messina S., 2001. In: Annual Scientific Meeting of the Astronomische Gesellschaft at the Joint European and National Meeting JENAM 2001, Astronomische Gesellschaft Abstract Series, Vol. 18


  1. Observations and scientific programs at the “M.G. Fracastoro” station of Catania Astrophysical Observatory

Frasca, al., 1999, Small-Size Italian Telescopes: Use and Perspective, national meeting at  Monte Porzio – Roma, 14-15 December 1999.


  1. A Long-Term Program of Monitoring Active Stars with the Catania Automated Photometric Telescope

 Rodoṇ M., Cutispoto G., 1994, Cool Stars, Stellar Systems and the Sun, 8th Cambridge workshop, Jean-Pierre Caillaut (ed.), ASP Conf. Series, 64, 459


  1. Automated Photometric Telescopes in the Study of Active Stars

 Rodoṇ M., 1992, Cool Surface Inhomogeneities on Late-type Stars. Proceedings of a colloquium held at  Armagh Observatory, Northern Ireland 24-27 July 1990. P. B. Byrne & D. J. Mullan (eds.), LNP, 397, 201


Short papers and Communications at meetings



  1. A systematic search of starspots cycles by robotic observations at Catania Astrophysical Observatory

Messina S., Rodoṇ M., Cutispoto G., 2002, Poster Paper at the 1st Potsdam Thinkshop on Sunspots and Starspots, eds.  K. Strassmeier & A. Washuettl, AIP, p. 73-76


  1. Spots and Plages on HK Lac

Catalano, S., Marino, G., Frasca, A., Marilli, E., Messina, S., Cutispoto, G., Rodoṇ, M., 2002, Poster Paper at the 1st Potsdam Thinkshop on Sunspots and Starspots, eds.  K. Strassmeier & A. Washuettl, AIP, p. 47-50


  1. The EUV source HD 52452: discovery of a likely triple system

Messina S., Cutispoto G., Pastori L., Rodoṇ M., Tagliaferri G., 2001, IAU Comm. 27&42 IBVS 5014


  1. Multiwavelength analysis of Gl 355 (LQ Hya)

S. Covino, G. Tagliaferri, E. Bertone, G. Cutispoto, S. Messina, M.R. Panzera,

L. Pasquini, R. Pallavicini, S. Randich, M. Rodoṇ, J. Setiawan. 2001: in F. Favata and J. Drake (eds.) " Stellar Coronae in Chandra and XMM-Newton Era", ASP Conference Series, vol.


  1. H_alpha line and photometric variability in magnetically active stars

Catalano S.,  Rodoṇ M., Frasca A., Marilli E., Marino G., Messina, S., 2000. In: C. Ibanoglu (Ed.) Variable Stars as Important Astrophysical Tools, Kluwer Academic Publishers, Netherland, Vol. 544, p.687


  1. Photometry of Cool Stars Detected in EUV All-Sky Surveys

Cutispoto G., Tagliaferri G., Kurster M. Messina S, Rodoṇ M., 1998.

            In:  R. A. Donahue and J. A. Bookbinder (eds.) ''Cool Stars, Stellar System and

the Sun'', 10th Cambridge workshop, A.S.P. Conf.Ser. Vol. 154, 1397 


  1. ISOPHOT Observations of the RS CVn-type  Star II Peg

Rodoṇ M., Pagano I., Cutispoto G., Marino G., Messina S, Leto G., Trigilo C., Umana G., & Neri R., 1997. In:  R. A. Donahue and J. A. Bookbinder (eds.) ''Cool Stars, Stellar System and  the Sun'', 10th Cambridge workshop, A.S.P. Conf.Ser. Vol. 154, 1446 


  1. Ph.D. Thesis : “Long- and short-term photometric variability of late-type stars”

Messina S., 1998 (see COOLNEWS  32, 10)