Publication of IOTA/ME members' paper
2014/12/09 23:49
Three articles from IOTA-ME members' scientific activity have published in journals of Institute for Scientific Information (ISI journals) during last 2 years.
ABSTRACT
New observations of the eclipsing binary system NR Cam were carried out using a CCD in B,V, and R filters and new times of light minimum and new ephemeris were obtained. The B, V, and R light curves were analyzed using both the Binary Maker 3.0 and PHOEBE 0.31 programs to determine some geometrical and physical parameters of the system. These results show that NR Cam is an overcontact binary and that both components are Main Sequence stars. The O'Connell effect on NR Cam was studied and some variations in spot parameters were obtained over the different years.
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Second summer school of IOTA/ME will be held (2014)
2014/07/27 07:42
For more information, Iranian students and astronomers can visit the summer school website: www.iota-me.com/school.php
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The First Guilan (Province) Astronomy Summer School
2014/07/03 02:16
Faculty of Sciences, University of Guilan, Rasht
Organizers: The first Guilan astronomy summer school is organised by North Star Scientific Research Institute (NSSRI), International Occultation Timing Association Middle East section (IOTA/ME) and Research Association on Meteor and Meteorite(RAMM).
Subjects: Variable stars, Exoplanets, Meteor showers, Meteorites, Occultations
For registration: www.nssri.ir
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(198) Ampella connects IOTA-ES and IOTA-ME
2014/06/13 16:24
This will be a chance to an intensifiedcooperation.
A detail of the shadow path running over Iran shows figure B. The (Green) center line crosses Qazvin (Iran) - about 140 km north-west of Teheran. So there might be in this region some observers to join. The both blue lines are the (predicted) limits of the shadow path.
I think around Qazvin one can find suitable observation places. Figure A and B are from a publication by Derek C Breit, details you may find at: www.poyntsource.com/New/Global.htm under “Ampella”.
The prediction from Steve Preston (now president of IOTA/USA) shows a probability of over 50% near the (green) central line. Please consider: Our models of astronomical events try to calculate what will happen in nature. But our basic data are always with limited accuracy and rounding. So we can help with our observations to extend the knowledge in any situation. You may find further details at www.asteroidoccultation.com
But one has to prepare for this observation very carefully. The occultation will be near the horizon, the time will be about 23:00h UTC, (local time in Iran then 02:30 on June 24 !!). And because brightness of star and minor planet are not very different, the drop of light during the occultation will be only 0.5 Mag.
To observe this “visibly” is nearly impossible. The best way to get a reliable measurement will be a telescope more than 20 cm and a video camera that can display a star with 11 Mag. You should be sure that your system is powerful to get this. In the meantime you should train to find the star just north of Scorpius.
This short introduction has two intentions:
FIRST: to inform you about this occultation
SECOND: To find participants who are willing to get in contact to me – by e-mail and by mobile phone. I would like to get in contact to you (in English) via mobile phone during the time of observation. At your region the occultation will be about 4 minutes earlier. Via phone you explain what you are seeing and I will explain some times later what I am seeing. That is my idea of a direct collaboration.
Last but not least: we need a clear sky to observe all this, if the weather in my region will be cloudy there will be other observer at distant places to support the collaboration under a clear sky (I hope that).
All our data will be collected by Eric Frappa, France. For that it is necessary to get the coordinates of your observation place, the time of the event correlated as good as possible to UTC and some information of your equipment. But that should be declared when we interchange e-mails.
Try hard to join this observation – but in any case there will be another chance.
Dr. Eberhard Bredner Ginsterweg 14 59229 Ahlen-Dolberg; GERMANY
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An Asteroid Occultation in Iran and other countries in Middle East
2014/05/14 16:26
Something that is noticeable in this occultation:
- Its high rank asteroid that is 99.
- The magnitude asteroid is 12.5 that it causes to be seen by powerful eyes.
- The magnitude star occult is 8.4 that it find star very easy.
- The duration is expected to be about 7.9 second and star will drop 5.6 magnitudes during the process.
As seen from Shiraz, the time of central occultation is 17:24 UT. On this night the moon is on below horizon. The occultation path will be possible to observe in country Jordon, Kuwait, South Iran, Pakistan and India. Coordination took place between the Middle East and North America IOTA, observing the events in Iran and team supervision by Mr. Paul Maley (Vice-President of IOTA), which will be based in Kuwait, jointly done.
Hojatola Hekmat’zade
President in Occultation and TNOs Dep. IOTA/ME
hekmat@iota-me.com
+989364206300
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