Drawing from Iota
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 |
2022 August 29th, (725) Amanda occulte UCAC4 TYC 6921-01662-1 (Positive)
OW cloud link, local circonstances,
Setup: Meade 12 inch SCT @ f/5.5 (Celestron f/6.3
reducer). Atik One CCD Camera (IMX694) bin 2 with Astronomik Clear filter, Modified
Valmeca VMA 200 Mount and MCMT32
drive.
30s
exposure without telescope drive in order to have star track (dift scan
method). The computer clock was set before and after with Meinberg NTP Server. Recorded computeur time.
Positive observation. The positive report
was sent to planoccult mailing list
Picture of the drif scan.
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2022 July 25th, (6984) Lewiscarroll occulte UCAC4 453-105701 (Positive)
OW cloud link, local circonstances,
Setup: Meade 12 inch SCT @ f/5.5 (Celestron f/6.3
reducer). Atik One CCD Camera (IMX694) bin 2 with Astronomik Clear filter, Modified
Valmeca VMA 200 Mount and MCMT32
drive.
30s
exposure without telescope drive in order to have star track (dift scan
method). The computer clock was set before and after with time.is website
Positive observation. The positive report
was sent to planoccult mailing list
Picture of the drif scan.
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2022 June 29th, (59676) 1999 JE101 occulte UCAC4 415-086445 (Negative)
OW cloud link,
Setup: Meade 12 inch SCT @ f/5.5 (Celestron f/6.3
reducer). Atik One CCD Camera (IMX694) bin 2 without filter, Modified
Valmeca VMA 200 Mount and MCMT32
drive.
30s exposure without telescope drive in order to have star track (dift scan method).
Negative observation. The negtive report
was sent to planoccult mailing list
Picture of the drif scan.
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2022 June 25th, (55748) 1990 VV11 occulte UCAC4 344-194514 (Negative)
OW cloud link,
Setup: Meade 12 inch SCT @ f/5.5 (Celestron f/6.3
reducer). Atik One CCD Camera (IMX694) bin 2 without filter, Modified
Valmeca VMA 200 Mount and MCMT32
drive.
30s exposure without telescope drive in order to have star track (dift scan method).
Negative observation. The negtive report
was sent to planoccult mailing list
Picture of the drif scan.
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2022 June 18th, (2699)Kalinin occults UCAC4 302-097967 (Negative)
OW cloud link,
Setup: Meade 12 inch SCT @ f/5.5 (Celestron f/6.3
reducer). Atik One CCD Camera (IMX694) bin 2 without filter, Modified
Valmeca VMA 200 Mount and MCMT32
drive.
30s exposure without telescope drive in order to have star track (dift scan method).
Negative observation. The negtive report
was sent to planoccult mailing list
Picture of the drif scan.
2020 April 09th, (78752)2002 TJ 287 occults UCAC4 544-041834 (Negative)
Path through France, local circonstances,
Setup: Meade 12 inch SCT, 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 Valmeca VMA 200 Mount and MCMT32
drive.
Negative observation. The negtive report
was sent to planoccult mailing list.
2019 October 29th, (87)Sylvia occults TYC 1932-00469-1 (Positive but only for Remus moon)
Path through Europe, Local circonstances, path for main body, path for Romulus moon, path for Remus moon,
Setup: Meade 12 inch SCT, 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 Valmeca VMA 200 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 and the cords with Damit 3D model.
2019 January 10th, (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 10th, (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 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)------------------------------------------------------------------------------------------------------------------------------------------------------------------
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
An article in Astronomy & Astrophysic where I'm co-autor about this occultation.
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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/
