New version of GRAZPREP (4.20)

New version of GRAZPREP (4.20)

Dear all,
I just uploaded a fully revised version of GRAZPREP (now 4.20) to be downloaded from (www.grazprep.com) . The major change is the implementation of all Gaia DR2 stars yielding Gaia proper motions, parallax and radial velocity. These are now 98% of all zodical stars of the former XZ80Q catalogue! Even some of the brightest stars have Gaia positions now: the brighest being delta Sagittarii with a visual magnitude of 2.7. For some brighter stars we still have to rely on the Hipparcos-positions. Note that the measuring array of Gaia has problems with bright stars. This might affect stars brighter than 7 mag. where the center of light is harder to define. The irradiation factor inreases with brightness. But still there are improvements to former catalogues.
On www.grazprep.com you will also find revised 2018 grazing occultation prediction files for the rest of the year that need to be downloaded as well (at least the one matching your area). The limitimg magnitude is 9.3 (13.0 for the lunar eclipses). A prediction file of grazes during the upcoming lunar eclipse of Jan. 21, 2019, is also available.
Before installing the new version UNINSTALL any former version you have! You will find an Unins000.EXE in the GRAZPREP-folder. Former prediction files and your setting data will NOT and must not be deleted.
The password for the installation is 'IOTA/ES' as before. During installation be sure NOT to use the Windows-program folder offered as a default, but select your self created GRAZPREP-folder and install GRAZPREP there.
Please report any difficulty you might have to me for a quick support from my side whereever possible.
Clear skies to all and hopefully many successful occultations!

Kind regards,
Eberhard Riedel
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IOTA/ME members participated in two Meetings in the USA and Germany

36th European Symposium on Occultation Projects (ESOP) was held in Freiberg, Germany since September 15th -19th 2017. Two members of IOTA/ME; Fatemeh Montazeri Najafabadi and Zeinab Sadat Lesani was participate in this symposium and has presentation as a virtual conferencing. Miss Montazeri has lectured about" Simulation of Asteroid's rotation" about 15 minutes. Also Miss Lesani has lectured about" Introducing a new mobile application for submit and timing (made in IOTA/ME)" about 15 minutes, too.
Also Ms. Lesani had a same presentation (before ESOP) at the 2017 Annual Meeting of the International Occultation and Timing Association. It was held in USA since September 9&10, 2017.

IOTA/ME members participated in two Meetings in the USA and Germany

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A new mobile application for submit and timing (Made in IOTA/ME)

“SKYTIMING” is an accurate timing application (the desired accuracy is 0.01 seconds) for visual observation. It is always available and standalone. Moreover, it eliminates problems of other methods and has an easy access, good accuracy by using GPS for timing and the ability to perform all the steps by itself.
The developer of this application is Zeinab Sadat Lesani "permanent member of IOTA/ME".

You can download this application from http://www.iota-me.com/skytiming.html since 29 September 2017!
This is the first version of this application and it will be developed in next versions.

A new mobile application for submit and timing (Made in IOTA/ME)

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An agreement between IOTA/ME and the University of Garmian-Kurdistan-Iraq

IOTA/ME and the University of Garmian-Kurdistan-Iraq have agreed to sign an agreement. According to this agreement, University of Garmian officially became a member of (IOTA/ME) in Kurdistan-Iraq and has the opportunity to hold a seminar, workshop, and international conference in the fields of occultation, eclipse, planetary science, astrobiology and other related subjects.
This agreement has been signed on 16/8/2017 and is eligible for five years.

An agreement between IOTA/ME and the University of Garmian-Kurdistan-Iraq

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Publication of IOTA/ME members' paper in NEW ASTRONOMY JOURNAL

Publication of IOTA/ME members' paper in NEW ASTRONOMY JOURNAL

A new paper with title “First light curve analysis of the high-amplitude Delta Scuti star GSC 4552–1498” has been recently accepted and published in the ISI journal New Astronomy. The Authors are “S. J. Jafarzadeh” and “A. Poro”.

In this paper, a HADS variable star is observed at three filter in Alborz observatory in Karaj. By analyzing its light curves, a new ephemeris and oscillation modes were presented. Furthermore, some of the star’s physical parameters including its mass, radius and luminosity were calculated and Two color diagram of different phases of the star were depicted.

This paper is accessible by the link below:
http://www.sciencedirect.com/science/article/pii/S1384107616301774
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Asteriod occultation (22 Kalliope and Linus) Dec. 2016


Occultaion of 9/2 magnitude star by two asteroid.
On 24 Dec 2016 at 22:53 (UT), Kalliope and Linus (which is the known companion of Kaliope) will occultation with star TYC 2430-01124-1.
Here is a link to Derek’s Google map showing the predicted path for both Kalliope and Linus:

http://www.poyntsource.com/New/Google/Kalliope_Linus_2.HTM
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