Photometry group of Višnjan School of Astronomy 2005 Ljuban Jerosimić, Elektrotehnicka skola Nikola Tesla (Beograd), Visnjan Observatory Aleksandar Cikota, V. gimnazija (Zagreb), Visnjan Observatory M A C E 2 0 0 6 - M a y 1 2 – 1 4 - V i e n n a, A u s t r i a
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Photometry group of Višnjan School of Astronomy 2005 Ljuban Jerosimić, Elektrotehnicka skola Nikola Tesla (Beograd), Visnjan Observatory Aleksandar Cikota,
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Photometry group of Višnjan School of Astronomy 2005
Photometry group of Višnjan School of Astronomy 2005
Ljuban Jerosimić, Elektrotehnicka skola Nikola Tesla (Beograd), Visnjan Observatory
Aleksandar Cikota, V. gimnazija (Zagreb), Visnjan Observatory
Ljuban Jerosimić, Elektrotehnicka skola Nikola Tesla (Beograd), Visnjan Observatory
Aleksandar Cikota, V. gimnazija (Zagreb), Visnjan Observatory
M A C E 2 0 0 6 - M a y 1 2 – 1 4 - V i e n n a, A u s t r i a
About Višnjan
• Why are we interested in the light curve?– Rotation period
– Shape of the asteroid
– Constitution of the asteroid
Introduction
• Learn how to use a remote telescope• Learn how use software for astrometry and photometry• Determine the light curve (rotation period, shape and constitution) of various asteroids• Research of TNO-s in the VOID
Goals:Goals:
Photometry group members: (from left) Ljuban Jerosimić, Petra Korlević, Aleksandar Cikota, Maja Hren
Team leader: Reiner Stoss
• remote telescope (MEADE Schmidt Cassegrain 0.3m) + CCD SBIG STL-1001E lacated on OAM – Observatorio Astronomico de Mallorca (MPC 620
Software
• MPO Canopus
- a full-featured astrometry and photometry program capable of providing high accuracy results in both
fields • Astrometrica - a interactive software tool for scientific grade
New Variable star New Variable star discoverydiscovery
• All our images we send to the light curve database to Raoul Behrend (Geneva, Switzerland) who noticed that one star, on the images of (381) Myrrha, changes the brightness
GSC 6321.0798 (OAM2)
R.A.: 19:52:35.76
Dec.: -20°05'14.6”
• Iowa Robotic Observatory (IRO) located at Winer Observatory in Arizona, USA Latitude: N 31° 39' 53“ Longitude: W 110° 36' 03“ Elevation: 1515m
• Rigel robotic telescope (37 cm diameter, f/14 Cassegrain reflector from Torus with FLI SITe-003 CCD camera)
GSC 6321.0798 (OAM2) CONCLUSIONS
• Algol type (EA)
• Lirae type (EB)
• W Uma type (EW) – contact system
• Period: 8.59h
• Peak to peak variability: 0.55mag
• We know for 30 000 variable stars, but we know for only a few hundreds contact eclipsing binary systems