transit of the ISS in front of the sun in halpha on 13 June

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stef41
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transit of the ISS in front of the sun in halpha on 13 June

Post by stef41 »

good evening to all,

last week, I look by curiosity the site "transit finder" and I discover that the ISS passes in front of the sun on June 13 at 10:05 UT visible .... from my home ! :D

So, big blue sky, no need to move, I made the effort to try it! :)

at the fs60 with its sm40 double stack, BF10, glasspath x1.7 and zwo178mm

camera setting :
FPS (avg.)=41
Shutter=2.125ms
Gain=100
Gamma=40

film (slow motion x4) of transit reduced to 50%.
S20210613-ISS-10h05UT-sm40DS-fs60-bf10-gpx1.7-asi178mm-r50.gif
S20210613-ISS-10h05UT-sm40DS-fs60-bf10-gpx1.7-asi178mm-r50.gif (5.85 MiB) Viewed 331 times
two things are noticeable: the "transit train" is not regular and the ISS even makes a retrograde movement .... which (unless Thomas wanted to turn around to take my picture ;) ) is not quite normal.

I suspect that the rolling shutter of my camera is responsible for this.

Well, I did get an image from the film anyway :)
S20210613-ISS-10h05UT-sm40DS-fs60-bf10-gpx1.7-asi178mm.jpg
S20210613-ISS-10h05UT-sm40DS-fs60-bf10-gpx1.7-asi178mm.jpg (1.14 MiB) Viewed 331 times
Sincerely
stéphane


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Re: transit of the ISS in front of the sun in halpha on 13 June

Post by H-Alpha »

Excellent capture of the ISS Stephane!

How did you manage to get a so small in size gif out of the original capture? What was your process? Did you select/extract specific frames from the video one by one and then made the gif out of them?

And how did you make the photo? Just stacking the video capture gives back all the ISS positions on the sun?

Best wishes,
Alexandros


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Re: transit of the ISS in front of the sun in halpha on 13 June

Post by Montana »

Absolutely fantastic!!! every transit of the ISS I consider a miracle :bow :bow :hamster:

Alexandra


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Re: transit of the ISS in front of the sun in halpha on 13 June

Post by banjo »

bravo !!!! Steph
superbe.gif
superbe.gif (23.39 KiB) Viewed 308 times


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https://astropol.pagesperso-orange.fr/b ... 9/best2019
sorry for my English translators google :mrgreen:
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Re: transit of the ISS in front of the sun in halpha on 13 June

Post by stef41 »

thanks to you :)
H-Alpha wrote: Tue Jun 15, 2021 8:45 pm How did you manage to get a so small in size gif out of the original capture? What was your process? Did you select/extract specific frames from the video one by one and then made the gif out of them?
I opened my original ser (2000 frames) in registax.
selected just the frames containing the ISS and extracted it as an AVI
I opened the AVI in virtualdub, resized it to 50%, cropped it and set it to 10fps ; and, finally, exported it as a GIF
and also save as XVID, even smaller than GIF ;) (1.3Mo)

http://www.astrosurf.com/ls35dx/new53/S ... mm-r50.avi
H-Alpha wrote: Tue Jun 15, 2021 8:45 pm And how did you make the photo? Just stacking the video capture gives back all the ISS positions on the sun?
I processed my 2000 frames film normally, it gave me my image of the sun.
Then I extracted the frames from the previous AVI with PIPP and put these frames on my previous image with layers in "darken" mode (see tuto: https://www.thelondonastronomer.com/it- ... ce-station )

Sincerely
stéphane


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Re: transit of the ISS in front of the sun in halpha on 13 June

Post by RodAstro »

Very Nice Stephane
Maybe they just put the brakes on to let people get a picture :D

Rod


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Re: transit of the ISS in front of the sun in halpha on 13 June

Post by H-Alpha »

Thank you very very much Stephane! Merci enormement!!! :-)
This helps a lot.
Now I will be ready for the next passage of ISS above my head. ;-)
Best wishes,
Alexandros


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Re: transit of the ISS in front of the sun in halpha on 13 June

Post by MAURITS »

Nice to see Stéphane and congrats on SPOD.


Regards,
Maurits

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