Occultation’s

13 years 4 months ago #45846 by Mike
Occultation’s was created by Mike
Hi

Has anyone done any work on recording Occultation’s by video means? As you are probably aware there is an occultation of Venus by the Moon in daylight on the afternoon of June 18th.
I was planning on recording this event (weather permitting of course) just as matter of experimentation and curiosity using the following methods / equipment…
Semi Professional Video camera with 20x optical zoom lens (output to PC).
Atom time Pro software (Atomic timing and video frame rate stamp)
Video frame capture software (digital recording of event, PAL 25fps), works in conjunction with Atom time pro for high accuracy timing.
Laptop PC
Sturdy Tripod

I was thinking of setting up on the grounds a well known College in Dublin, there might be some scientific value if all goes well, so if anyone is interested or can offer me advice they would be most welcome, would love to chat about life, the universe and everything.

Btw
Many thanks for the advice on video capture of the recent Lunar Eclipse. I manged to record this event digitally using similar set-up with excellent results!

Clear skies
Mike

I83 Cherryvalley Observatory

After one look at this planet any visitor from outer space would say; "I WANT TO SEE THE MANAGER".

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13 years 4 months ago #45848 by ayiomamitis
Replied by ayiomamitis on topic Re: Occultation’s
Mike,

There is something tomorrow morning as well involving the Moon and Uranus. For me, it occurs around 8:30 UT+3 and the sun is quite dominant at that time which rules out any attempt on my side.

Perhaps you have better conditions for a successful capture.

Anthony Ayiomamitis
Athens, Greece
www.perseus.gr

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13 years 4 months ago #45850 by Mike
Replied by Mike on topic Occultation's
Thanks Anthony I will look into this!

Clear Skies
Mike

I83 Cherryvalley Observatory

After one look at this planet any visitor from outer space would say; "I WANT TO SEE THE MANAGER".

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13 years 4 months ago #45954 by dmcdona
Replied by dmcdona on topic Re: Occultation’s

Mike, There is something tomorrow morning as well involving the Moon and Uranus. For me, it occurs around 8:30 UT+3


:?:

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13 years 4 months ago #45964 by eansbro
Replied by eansbro on topic Re: Occultation’s
Hi Mike,

I have done some occultation work using a video camera with STV time stamper. Origially tried analogue but have converted to digital. This would be occultations of asteroids by stars.

I am using digital with STV time stamp with a Garmin 16 GPS.

I also use a CCD camera for occultation work. For example I attempted last night to record a mutual event of Protoclus and it's moon. There were two events. First the occultation of Protoclus by its moon which took 2.5 hrs and then it's moon creating a shadow on Protoclus which ended at 02.45 am today.

The idea being to see if the predicted time is different from the real event.

A more challenging occultation are extrasolar planets. I got a successful recording of Gl 581 last week using a CCD camera. The predicted transit of 'b' didn't happen. This may mean that the inclination is much smaller.
See results in forum under Cosmology & Physics (Extrasolar Earth like planet'. It would have been very useful if the transit occurred because the mass and inclination of 'b' may have resulted in calculating 'c', the Earth like planet.

I am planning to work on future occultations of binary asteroids this year and mutual events of the Uranium satellites.

Eamonn A

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13 years 4 months ago #45966 by Mike
Replied by Mike on topic occultation Moon Venus
Hi Eamonn

Thank you for the information, I have access to a GPS system as well as the items I listed in my previous post. This attempt by me at occultation work is purely experimental; hopefully I may be able to get some very accurate results of scientific value and hopefully good images as well. An important aspect I forgot to mention was the fun factor of finding out if it all works.
I think I picked an easy target in the Moon and Venus, even in daylight this should not cause a problem (cloud will however)!
Is their an official organisation or body in Ireland where I can send my results (if any) to?
That’s very interesting work Eamonn, is this the first attempt from Ireland at imaging and analysing a transit of an extrasolar planet?

Clear skies
Mike

I83 Cherryvalley Observatory

After one look at this planet any visitor from outer space would say; "I WANT TO SEE THE MANAGER".

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13 years 4 months ago #45983 by eansbro
Replied by eansbro on topic Re: Occultation’s
Mike,

This was the first attempt of recording a possible transit of an extrasolar planet (Gl 581) in Ireland.

I plan to observe and record hopefully other predictions this year.

I don't know of an official organisation in Ireland for receiving occultations.
However, unofficially Apostolous Christou at Armagh Observatory may take your observations. Failing that the BAA would be the next official body.

Eamonn A

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13 years 4 months ago #45984 by Mike
Replied by Mike on topic occultation!
Thanks Eamonn

I had the pleasure of meeting Apostolous Christou of the Armagh Observatory on one occasion; he was very helpful indeed and offered me lots of help and advice in setting up a video meteor station.
I guess he would probably be happy to receive any results or knows of people who would. Thanks for the info!
Best of luck on imaging / analyzing any future extrasolar planet transits, a daunting task that takes meticulous planning, setting up and lots of time no doubt.

Clear skies
Mike

I83 Cherryvalley Observatory

After one look at this planet any visitor from outer space would say; "I WANT TO SEE THE MANAGER".

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13 years 4 months ago #46155 by michaeloconnell
Replied by michaeloconnell on topic Re: Occultation’s
Saw the occultation of Kappa Gemini this evening by the Moon. At that stage the dark side of the Moon wasn't visible in the scope. Winked out just like someone hit a switch! Anyone else see it?

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13 years 4 months ago #46260 by michaeloconnell
Replied by michaeloconnell on topic Re: Occultation’s
Just took a peak at the Moon. Saturn is quite visible in my 5.5" scope so even if you have a small scope it's worth trying to see Saturn while it's still daytime! The Moon will occult Saturn at almost exactly 8:00pm so that is definetly worth watching!

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13 years 4 months ago #46261 by michaeloconnell
Replied by michaeloconnell on topic Re: Occultation’s
Unfortunately, at 5 to 8, a cloud rolled across the Moon and Saturn. Will probably be gone in a few minutes - was a few minutes too late though! :evil:

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13 years 4 months ago #46266 by michaeloconnell
Replied by michaeloconnell on topic Re: Occultation’s
Saw the reappearance. Happened quite quickly! Over in a minute or so. Anyone else see it?

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13 years 4 months ago #46268 by dave_lillis
Replied by dave_lillis on topic Re: Occultation’s
Nope, its clouded out here :cry:

Dave L. on facebook , See my images in flickr
Chairman. Shannonside Astronomy Club (Limerick)

Carrying around my 20" obsession is going to kill me,
but what a way to go. :)
+ 12"LX200, MK67, Meade2045, 4"refractor

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13 years 4 months ago #46273 by dmcdona
Replied by dmcdona on topic Re: Occultation’s
I was aligning the mount and used saturn - but it was about 9.30pm so I missed the exit. Conjunction was nice sight in the finderscope though.

We're getting some high cloud in now.

Dave

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13 years 4 months ago #46275 by paulevans
Replied by paulevans on topic Re: Occultation’s
Hi Guys,

I missed the ingress due to cloud but was right there for the egress - webcammed up I hit record at 2105 BST and got a 5 min capture which was perfect. Here's a 1 min clip of the movie which is speeded up 2x so covers 2 mins of real time. A bit compressed but not bad nevertheless!


www.pevans.me.uk/images/satocc0705222.wmv

Enjoy!

Paul.

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13 years 4 months ago #46277 by dmcdona
Replied by dmcdona on topic Re: Occultation’s
Nice one Paul - love those real-time movies. Thanks for sharing.

Dave

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13 years 4 months ago #46279 by michael_murphy
Replied by michael_murphy on topic Re: Occultation’s
Great movie Paul.

I watched it from Glencullen in South dublin with a few others.

We were luck as the cloud cleared at ingress and egress :D

Michael.

IFAS Secretary.

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13 years 4 months ago #46280 by dmcdona
Replied by dmcdona on topic Re: Occultation’s

Great movie Paul.

I watched it from Glencullen in South dublin with a few others.


The movie? :shock:

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13 years 4 months ago #46282 by michael_murphy
Replied by michael_murphy on topic Re: Occultation’s

Great movie Paul.

I watched it from Glencullen in South dublin with a few others.


The movie? :shock:


I wish, my wireless range extender isn't THAT good :) .

Just the event with the ol' mk1 eyeball.

IFAS Secretary.

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13 years 4 months ago #46283 by dmcdona
Replied by dmcdona on topic Re: Occultation’s
:D

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13 years 4 months ago #46300 by Frank Ryan
Replied by Frank Ryan on topic Re: Occultation’s
Class video Paul.
Have you tried your hand at getting an image of it
with registax?

My Astrophotography
Shannonside Astronomy Club __________________________________________
Meade ETX-125PE, Bresser 10 x 50 Binos & Me Peepers

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13 years 4 months ago #46303 by dave_lillis
Replied by dave_lillis on topic Re: Occultation’s
Thanks for putting this up Paul.
It goes some way to cheering me up after missing it.

Dave L. on facebook , See my images in flickr
Chairman. Shannonside Astronomy Club (Limerick)

Carrying around my 20" obsession is going to kill me,
but what a way to go. :)
+ 12"LX200, MK67, Meade2045, 4"refractor

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13 years 4 months ago #46308 by paulevans
Replied by paulevans on topic Re: Occultation’s
Thanks guys,

There's a couple of still frames taken from the avi on my blog

paulni.blogspot.com

I took a couple of shorter clips to put through Registax which I'll play with when I have some time - or take a shorter clip of the big capture.

Clear skies,

Paul.

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13 years 4 months ago #46313 by Mike
Replied by Mike on topic Occultation!
That’s really good work Paul, well done!
Are you planning on video recording the June 18th occultation of the Moon and Venus?

Clear skies
Mike

I83 Cherryvalley Observatory

After one look at this planet any visitor from outer space would say; "I WANT TO SEE THE MANAGER".

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13 years 4 months ago #46315 by Matthew C
Replied by Matthew C on topic Re: Occultation’s
Paul that site of yours is briliant! I really enjoyed reading the blurbs along with the great shots! Are you into birdwatching?

We shall not cease from exploration
And the end of all our exploring
Will be to arrive where we started
And know the place for the first time. . . .
T. S. Eliot
A wise man....

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