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Old 11-08-2019, 08:10 AM
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doppler (Rick)
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Lunar Occultation of Saturn, 2019 August 12

Just a heads up for this event tomorrow evening, it starts early during twilight. Here's the details.
http://www.occultations.org.nz/total...n2019Aug12.htm


Rick


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Old 11-08-2019, 11:22 AM
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The_bluester (Paul)
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I bet it is cloudy tomorrow night, but for me near Melbourne it is a near miss! I might still set up anyway if the sky looks promising.
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Old 11-08-2019, 11:31 AM
Saturnine (Jeff)
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Am looking forward to tomorrows occultation, the weather forecast for here is pretty good, winds abating, calming jetstream and supposedly clear skies for the evening.
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Old 11-08-2019, 01:17 PM
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Tinderboxsky (Steve)
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It is a near miss here in southern Tasmania too, but always an interesting observation. Iíll have the scope out if the heavy cloud clears.
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Old 11-08-2019, 05:28 PM
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bigjoe (Joe)
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Hope this helps some .
https://earthsky.org/astronomy-essen...universal-time.

As you can see if your in Eastern states non DSav now , ADD 10HRS to UTC... the Saturn Occultation will be not long after sunset here in Sydney..
And dont forget the Persieds meteor shower maxing on 14th August.

Bigjoe

Last edited by bigjoe; 11-08-2019 at 05:31 PM. Reason: Adding word
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Old 12-08-2019, 11:27 AM
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multiweb (Marc)
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Setting up tonight if it's clear in Sydney west. Trying to a long FL shot of it with the CN-212 and a ZWO-120MM. I did a widefield of the last one in 2014 but want to get up close this time.



Anyone had advice using sharpcap on this? I'm thinking saving SER 16bit files then make master frames from them then using the resulting frames in a small animation / timelapse.

Or am I better off just shooting a continuous video?
Also when using SER I noticed a 8bit or 16bit option. Defaults to 8bit. Worth going to 16bit? There is a significant difference in luminosity between the moon limb and Saturn so the more dynamic range the better?
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Old 12-08-2019, 12:14 PM
Saturnine (Jeff)
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Will be shooting a continuous video of the disappearance and reappearance , should be about 1 minute each using an ZWO290mc. Then later extract individual frames to maybe make a gif as well as some single frames.
Correct me if my calcs are way off but from 1st contact to disappearance should take about 45 seconds and similar for 3rd contact to full reappearance.
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Old 12-08-2019, 12:18 PM
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multiweb (Marc)
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Quote:
Originally Posted by Saturnine View Post
Will be shooting a continuous video of the disappearance and reappearance , should be about 1 minute each using an ZWO290mc. Then later extract individual frames to maybe make a gif as well as some single frames.
Correct me if my calcs are way off but from 1st contact to disappearance should take about 45 seconds and similar for 3rd contact to full reappearance.
Oh wow! You're right. Just checked again. Not much time for single frames.
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Old 12-08-2019, 12:41 PM
Saturnine (Jeff)
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Just did a simulation with Stellarium and the times seem to be twice as long from 1st contact to disappearance and similar for reappearance, about 1'30". Could add up to a few more frames than I first thought but it's not an every day event. Weather is looking favourable with a calm jetstream too.
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Old 12-08-2019, 01:04 PM
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I'll miss the first part. My Eastern horizon is hidden by the house. But I'll have plenty of time to see the reappearance. Is it better to use an IR filter?
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Old 12-08-2019, 01:18 PM
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Quote:
Originally Posted by multiweb View Post
Setting up tonight if it's clear in Sydney west. Trying to a long FL shot of it with the CN-212 and a ZWO-120MM. I did a widefield of the last one in 2014 but want to get up close this time.


Wow Marc Ė the link to the Vimeo animation blew my mind. That is the BEST Moon/Saturn animation I have ever seen, by far. The detail and clarity of the Moon along with a correctly exposed Saturn was superb. The detailed inset frames for the ingress and egress really put the icing on the cake.

Iím not sure than anything can top that, so I may just kick back, relax and observe it with my eyes, if I can find an eyepiece that is.

Clear skies and good luck for tonight.

Cheers

Dennis
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Old 12-08-2019, 02:05 PM
seriousfun (Allan)
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Its been raning solidly here since friday so not much chance for me. dissapointed.
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Old 12-08-2019, 04:17 PM
Saturnine (Jeff)
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That's the sky crying for the All Blacks.
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Old 12-08-2019, 05:33 PM
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How good was that!

I set up the Mewlon 210 with ASI224MC and the Moon/Saturn just cleared the trees and I managed to grab a few AVI's.

Seeing the rings "disappear" as they passed behind the lunar limb, with the very bright illuminated portion of the Moon slowly creeping across the frame, was quite lovely.

Now to start the planning for the egress.

Cheers

Dennis
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Old 12-08-2019, 05:41 PM
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All clear here in Mackay for a change. Here's a couple of pics. It was surprising how quick it disappeared, it was only a couple of minutes.
Rick
Attached Thumbnails
Click for full-size image (moon saturn.jpg)
179.2 KB45 views
Click for full-size image (saturn crop.jpg)
195.0 KB39 views
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Old 12-08-2019, 05:42 PM
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multiweb (Marc)
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Just happened a few minutes ago. Managed to get videos. Waiting after 7:00 now for it to come back. Looked pretty cool.
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Old 12-08-2019, 05:47 PM
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multiweb (Marc)
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All clear here in Mackay for a change. Here's a couple of pics.
Rick
Looks great!
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Old 12-08-2019, 05:49 PM
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multiweb (Marc)
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Quote:
Originally Posted by Dennis View Post
How good was that!

I set up the Mewlon 210 with ASI224MC and the Moon/Saturn just cleared the trees and I managed to grab a few AVI's.

Seeing the rings "disappear" as they passed behind the lunar limb, with the very bright illuminated portion of the Moon slowly creeping across the frame, was quite lovely.

Now to start the planning for the egress.

Cheers

Dennis
That's awesome! Looking forward to that.
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  #19  
Old 12-08-2019, 05:53 PM
Dennis
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Quote:
Originally Posted by doppler View Post
All clear here in Mackay for a change. Here's a couple of pics. It was surprising how quick it disappeared, it was only a couple of minutes.
Rick
Those are great shots Rick, I really like how you have managed to contain the extremes of brightness so well.

Cheers

Dennis
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  #20  
Old 12-08-2019, 05:56 PM
Dennis
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Quote:
Originally Posted by multiweb View Post
Just happened a few minutes ago. Managed to get videos. Waiting after 7:00 now for it to come back. Looked pretty cool.
Hi Marc

Thanks for alerting me to this event (via e-mail), I would have missed it otherwise.

I captured an AVI of the Moon's limb just after Saturn disappeared, with exposure set for the Moon so I hope I can make a composite later.

Cheers

Dennis
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