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JOA 2011-4 ■ for IOTA Supscription Purposes on Vol.15, No Journal for OccultationOccultation Astronomy Occultation 2 0 1 1 - 0 4 AstronomyFORMERLY OCCULTATION NEWSLETTER Observation report on: The Lunar Graze of ZC 2810 – 23rd April 2010 (UT) Dave Gault – [email protected] and Dave Herald – [email protected] Early on Easter Sunday morning the 24th April 2011, two teams The broad plan was to have two sites suitable for Canberra and of observers, representing 3 Astronomical Societies of Australia, met Sydney observers. Canberra observers would be on the Lachlan Valley to observe the northern lunar limb graze past the star ZC 2810 (aka Highway, south of Boorowa and Sydney observers would be on Deep- SAO 162368) a mag. 7.6 star in the constellation Sagittarius. The star fields Road, south-east of Bringelly. was predicted to be grazing 11 degrees from the northern cusp, of the As is usual with these sorts of events, much planning and weather 63% illuminated (waning) moon that was at an altitude of 76 degrees. watching occupies the minds of the observers in the days leading up Journal for Occultation Astronomy · October-December 2011 1 Journal for Occultation Astronomy OccultationAstronomyWriting articles for JOA: Dear reader, The rules below should be regarded while writing an article; using I am very sorry but this time we are really late! them will greatly facilitate the production and layout of ON! Unfortunately one reason is the result of our blocked server so we were forced to change the “paths”. The second reason is quite simple: Some of If your article does not conform to these rules, please correct it. the writers of the articles did not pay attention to the press-date September There are 3 different possibilities for submitting articles: 15th – the next date should be December 15th and I hope it will be… ■ Minimum amount of pages shall be 16 – there is no sense in producing pdf-articles (must be editable – these can be converted) less so we were waiting until the very last moment to reach that goal. We ■ unformatted Word *.doc-files containing pictures/graphs or know it is in your spare-time when you are writing articles without being their names (marked red: <figure_01>) at the desired position(s) paid for it and you better like to observe instead of writing. But think of all ■ *.txt-files must contain at the desired position the name the readers who are interested in your results and possible improvements of each graph/picture you made to your equipment: You have to write articles for JOA! We have been asked if it is possible to produce a printed version of The simplest way to write an article is just use Word as usual and the JOA. after you have finished writing it, delete all your format-commands Sure, that is possible! We made a rough calculation for the planned 4 by selecting within the push-down-list “STYLE” (in general it’s to issues per year and as result we have to increase the membership fee up to the left of FONT & FONTSIZE) the command “CLEAR FORMATTING”. 35 Euro (printing & mailing costs) for those members who are interested After having done this you can insert your pictures/graphs or mark in receiving the printed JOA. the positions of them (marked red: <figure_01>) within the text. Please do send us a mail anyway which version you want. txt-files: Details, that should be regarded One of the topics of this issue by sure will be the article written by ■ Format-commands are forbidden Wolfgang Beisker concerning the joint meeting of the European Planetary Science Congress (EPSC) and the Division for Planetary Sciences (DPS) of ■ In case of pictures, mark them within the text like the American Astronomical Society held in Nantes, France from the 2nd to <picture001> where they should be positioned th the 7 of October this year. As far as I know only Wolfgang and our profes- Name of the author should be written in the 2nd line of the article, sional friends joined that meeting – due to business-reasons I could not right after the title of the article; a contact e-mail address (even if attend it. It would be good, if some more IOTA members could come to the just of the national coordinator) should be given after the author’s next meeting in September 2012 in Madrid. It will “only” be the meeting of name. the EPSC, not together with the DPS meeting, but nevertheless an exciting conference from the European planetary scientists! IMPORTANT:Use only the end-of-line command (press ENTER) if Have a look at Bruno Sicardys & our website (http://www.lesia.obspm. it’s really necessary (new paragraph, etc.) and not when you see fr/perso/bruno-sicardy/ & www.IOTA-ES.de ) where a lot of interesting it’s the end of the line! TNO-events in 2012 are presented, three Quaoar-occultations should stay within the European focus. Sending articles to JOA: Hans-Joachim Bode, November 2011 Each country / state has a coordinator who will translate your article to English – if necessary. ■ JOA 2011-4 ■ For IOTA supscription purposes ON Vol.15, No. 1 In case there is no one (new country) please send a mail to the October 2011 · $ 5.00 · $ 6.25 OTHER · (ISSN 0737-6766) editorial staff at: [email protected] In this issue: Africa: NN America: David Dunham - [email protected] Observation report on: The Lunar Graze of ZC 2810. 1 Australia / New Zealand: NN The Graze of 37 Tauri on August 22, 2011, Europe: Pawel Maksym - [email protected] + a Spectacular First Graze . .4 Alfons Gabel - [email protected] (42) Isis – continuing Andrew’s legacy – another positive England: Alex Pratt - [email protected] UKasteroidal occultation . .6 Finland: Matti Suhonen - [email protected] Timing measurements on a Mintron video camera with EXposure Time Analyzer – EXTA. .8 Germany: Alfons Gabel - [email protected] Joint EPSC-DPS conference in Nantes, 2nd - 7th Oct. 2011 . .10 Greece: Vagelis Tsamis - [email protected] ESOP XXX Berlin – Personal Impressions. .13 Italy: NN European QUAOAR – Occultations in 2012 . .18 Japan: Mitsuru Soma - [email protected] Baily Bead observation during the Netherland: Harrie Rutten - [email protected] annular eclipse 2010 January 15. .19 Poland: Pawel Maksym - [email protected] Impressum . .20 Spain: Carles Schnabel - [email protected] 2 Journal for Occultation Astronomy · October-December 2011 Journal for OccultationAstronomyOccultation Astronomy to the event. And as seems perfectly normal for the Sydney area, the The Sydney observers only decided that the event was “GO” at Easter holidays means overcast and rain - which meant many visits to 3am, the plan to meet at the Bringelly shops, then proceed to the the Bureau of Meteorology web site to study the satellite images. The sites on Deepfields Road. Setting up the telescopes was accompanied Canberra observers’ only worry was ground fog. However the Sydney by the almost continuous barking of the neighbouring dogs, and we observers suffered total cloud cover for 3 days before the event; the worried that the police might be called to investigate the intruders. only ray of hope was provided by the on-line forecast 7Timer, which However this didn’t happen, although Wendy was asked to move on by predicted 0% cloud for the event, which in the end proved to be 100% one disgruntled householder. The sky clouded over about 15 minutes correct – just! before the first event was due, and luckily, the cloud cleared away 3 In the end, Dave Herald and Margaret Streamer of Canberra Astro- minutes before the first disappearance and a beautiful graze event was nomical Society (CAS), Brett and Wendy McMillan of Sutherland Astro- observed. The brightness of the moon, the faintness of the star and nomical Society Inc (SASI) and Tony Barry and Dave Gault of Western probably the intrusion of the disgruntled householder was too much for Sydney Amateur Astronomical Group (WSAAG) made the observing Wendy. Brett visually observed 4 good events, Tony observed 8 events team. and Dave observed 6 events. The Canberra observers set out with perfectly clear skies - with just A total of 36 events were observed and the limb plot is shown the occasional bit of ground fog on the way (yes, winter is just around on top the corner). In Google Earth and Street View the sites appeared to be The plot is read right-to-left and red are disappearance events, grey located along a stretch of road that offered good verges where you are flash events and green are reappearance events. could easily set up well off from the roadway. However this turned out Congratulations to the successful observers. Commiserations to to be totally illusory – there was a ditch along both sides of the road all observers who planned to observe but were put off by the weather for the whole length of where it was desirable to observe the graze. This or some other issue. Remember, the only definite in graze observing is limited the site locations to two access roads, one of which was peril- that you will observe zero events if you stay at home! ously close to the graze limit. To add to the dramas, Margaret’s video recorder decided to play up at the last minute - which meant she had If you wish to be included in the invitation to the next graze event, to change her plans and observe the event visually. Margaret observed please contact Dave Herald or Dave Gault. 8 events while Dave recorded 10 events on video, with the subsequent analysis showing that if he was a mere 150 meters further up the road, Thanks the moon would have passed by the star without being occulted.
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