Animation from 2022_06_18

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Bruce G
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Animation from 2022_06_18

Post by Bruce G »

Sorry I've been absent for so long folks. Things have gotten kind of busy around here

On the 18th of June I had some decent seeing and was able to produce a set of images taken at approximately 15 minute intervals over 2 1/4 hours. I hadn't noticed the extent of the activity until I started processing the images. The images are all individual frames from the .ser file, not stacks. In some places, the filament moved so quickly that a stack could not have captured it. Alas, I was having camera issues and turned off my time stamp in the process of straightening things out, then I forgot to turn it back on again, and the acquisition was controlled by seeing conditions so the time interval between images is not consistent.

Lunt LS80 single stack
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I have included the guider in my equipment list because it has made my image acquisition about 100x easier. No more fussing with alignment! No more babysitting the exposures! Forget the cost. It makes making solar images worthwhile again.

Another equipment note. The Baader VIP barlow at 2x gives me no Newton's rings at all. My TeleVue 2.5x Powermate gives me strong rings. Just an observation at this point.

2022_06_18-Filament-color1.gif
2022_06_18-Filament-color1.gif (6.32 MiB) Viewed 441 times
Last edited by Bruce G on Fri Jul 01, 2022 3:51 pm, edited 3 times in total.


Bruce G
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Re: Animation from 2022_06_18

Post by Bruce G »

This portion here is from a single 15 minute segment of the capture
That thing is moving. Looks like about 150,000 kph.
Filament1.gif
Filament1.gif (1.99 MiB) Viewed 440 times


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Re: Animation from 2022_06_18

Post by marktownley »

These look great to me Bruce! Ditch the 2.5x PM and use the Baader instead ;)


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Re: Animation from 2022_06_18

Post by rigel123 »

Great animation to show the movement in that filament!


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Re: Animation from 2022_06_18

Post by Montana »

Wow!! fabulous animation :movie

Alexandra


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Re: Animation from 2022_06_18

Post by Bruce G »

Thanks all

It's clear that, at least in this case, 15 minutes is too long for individual frames in an animation. What sort of interval is commonly used? Recorded as a series of individual files or as a big file that is split up afterward? I find the animations fascinating, but a lot of work. Balancing the light between frames seems to be one of the bigger issues for me. Any suggestions? Much appreciated

Bruce G


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Re: Animation from 2022_06_18

Post by rigel123 »

Bruce G wrote: Sun Jul 03, 2022 12:39 pm Thanks all

It's clear that, at least in this case, 15 minutes is too long for individual frames in an animation. What sort of interval is commonly used? Recorded as a series of individual files or as a big file that is split up afterward? I find the animations fascinating, but a lot of work. Balancing the light between frames seems to be one of the bigger issues for me. Any suggestions? Much appreciated

Bruce G
Typically you will see people catching frames anywhere from every 15 seconds to every minute. I typically capture 500 frames every 30 seconds, but then for an animation of your length that would be a lot of files to work with! In this case every 15 minutes worked because the filament was not extremely active. But I have seen events that only last 5 minutes that are very dramatic so you could miss the whole thing! Balancing the light can be a real issue particularly if there are high clouds that constantly change the histogram. I found a way to somewhat balance the frames with Pixinsight and the Batch Linear Fit Script and I did a quick tutorial here.

https://youtu.be/IKZmipr0mYs


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Re: Animation from 2022_06_18

Post by Bruce G »

Thanks Rigel

Histogram matching is certainly the way to go. I'll have to spend some time going through your method.
Much appreciated

Bruce G


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Re: Animation from 2022_06_18

Post by eroel »

Bruce:
Super animation.
Thanks.
Eric.


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Re: Animation from 2022_06_18

Post by Carbon60 »

Really nice, Bruce. Animations are so interesting and this one is no exception.

Stu.


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Re: Animation from 2022_06_18

Post by LeoD »

Very good animation, Bruce!
Seems I need to look for Hinode somewhere on the shelves and get to grips to work with Pixinsight. Thanks for the tutorial, Warren!
Leo


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