My occultations web page

Sometime, an asteroid, a comet, a planet or a satellite passes in front of a star. The measurement of the start and the end of the occultation, can provide very high accuracy measurement. Then, we can measure the diameters of the asteroids, their shapes and orbits. We can also detect rings, or satelites of the asteroid.
Drawing from Iota

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2019 January 1th, (6869)Funada occults TYC 760-00880-1 (Positive)
Path through Europe, Local circonstances
Setup: Vintage Celestron c8, 1"1/4 .5x focal reducer, Watec 910 HX/RC video camera, Iota VTI v3 (time inserter + pps GPS), analog video capture StarTech SVID2USB23, Occurec software, modified Losmandy G11 Mount and MCMT32 drive.
Positive observation. The Tangra analysis => a positive report was sent to planoccult mailing list. Euraster was able to make theses cords.

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2019 January 1th, (133)Cyrene occults TYC 7-23-1 (Positive)
Path through Europe, Local circonstances
Setup: Vintage Celestron c8, 1"1/4 .5x focal reducer, Watec 910 HX/RC video camera, Iota VTI v3 (time inserter + pps GPS), analog video capture StarTech SVID2USB23, Occurec software, modified Losmandy G11 Mount and MCMT32 drive.
Hard observation due to high sun elevation (-7°), but succesfull occultation. The Tangra analysis => a positive report was sent to planoccult mailing list. 

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2018 December 24th, TNO (145451) 2005 RM43 occults UCAC4 534-010144 (Negative)
RIO-TNO path, Lucky-Star path
Orbit of the asteroid
Setup: Vintage Celestron c8, Atik One 6.0 CCD camera, modified Losmandy G11 Mount and MCMT32 drive.

Good observation, but there was no occultation => a negative report was sent to planoccult mailing list.  Shape calculated by Euraster from observations of this occultation.

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2018 September 10th, (31539) 1999D1 occults UCAC4 334-213267 (Positive)
Path through France, and local circonstances,
Setup: Vintage Celestron c8, 1"1/4 .5x focal reducer, Watec 910 HX/RC video camera, Iota VTI v3 (time inserter + pps GPS), analog video capture StarTech SVID2USB23, Occurec software, modified Losmandy G11 Mount and MCMT32 drive.
Positive observation despite faint star (The 910HX/RC camera was used at shutter x16).  This is the very first observation of this asteroid by the occultation method. The occultation took place 21 secondes ahead of the scheduled time. The Tangra3 analysis. A positive report was sent to planoccult mailing list.

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2018 September 7th, (4131) Stasik occults UCAC4 337-109265 (Negative)
Path through southern France, and local circonstances,
Setup: Vintage Celestron c8, 1"1/4 .5x focal reducer, Watec 910 HX/RC video camera, Iota VTI v3 (time inserter + pps GPS), analog video capture StarTech SVID2USB23, Occurec software, modified Losmandy G11 Mount and MCMT32 drive.
Good observation, but there was no occultation => a negative report was sent to planoccult mailing list. 

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2018 September 1, (816) Juliana occults UCAC4 448-003951 (Negative)
Path through southern France, and local circonstances,
Setup: Vintage Celestron c8, 1"1/4 .5x focal reducer, Watec 910 HX/RC video camera, Iota VTI v3 (time inserter + pps GPS), analog video capture StarTech SVID2USB23, Occurec software, modified Losmandy G11 Mount and MCMT32 drive.
Good observation, but there was no occultation => a negative report was sent to planoccult mailing list. 

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2018 July 17th, (268)Adorea occults star UCAC4 340-119766 (Positive)
Path through the world, path through southern France, and local circonstances,
Setup: Vintage Celestron c8, 1"1/4 .5x focal reducer, Watec 910 HX/RC video camera, Iota VTI v3 (time inserter + pps GPS), analog video capture StarTech SVID2USB23, Occurec software, modified Losmandy G11 Mount and MCMT32 drive.
Positive observation despite faint star and moderate seeing. The Tangra analysis.  A positive report was sent to planoccult mailing list. For this occultation 4 positives reports and 2 négatives was sent to planoccult mailing list. So Eric Frappa, from Euraster was able to make theses cords. You can also have a look at the video of the occultation.

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2018 February 10th, (2951)Perepadin occults star TYC 2983-01396-1 (Negative)
Path through the world, path through southern France, and local circonstances,
Setup: Vintage Celestron c8, 1"1/4 .5x focal reducer, Watec 910 HX/RC video camera, Iota VTI v3 (time inserter + pps GPS), analog video capture StarTech SVID2USB23, Occurec software, Losmandy G11 Mount and MCMT32 drive.
Good observation, but there was no occultation => a negative report was sent to planoccult mailing list. 

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2018 January 28th, TNO 2002TC32 occults star 4UC 593-005847  (Positive, by a friend)
Path through the world and path through Europe (with observers stations) from occultwatcher software
I haven't seen this occultation because my hardware is to small, so I told a friend of mine, from Luberon Sud Astro astronomy club, to observe it
. It was his first occultation, this was for a TNO and it was positive!
A positive report was sent to planoccult mailing list. Unfortunatly, there was clouds almost everywhere in Europe. 11 stations saw positive occultation. Size and shape will follow soon...
An animated GIF make with the picture of the occultation
A map witch shows positives and négatives observations on Europe
A preliminary paper about this occultation

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2018 January 27th, (175)Andromache occults star TYC 1399-01064-1 (Negative)
path through Europe, and local circonstances,
Setup: Vintage Celestron c8, 1"1/4 .5x focal reducer, Watec 910 HX/RC video camera, Iota VTI v3 (time inserter + pps GPS), analog video capture StarTech SVID2USB23, Occurec software, Losmandy G11 Mount and MCMT32 drive.
A view of the star through the acquisition software.
Good observation, but there was no occultation => a negative report was sent to planoccult mailing list. Shape calculated by Euraster from observations of this occultation. I missed it very little!

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2017 December 23th, (239)Adrastea occults star HIP 108117 (Negative)
Path through Europe, and local circonstances.
Setup: Vintage Celestron c8, 1"1/4 .5x focal reducer, KPC-350BH video camera, Iota VTI v3 (time inserter + pps GPS), analog video capture StarTech SVID2USB23, IOTA_VideoCapture software, Losmandy G11 Mount and MCMT32 drive.
Picture of the setup. Good observation, but there was no occultation => a negative report was sent to planoccult mailing list.

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2017 January 21th, (136108) Haumea occults star Nima4 (Negative)
Prevision path map.
With somes friends I booked the TJMS telescope for the night. The weather was great, with clear sky, no wind, and temperature was -10°c. Unfortunatly, we could not see anything beacause, asteroid shadow was far Est (about central Europe).  Official report, and minute of the night. During this occultation, somes rings was discovered around the asteroid and discovery was published into Nature.

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2016 July 19, Pluton occults star (Positive)
Path through Europe
Somes friends invited me to participate at 
the TJMS telescope. Preliminary curve by JP Godard

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Some interesting links about occultations:
Iota: http://occultations.org/
Iota europe: http://www.iota-es.de/
Worlwide Asteroidal Occultation Observations and resources: http://www.asteroidoccultation.com/observations/
Euraster: http://www.euraster.net/
Planoccult mailing list: http://vps.vvs.be/mailman/listinfo/planoccult
Hristo Pavlov's web site (softwares
Occult Watcher, Occurec, Tangra 3): http://www.hristopavlov.net/


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