Sun full disk 20220616 (30 panel mosaic)

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Sergio Alessandrelli
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Sun full disk 20220616 (30 panel mosaic)

Post by Sergio Alessandrelli »

Hi to all

Another full disk from June. 30 panels and a bit of work and time to process the mosaic ;)

Full resolution and data on:

https://www.astrobin.com/v59aib/
https://www.astrobin.com/06whm8/
https://www.astrobin.com/3cr3q4/
https://www.astrobin.com/fk9oso/

Bye
Attachments
[Group-1]-2022-06-16_T_11-03-24-0668_L_lapl5_ap8395_20220801172251_2022-06-16_T_11-22-18-0103_L_lapl5_ap11692_20220801172257-31-images_0000_Radius64_Limit3_5_Amount0_400_INV_AP_CL_RID.jpg
[Group-1]-2022-06-16_T_11-03-24-0668_L_lapl5_ap8395_20220801172251_2022-06-16_T_11-22-18-0103_L_lapl5_ap11692_20220801172257-31-images_0000_Radius64_Limit3_5_Amount0_400_INV_AP_CL_RID.jpg (4.79 MiB) Viewed 373 times
[Group-1]-2022-06-16_T_11-03-24-0668_L_lapl5_ap8395_20220801172251_2022-06-16_T_11-22-18-0103_L_lapl5_ap11692_20220801172257-31-images_0000_Radius64_Limit3_5_Amount0_400_CL_RID.jpg
[Group-1]-2022-06-16_T_11-03-24-0668_L_lapl5_ap8395_20220801172251_2022-06-16_T_11-22-18-0103_L_lapl5_ap11692_20220801172257-31-images_0000_Radius64_Limit3_5_Amount0_400_CL_RID.jpg (4.54 MiB) Viewed 373 times


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Re: Sun full disk 20220616 (30 panel mosaic)

Post by marktownley »

That's a nice disk Sergio!


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Re: Sun full disk 20220616 (30 panel mosaic)

Post by pedro »

Nice FD image Sergio. I prefer the second image (chromosphere not inverted)


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Re: Sun full disk 20220616 (30 panel mosaic)

Post by MAURITS »

Nice to see Sergio.


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Re: Sun full disk 20220616 (30 panel mosaic)

Post by pupak »

:bow Excelent work.


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Re: Sun full disk 20220616 (30 panel mosaic)

Post by Radon86 »

Hi,
Was this a solar spectrum filter or Lunt 150 solar scope.
Very detailed disc, and sharp.


Thanks

Magnus


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Re: Sun full disk 20220616 (30 panel mosaic)

Post by Sergio Alessandrelli »

I used a William Optics flt 132 and a SolarSpectrum SO1 filter


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Re: Sun full disk 20220616 (30 panel mosaic)

Post by allhoest »

To make a 30 pieces mosaic, you must have pretty consistent etalon, pretty stable conditions and properly planning your individual captures in order to have no join issue.
Great job.
Alex


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Re: Sun full disk 20220616 (30 panel mosaic)

Post by SassySun »

Beautiful mosaic Sergio!


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Re: Sun full disk 20220616 (30 panel mosaic)

Post by Sergio Alessandrelli »

allhoest wrote: Sat Aug 13, 2022 6:05 pm To make a 30 pieces mosaic, you must have pretty consistent etalon, pretty stable conditions and properly planning your individual captures in order to have no join issue.
Great job.
Alex
The SolarSpectrum etalon I have use a TEC stabilization but require flats because it's not so uniform. I cure the orientation of the camera to have the camera sensor parallel to the mount axes. Seeing is never so good but I make 2000 frame video for every frame and then I stak the best 10-15% of each.
Than i need to be luky, it's not easy to have an authomatic allignment of all the frames, sometimes I have to manually adjust the position, sometimes I have to use only some frames.


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Re: Sun full disk 20220616 (30 panel mosaic)

Post by arnedanielsen »

Good results Sergio!

Best regards,
Arne


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Re: Sun full disk 20220616 (30 panel mosaic)

Post by Carbon60 »

Nice results, Sergio. That's a lot of work!

Stu.


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Re: Sun full disk 20220616 (30 panel mosaic)

Post by Montana »

Wow!! 30 panels!! well done!! :bow :hamster: I think someone in the Solar Software section asked the question whether you can automate the image capture as they keep getting lost, how do you manage to keep on track doing 30?

Alexandra


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Re: Sun full disk 20220616 (30 panel mosaic)

Post by Sergio Alessandrelli »

Montana wrote: Sun Aug 14, 2022 11:50 am Wow!! 30 panels!! well done!! :bow :hamster: I think someone in the Solar Software section asked the question whether you can automate the image capture as they keep getting lost, how do you manage to keep on track doing 30?

Alexandra
Thank you ;)

I don't use a specif software to automize the mosaic creation. Telescope mount is oriented toward the North: during the night I make a polar allignment of the telescope mount, marking on the floor the position of the tripod and than I unmount the telescope mount without changing anithing, just loosing the screew as needed to remove the head from the tripod. It maintain a good polar allignment for the day session and than I use the Hinode solar guide to track the sun.
Than after every video I manually move the mount to overlap each area for about 1/8 - 1/10 of the frame. For the mosaic creation I use AutoPano Pro 4.4 for Mac but it's no more maintained... It has a lot of option to change the exposition, the correction of distortion/vignettature and so on, but sometimes it can't find a correct set of allignment point to create the mosaic. If just one or two frames aren't recognized, I move manually the frames, otherwise I try to create sub mosaic and when possible merge them.

It's a bit of work but resolution is very high and I printed large posters with these mosaics ;)

Here my setup with the typical "spaghetti cabling" :lol:
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