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THE NEW SECTION SSV-UAI-GRAV

THE NEW SECTION SSV-UAI-GRAV. PADOVA 2010 March 21 Arne Henden meets SSV UAI GRAV by Ivo Peretto . The new union…. 15-17 May 2009 An important date which establishes the new collaboration between the SSV UAI and GRAV. Group photo at the last meeting of Marana Crespadoro (VI)

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THE NEW SECTION SSV-UAI-GRAV

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  1. THE NEW SECTION SSV-UAI-GRAV PADOVA 2010 March 21 Arne Henden meets SSV UAI GRAV by Ivo Peretto

  2. The new union…. 15-17 May 2009 An important date which establishes the new collaboration between the SSV UAI and GRAV Group photo at the last meeting of Marana Crespadoro (VI) Photo by Riccardo Papini

  3. The SSV UAI The SSV UAI (Union of Italian Amateur Astronomers Variable Stars Section ) is the historical section of the italian variable stars observers headed by Angelo Frosina

  4. Il G.R.A.V. The Astronomical Research Group was founded in 2004 by two amateur astronomers, Flavio Zattera and Ivo Peretto, as an alternative to SSV UAI, with the intention of promoting culture and the study of variable stars.

  5. The collaboration • Since the beginning the atmosphere between the two groups was friendly, and it developed into the National Meeting, who took place in the following townes: • Prato 2004 • Montarrenti (Siena) 2005 • Ravenna 2006 • Padova 2007 • Marana di Crespadoro (VI) 2009

  6. The structure of the SSV UAI GRAV The first fundamental step of this collaboration was the construction of the website within the portal, based on the protocol Wiki that allows the complete autonomy of the individual subsections. Chief of this new section is Ivo Peretto

  7. Site structure: homepage Current events and news to stay informed Common section dedicated to beginners and introduction to variable stars Access links to individual subsections

  8. THE SUBSECTIONS After 5 years of collaboration between SSV UAI and GRAV could some experience on the target to be proposed. It was thus decided to create 4 subsection as follows: SSV UAI GRAV “SKY LIVE” PROJECT I.Peretto VISUAL SECTION F.Verza EB SECTION M.Vincenzi RR LYR SECTION AND SHORT PERIOD VARIABLE STARS R.Papini

  9. STRUCTURE OF THE SUBSECTION Each chairman is free to decide how to organize its own section, but in any case there will be always a footprint common with the other sections. Here below there is an example of the Section RR_ Lyrae variable stars:

  10. 1.Introduction of Variable Star Physical and more

  11. 2.How to send data

  12. 3.Stars to observe, period, visibility, ephemeris For each star of the program you can download the map with the reference stars and all the data you need for the observation

  13. 3.Stars to observe, period, visibility, ephemeris With this page you can organize your obervations

  14. 4.Link section

  15. Brief description of each section • VISUAL SECTION • RR LYR SECTION AND SHORT PERIOD VARIABLE STARS • EB SECTION • “SKY LIVE” PROJECT

  16. VISUAL SECTION Although it may seem anachronistic to estimate the variable stars in view, we think that this section can help a neophyte to take the first steps toward the comprehension of the variable stars. Particular attention was given to estimation methods such as fractional method, the method of Pogson or of Argelander, which are all explained in the site. There are also stars, who because of their brightness, can be estimated only with the visual method or with a photometer; for example the case of Epsilon Aurigae.

  17. SHORT PERIOD VARIABLE STARS This subsection is introduced by Riccardo Papini after this section

  18. EB SECTION This subsection is introduced by Marco Vincenzi after this section

  19. “SKY LIVE” PROJECT This section is a novelty. We had the chance to create a working group that uses the remote fully robotic telescopes placed in Pedara (CT) on the slopes of Etna, in order to observe with the aid of the CCD variable stars. The Skylive is a new and innovative project of the UAI that allows the acces to every recorded person and use remote telescopes, CCD camera and filters (the Tele4 has BVRI filters). This project is not dedicated only to variable stars so we decided to observe variable stars which can be estimated just once a week; then the choice has fallen on Cepheid variable stars. Periodically, the chief Ivo Peretto, establishes the targets. www.skylive.it

  20. “SKY LIVE” PROJECT TELESCOPE: Model: 12” MEADE LX200 Focal lenght: 1840 f/6.13 CCD: ST10XME Field: 18.7’ x 27’7 Photometric Filters: VBRI

  21. “SKY LIVE” PROJECT Just download this light program to be connected to remote telescopes and give your contribution to the study of variable stars.

  22. “SKY LIVE” PROJECT Multifilters observations of BB HER (guide project)

  23. “SKY LIVE” PROJECT preliminary analysis of BB HER Analysis of data only in V-band

  24. “SKY LIVE” PROJECT preliminary analysis of BB HER After preliminary analysis of raw data it was possible to calculate the O-C data + 0.12 days in line with the predictions of astronomers for this star

  25. “SKY LIVE” PROJECT The future of SKYLIVE An interesting program that we would like to develop for 2010 includes 1) New Suspect Variable (NSV) 2) Novae (AAVSO program)

  26. Plans for the near future There are many ideas that we would like to develop short-term 1) completion of the Internet site, in every section 2) developing a “enter level program” for beginners 3) unification of methods of observation and estimation of variable stars using CCD 4) creating an online database 5) development of multi-band photometry with the telescope remotely Skylive of UAI 6) creating a section dedicated to the deepening of issues related to the study of variable stars with particular attention to astronomical data analysis software 7) increased collaboration with professional astronomers and with associations of variability in the world as the AAVSO 8) formulation of a course for beginners variability propose national amateur groups 9) greater involvement of associations of amateur astronomers to study variable stars through participation in national meetings and promotion campaigns

  27. There are many challenges that await us in the next future, but the enthusiasm shown by our members with their desire to grow makes us believe that we had taken the right direction. • A SPECIAL THANKS TO: • SUBSECTIONS CHAIRPERSONS • Riccardo Papini • Marco Vincenzi • Fabio Verza • COLLABORATORS • Alessandro Marchini • -Stefano Mandelli WE LOOK FORWARD TO THE NEXT MEETING 15-16 MAY 2010 AMELIA (TR) VI° MEETING DELLE STELLE VARIABILI THANKS Ivo Peretto

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