Eclipse 2012 Mareeba - playing with the data

[h0ughy]

this is made from 15 RAWs of various settings. tried the photoshop stack HDR. we were viewing through high cloud and i seem to have some interesting artifacts in the image. not sure how to tackle it - -maybe it cant be done?

[gregbradley]

What are the artifacts? The crimson section? Perhaps that is real??

Greg.

[strongmanmike]

Nice job Dave...a great souvenir of your trip.

Mike

[DavidTrap]

Glad to see you've got some data David - I was wondering if you'd missed totality or not.

The workshop at NACAA mentioned aligning on the corona, rather than the moon - because the moon will move relative to the corona during the eclipse period. I wonder if the shadow/blurring around the lunar edge in your image is due to that? One processing recipe I was reading last night suggested superimposing a slightly larger moon over your merged image to take care of that movement.

DT

[h0ughy]

how can you align on the corona when the shots are of differing exposures?:question:

[h0ughy]

no idea hence the question;):D

[h0ughy]

courtesy of Mr Zambelis:thanx:

[jjjnettie]

:) I'm sooooo glad you we able to salvage something Dave. It's a ripper of a shot.

[multiweb]

That looks good. I reckon you can extract the data. It's somewhere in there :) My shot needs a cloud removal tool which PS doesn't have yet.

[h0ughy]

butchered a version at lunch - not enough signal - i now have onion rings?

[DavidTrap]

I manually layered varying exposures in PS - nudged the layers about until the streams of the corona aligned.

DT

[MarkJ]

Hi David,

Great shot!

You may be able to extract even more from your data using Fitsworks and perhaps avoid the onion rings. I used Fitswork on my ten raw images to generate the "Sunflower from Palm Cove" posting in this section however I was not able to capture the earthshine and I see that you have captured it very nicely. Was there anything special you did to "extract" the earthshine?

Thanks,

Mark J

[RickS]

Houghy,

IIRC, you're a PixInsight user, aren't you? PI has a LarsonSekanina filter process that looks like it might give good results. It's the same filter that does the magic in Fitsworks. I had a play with a stack of eclipse images last night in PI and the results were promising.

Cheers,
Rick.

[h0ughy]

will look at that software and the PI try.

[nandopg]

Hi David,
Unbelievable image. The reprocessing one looks just great.

Thank you very much for posting,

Fernando

[h0ughy]

in order to not get onion rings i toned down the processing:question::shrug::help:

processed in PI - still a lot of learning going on and struggling;)

[RickS]

I hope to have time on Sunday to have a proper go at my data with PI. Will let you know if I learn any useful tricks.

[Star Catcher]

Hi David
Nicely done. From what I can see between the two images, you should be able get a reasonable compromise between the two processing ends.
Ted

[h0ughy]

The last image was using only one run of data in stepped shots. The other shot was using everything - and that’s when the differing settings create the onion rings. This bit I have tried.

What I may end up doing is a hybrid of all data and then the processed range and adding them, one with out the corona and just the moon, to the better corona shot. As the camera was modded getting a better tonal range is also difficult - to capture the "actual colour”. I consider this to be really challenging and i fear way above my ability and pay grade:rofl::help:

[h0ughy]

well this is as much as i dare play without it looking crappy:question: lots of playing and stuff.....smoke and mirrors:P:lol: even trying not to push there are signs of banding

[spacezebra]

Excellent David. I agree - pleased to see that captured! Cheers Petra d.

[johnnyt123]

How is it possible to capture any detail of he lunar surface given the sun behind directly behind it?

Light scattering off the earth possibly?

[RickS]

I had some success using FFTRegistration to register small batches of images (you can't use it for a long image series because it registers on the moon, not coronal features). The LarsonSeknina process does a fine job of pulling out coronal details. Put it together with the usual tools for sharpening, noise reduction, etc. and it looks like this is a viable approach...

Cheers,
Rick.

[firstlight]

Pretty impressive David. This is the first time image that someone has managed to capture the Earth shine that I've see of this eclipse. You should be proud.