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TSE2024 from Cacalotan/Mexico : first results / motion in the corona

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#1 ch-viladrich

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Posted 07 May 2024 - 02:51 PM

Hi,

 

Here are some fvery irst results of the processing of the TSE images see from Cacalotan/Mexico (south of Mazatlan).

The sky was covered with cirrus of various density during totality. Still, conditions seems to have been a bit better than at Mazatlan (which was our originally planned spot).

I could make use of about 20 s of clearing for this first HDR composite. The objective at this stage was not to have a pretty picture (more work is needed for this ...), but to identify coronal structure and check for possible motions in the corona.

 

Here is the HDR composite at 50% resolution :

http://astrosurf.com...redim4000px.jpg

 

 

Stars are visible up to mag 11.

 

More interesting are the motions detected in the corona :
Here at 50 % resolution :
http://astrosurf.com...-redim-50px.gif

 

and 100% resolution :
http://astrosurf.com...-45_NR25-10.gif

 

- expansion of streamers can be seen at 11h, 9 h and 5 h directions,
- dark "voids" going downward (i.e. to the Sun) are seen at 1h and 5 h directions,
- a small expanding bubble is seen near the 9 h direction.

 

It is better to display the GIF at 50% to 100% zoom to identify these motions.

 

Stars are seen to move too. This is because of the relative motion between the Sun and the stars (images are registered to the Sun).

 

Too bad only 90 images could be actually used out of the 500 taken during totality :-(

 

The instrument was a ZWO FF 80/600 refractor with a Nikon Z7 II on an iOptron HAE29EC mount. Exposure was from 1/250 s to 1s during totality at 100 ISO.

 

More to come (but much latter ...) with a complete version including prominences.

 

Clear skies !

 

Christian


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#2 R Botero

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Posted 08 May 2024 - 02:56 AM

Great result Christian! You definitely had a clear patch. I had no images with the corona from downtown Mazatlan.

Roberto

#3 ch-viladrich

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Posted 08 May 2024 - 07:18 AM

Thanks Roberto !

 

Decision to move south of Mazatlan was a bit of a bett. And we were not sure to find a spot to set up our instruments. Too bad you could not take images at Mazatan.



#4 AstroLurker

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Posted 12 May 2024 - 05:01 PM

Excellent effort, with admirable precision, and a truly worthwhile result. I'm very glad to have seen this.



#5 ch-viladrich

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Posted 13 May 2024 - 06:37 AM

Excellent effort, with admirable precision, and a truly worthwhile result. I'm very glad to have seen this.

Thanks smile.gif

 

This is an on going work. Last results (HDR stack and animation) can bee seen here :

http://astrosurf.com...exique2024.html

 

I hope to push work one step further by the end of the week.


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#6 ch-viladrich

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Posted 25 May 2024 - 11:10 AM

Hi,

 

Here is a much improved version, including the inner corona and some proms :

 

50% resolution :

http://astrosurf.com...-v24mai2024.jpg

 

100% resolution :

http://astrosurf.com...-v24mai2024.jpg

 

Still a lot of work to be done ...


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#7 KMH

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Posted 25 May 2024 - 01:41 PM

Those are amazing results, showing really stunning details.  Thanks for sharing this on-going project!

 

Kevin



#8 ch-viladrich

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Posted 28 May 2024 - 02:49 PM

Thanks Kevin !

 

Still a long way to go ...



#9 ch-viladrich

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Posted 08 June 2024 - 02:47 PM

Hi all,

 

Here is a much improved version of the image of the eclipse.

 

In fact, there are two version ...the first with a lot of contrast to detect the maximum of structures in the solar corona :

http://astrosurf.com...l-8june2024.jpg

 

The second version has a more "usual" look :

http://astrosurf.com...l-8june2024.jpg

 

Full-resolution images and processing information are presented here :

 

http://astrosurf.com...exique2024.html
 

Clear skies !

 

Christian


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#10 R Botero

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Posted 09 June 2024 - 01:55 AM

A great improvement on an already fantastic result :bow:

 

Roberto



#11 ch-viladrich

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Posted 09 June 2024 - 03:58 AM

Thanks Roberto smile.gif





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