H-Alpha time lapse

[Peter Ward]

Added some more frames and cleaned up the data a bit...

https://vimeo.com/110341935

[h0ughy]

not bad

[Peter Ward]

:question: The perennial problem I face when I do this sort of stuff...which it seems.... no one else is doing...

Is processing Tb of data with a hex-core i-7 PC on the cutting edge... or the lunatic fringe?

:lol:

P.S.
The 72,000 odd frames needed to make this time lapse were flat-fielded, yet still show:

dust motes
interference banding


I'm not sure how to fix either. :doh:

Bugger!

[multiweb]

Wow! This is unreal.

[Peter Ward]

A pleasure. Thank you! :)

[icytailmark]

thats extremely good peter your making me want to buy a solar scope. What programs did you use to process the data?

[Star Catcher]

A classy production Peter! With so many frames you certainly have excellent odds for unwanted gremlins. :)

My experiences for what they are worth:

I have found solar flats can change during even short sessions. The newton rings can shift position slightly and I suspect this is mainly from temperature shifts that alter pressure on backend optical surfaces that are either fixed or held by metal surfaces. I have also seen the rings shift when doing a median flip, but these are likely to be flexure forces.

I am not sure what capture program you are using but Fire Capture gives you some visual feedback as to whether your flat is being effective because it is applied during viewing and capture. If it is no good, redo the flat and retake the video again.

And yes I still get caught with flats that are not quite right! :)

Ted

[Nico13]

I'll go with the WOW, I think it's stunning and appreciate the work you must have put in to do it.
Thanks for showing it. :thumbsup:

[sheeny]

That's impressive.

Al.

[h0ughy]

hang on a minute - how many grabbed frames make up a final frame to go into the mix? with your capture software are you flat framing with every capture? I have found that for a long duration data mining grab the sky changes heaps and what was the initial frame is very different to the final frame in brightness and details. that's why I made sure that the sensor was a pristine with no visible moates anywhere as the flats didn't work. but then that could be me and lack of skill? lets hope that today's clear skies allows you to get the edge on with lots of loops and maybe an eruption. I caught a CME on the edge some time back and the 5 hours of time I took the whole capture the cme event was over in less than 15min. I was lucky I was taking captures every minute - roughly 600 odd frames with only the best 100 of the m used. not much to show for it in the end as I had only 300 final processed shots at a 10 frames per second rate making it a very boring 30 second clip.

[Peter Ward]

Thanks Ted....I do indeed use FireCapture, and hadn't realised it could apply a flat "on the fly". Excellent! Will give it a go :thumbsup:

[Peter Ward]

I ended up with 240 odd animation frames, but they were culled down from
240 x 300 frame avi's. Flats are applies to each (ie 72,000) frame in the avi's.

I'm running a 64 bit 3.2Ghz Hex core i-7 PC..... pre-processing took 3 days.

[h0ughy]

LOL I was running an i5 with only 8 gig - processing took an age:help::rofl:

[Derek Klepp]

Peter this is cutting edge stuff pardon the pun in terms of Solar Imaging as compared to what most of us are doing.It is beyond me in terms of computer savy and time limitations but much appreciated. Glad you have posted it on Solarchat as it adds another dimension to what we see in real time.
Cheers Derek

[alistairsam]

That's truly amazing Peter. how did you do the "panning"?

Cheers
Alistair