FD H-alpha Sept 14th 2022
- Radon86
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FD H-alpha Sept 14th 2022
Hi All,
I managed to go through some more files on Sept 14th and managed to merge 6-8 panels to get a FD. Seems a lot of work to do this still.
Here is an attempt.
Quark Chromosphere
35nm H-alpha (for ERF)
ASI 174mm
Time: approx 1600 UT on 14/9/2022
Thanks,
Magnus
I managed to go through some more files on Sept 14th and managed to merge 6-8 panels to get a FD. Seems a lot of work to do this still.
Here is an attempt.
Quark Chromosphere
35nm H-alpha (for ERF)
ASI 174mm
Time: approx 1600 UT on 14/9/2022
Thanks,
Magnus
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Re: FD H-alpha Sept 14th 2022
Looking good, your not very far off from an even illuminated disc.
Rich
Lunt 60mm SS, Daystar Quark Chromosphere,
Antlia wedge,Lunt wedge
Lunt 60mm SS, Daystar Quark Chromosphere,
Antlia wedge,Lunt wedge
- Radon86
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Re: FD H-alpha Sept 14th 2022
I think when I rotated the disc, the illumination was affected. I may have a look to see if I can apply an artificial flat frame to even the disc out.cybermayberry wrote: ↑Wed Sep 28, 2022 4:45 pm Looking good, your not very far off from an even illuminated disc.
Magnus
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Re: FD H-alpha Sept 14th 2022
Hello Cybermayberry,
Yes you are right, my disc is not 100 percent even exposure. I think it is because there was change in the weather and clouds were moving in. Flat frames were hard to take as well. Oh well, maybe I will do better next time.
Please have a look at the current SPOD, EricF with his large lift off prom. Even there there is I think too much of a limb darkening. I download the .jpg file and it looked very uneven at the edge, a circumferential darkness ++/
So I agree, these Full discs are ideally done very quickly with good flat frame and stable weather/seeing conditions.
Magnus
Yes you are right, my disc is not 100 percent even exposure. I think it is because there was change in the weather and clouds were moving in. Flat frames were hard to take as well. Oh well, maybe I will do better next time.
Please have a look at the current SPOD, EricF with his large lift off prom. Even there there is I think too much of a limb darkening. I download the .jpg file and it looked very uneven at the edge, a circumferential darkness ++/
So I agree, these Full discs are ideally done very quickly with good flat frame and stable weather/seeing conditions.
Magnus
- Radon86
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Updated FD H-alpha Sept 14th 2022
Hi,
I used Microsoft ICE instead of autostitch. This seems to work better and gives a .tiff file.
I think the gradients and uneven illumination are much less now.
Thanks
Magnus
I used Microsoft ICE instead of autostitch. This seems to work better and gives a .tiff file.
I think the gradients and uneven illumination are much less now.
Thanks
Magnus
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Re: FD H-alpha Sept 14th 2022
The second version is much better, nice disk Magnus!
Warren
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Lunt LS60T DS
Orion ED80T CF
Meade ETX LS6
Lunt CaK BF1200
Lunt WL Wedge
Baader Photographic Film
ASI174MM
Skyris 236M
Player One Saturn-M SQR
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Re: FD H-alpha Sept 14th 2022
Nice disks Magnus!
http://brierleyhillsolar.blogspot.co.uk/
Solar images, a collection of all the most up to date live solar data on the web, imaging & processing tutorials - please take a look!
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Re: FD H-alpha Sept 14th 2022
Nice work, Magnus!
The ICE version is definitely more uniform albeit a bit darker.
Best regards,
Arne
The ICE version is definitely more uniform albeit a bit darker.
Best regards,
Arne
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Re: FD H-alpha Sept 14th 2022
Very nice! The ICE version did indeed come out better as far as being uniform.
Brian
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