Sun images from Melbourne 26 May 2023

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Averton
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Sun images from Melbourne 26 May 2023

Post by Averton »

The forecast was not good but there was some sun before it clouded over today. There were a few clouds drifting through during the session. It was great to see the progression of the many sunspots.


Ha full disk two panel mosaic.
2023-05-26 full disk mosaic.jpg
2023-05-26 full disk mosaic.jpg (1.26 MiB) Viewed 586 times
2023-05-26 full disk mosaic colourised.jpg
2023-05-26 full disk mosaic colourised.jpg (2.78 MiB) Viewed 586 times

Full disk two panel mosaic in 393nm.
2023-05-26 full disk mosaic 393nm.jpg
2023-05-26 full disk mosaic 393nm.jpg (2.71 MiB) Viewed 586 times
2023-05-26 full disk mosaic 393nm colourised.jpg
2023-05-26 full disk mosaic 393nm colourised.jpg (4.03 MiB) Viewed 586 times

AR3312 and AR3310 single stack Ha and 540nm.
2023-05-26 SS AR3312 AR3310 colourised.jpg
2023-05-26 SS AR3312 AR3310 colourised.jpg (2.23 MiB) Viewed 586 times
2023-05-26 AR3312 AR3310 540nm colourised.jpg
2023-05-26 AR3312 AR3310 540nm colourised.jpg (3.18 MiB) Viewed 586 times

AR3313, AR3311 and AR3314 single stack Ha and 540nm.
2023-05-26 SS AR3313 AR3311 AR3314 colourised.jpg
2023-05-26 SS AR3313 AR3311 AR3314 colourised.jpg (2.26 MiB) Viewed 586 times
2023-05-26 AR3313 AR3311 AR3314 540nm colourised.jpg
2023-05-26 AR3313 AR3311 AR3314 540nm colourised.jpg (3.11 MiB) Viewed 586 times

AR3315 single stack Ha and 540nm.
2023-05-26 SS AR3315 colourised.jpg
2023-05-26 SS AR3315 colourised.jpg (2.24 MiB) Viewed 586 times
2023-05-26 AR3315 540nm colourised.jpg
2023-05-26 AR3315 540nm colourised.jpg (3.1 MiB) Viewed 586 times


Clare & Peter
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Re: Sun images from Melbourne 26 May 2023

Post by Dennis »

Well done images and full disks. That 3310 sunspot changed its shape quite a bit over the course of time.


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Re: Sun images from Melbourne 26 May 2023

Post by pupak »

Very nice set of photos.


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Re: Sun images from Melbourne 26 May 2023

Post by Averton »

Thanks Dennis, Petr and Aaron :)


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Re: Sun images from Melbourne 26 May 2023

Post by DeepSolar64 »

Clare & Peter,
I really love your evenly illuminated and evenly tuned Ha full discs. That's always a challenge for me, especially in double stack.

James


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Re: Sun images from Melbourne 26 May 2023

Post by arnedanielsen »

Very nice Clare & Peter!

Best regards,
Arne


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Re: Sun images from Melbourne 26 May 2023

Post by marktownley »

These came out well Clare and Peter!


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Re: Sun images from Melbourne 26 May 2023

Post by Averton »

Thanks James, Arne and Mark :)

James - flats really help make our Ha images even.


Clare & Peter
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Re: Sun images from Melbourne 26 May 2023

Post by DeepSolar64 »

Averton wrote: Sun May 28, 2023 12:27 pm Thanks James, Arne and Mark :)

James - flats really help make our Ha images even.
🤔 Flats are something I need to learn to use.


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Re: Sun images from Melbourne 26 May 2023

Post by Averton »

DeepSolar64 wrote: Sun May 28, 2023 12:52 pm
Averton wrote: Sun May 28, 2023 12:27 pm Thanks James, Arne and Mark :)

James - flats really help make our Ha images even.
🤔 Flats are something I need to learn to use.
Hi James,

Flats are really easy to both make and use for Ha.
Unlike DSO flats that require an illuminated flat screen, all you need for solar is a plastic bag.
Marty has done an excellent tutorial video on capturing flats
https://www.youtube.com/watch?v=M7rSOXWQDZM
Depending on your capture software, you can use your flats while capturing your actual images (FireCapture).
In our case, we apply the flats when stacking using AS!3 which is easy to do.
We made this video for someone on CN which you might find useful.
Just right click on the video and select full screen when you play it.
https://www.cloudynights.com/gallery/im ... s-example/
As you see in the video, the dark vignetting in the lower right corner disappears when we apply the flat.
Hope this helps.


Clare & Peter
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Re: Sun images from Melbourne 26 May 2023

Post by Peterm »

Excellent images as usual Clare n Peter.


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Re: Sun images from Melbourne 26 May 2023

Post by DeepSolar64 »

Averton wrote: Mon May 29, 2023 10:58 am
DeepSolar64 wrote: Sun May 28, 2023 12:52 pm
Averton wrote: Sun May 28, 2023 12:27 pm Thanks James, Arne and Mark :)

James - flats really help make our Ha images even.
🤔 Flats are something I need to learn to use.
Hi James,

Flats are really easy to both make and use for Ha.
Unlike DSO flats that require an illuminated flat screen, all you need for solar is a plastic bag.
Marty has done an excellent tutorial video on capturing flats
https://www.youtube.com/watch?v=M7rSOXWQDZM
Depending on your capture software, you can use your flats while capturing your actual images (FireCapture).
In our case, we apply the flats when stacking using AS!3 which is easy to do.
We made this video for someone on CN which you might find useful.
Just right click on the video and select full screen when you play it.
https://www.cloudynights.com/gallery/im ... s-example/
As you see in the video, the dark vignetting in the lower right corner disappears when we apply the flat.
Hope this helps.


Thanks, Clare & Peter. I think AviStack has a setting to apply flats either in stacking or post processing. I'll have to look.


Lunt 8x32 SUNoculars
Orion 70mm Solar Telescope
Celestron AstroMaster Alt/Az Mount
Meade Coronado SolarMax II 60 DS
Meade Coronado SolarMax II 90 DS
Meade Coronado AZS Alt/Az Mount
Astro-Tech AT72EDII with Altair solar wedge
Celestron NexStar 102GT with Altair solar wedge
Losmandy AZ8 Alt/Az Mount
Sky-Watcher AZGTI Alt-Az GoTo mount
Cameras: ZWO ASI178MM, PGR Grasshopper, PGR Flea
Lunt, Coronado, TeleVue, Orion and Meade eyepieces

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Re: Sun images from Melbourne 26 May 2023

Post by Averton »

Peterm wrote: Mon May 29, 2023 11:44 am Excellent images as usual Clare n Peter.
Thanks Peter :)


Clare & Peter
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