August 16 2018 AR12718 3 bands 280mm scope.
- Valery
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August 16 2018 AR12718 3 bands 280mm scope.
Hello to all,
Morning of the August 16 was calm and sunny - a good chance to image a new tiny AR12718 in CaK, UV 393nm and in H-a. My trusty C11 scope was equipped with the ARIES full size (295mm) DERF energy rejection filter and three narrow band filters - CaK (393nm, 2,2A FWHM), 393nm bandpass ( 20nm) filter and H-a 656nm (0,2A FWHM). Basler 1920-155 camera.
Seeing was OK.
Thanks for looking and comments.
Valery
Morning of the August 16 was calm and sunny - a good chance to image a new tiny AR12718 in CaK, UV 393nm and in H-a. My trusty C11 scope was equipped with the ARIES full size (295mm) DERF energy rejection filter and three narrow band filters - CaK (393nm, 2,2A FWHM), 393nm bandpass ( 20nm) filter and H-a 656nm (0,2A FWHM). Basler 1920-155 camera.
Seeing was OK.
Thanks for looking and comments.
Valery
- Attachments
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- AR12718-2018-08-16-UT05h-46m-280mm-ARIES-DERF-PST-CaK-Basler-1920.jpg (488.33 KiB) Viewed 3053 times
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- AR12718-2018-08-16-UT06h-04m-280mm-ARIES-DERF-393nm-Basler-1920.jpg (497.6 KiB) Viewed 3053 times
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- AR12718-2018-08-16-UT06h-22m-280mm-ARIES-DERF-656nm-Basler-1920.jpg (494 KiB) Viewed 3053 times
Last edited by Valery on Wed Aug 22, 2018 7:53 am, edited 2 times in total.
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Re: August 16 2018 AR12718 3 bands 280mm scope.
Valery,
you are usually producing quality images, but these are exceptional. Seeing was ok maybe is an understatement?
The glow in the CAK is great, granulation: can it be done better and that 0.2A H-Alfa, where did you find that filter ...
Regards,
Paul
you are usually producing quality images, but these are exceptional. Seeing was ok maybe is an understatement?
The glow in the CAK is great, granulation: can it be done better and that 0.2A H-Alfa, where did you find that filter ...
Regards,
Paul
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Re: August 16 2018 AR12718 3 bands 280mm scope.
Awesome resolution, seeing must have been killer!
Very best,
Very best,
Re: August 16 2018 AR12718 3 bands 280mm scope.
Hi Valery,
great pictures! The CaK in particular is terrific - I haven't seen any CaK image taken with amateur equipment that comes closer to the DOT images in terms of detail and resolution!
Would you tell us what exposure time you used and how many frames you stacked?
Regards,
Frank
great pictures! The CaK in particular is terrific - I haven't seen any CaK image taken with amateur equipment that comes closer to the DOT images in terms of detail and resolution!
Would you tell us what exposure time you used and how many frames you stacked?
Regards,
Frank
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Re: August 16 2018 AR12718 3 bands 280mm scope.
Very good! I'm glad you got round to posting them.
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Re: August 16 2018 AR12718 3 bands 280mm scope.
Great images Valery
Pedro Re'
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Re: August 16 2018 AR12718 3 bands 280mm scope.
Wow, the K image is really impressive, great resolution indeed.
Raf
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Re: August 16 2018 AR12718 3 bands 280mm scope.
Goodness grief!!! unbelievable CaK, are you sure you aren't at one of the major solar observatories Valery
Alexandra
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Re: August 16 2018 AR12718 3 bands 280mm scope.
Hi Frank,LTHB wrote: ↑Sat Aug 18, 2018 9:27 pm Hi Valery,
great pictures! The CaK in particular is terrific - I haven't seen any CaK image taken with amateur equipment that comes closer to the DOT images in terms of detail and resolution!
Would you tell us what exposure time you used and how many frames you stacked?
Regards,
Frank
Thanks for looking at these images.
Exposure time was 6ms and 1500 stacked images.
Valery
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Re: August 16 2018 AR12718 3 bands 280mm scope.
Valery:
The 2 first shots are superbly recorded and processed.
Best regards,
Eric.
The 2 first shots are superbly recorded and processed.
Best regards,
Eric.
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Re: August 16 2018 AR12718 3 bands 280mm scope.
Thanks, Eric
Can't understand whats wrong with the H-a image???
Valery
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Re: August 16 2018 AR12718 3 bands 280mm scope.
Valery:
Nothing wrong, the 3 images are stupendous, but as a personal taste I like the first 2 much more, for me the Ha is a bit oversharpened compared to the other two.
Best regards,
Eric.
Nothing wrong, the 3 images are stupendous, but as a personal taste I like the first 2 much more, for me the Ha is a bit oversharpened compared to the other two.
Best regards,
Eric.
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Re: August 16 2018 AR12718 3 bands 280mm scope.
Understand now. But I believe the image is not oversharpened - no noise (sand or dotty) and if I use a bit less of deconvolution, I start to loss the tiniest details which H-a image is full of. Not so with continuum image and in CaK core.
Have changed the H-a image for less sharpened one.
Valery
Last edited by Valery on Wed Aug 22, 2018 7:54 am, edited 1 time in total.
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Re: August 16 2018 AR12718 3 bands 280mm scope.
Exceptional images,Valery. Lots of wonderful details in all of them.
Stu.
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Re: August 16 2018 AR12718 3 bands 280mm scope.
Second one is really unusual. Very interesting result. All have great resolution. Thanks
Robert
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Re: August 16 2018 AR12718 3 bands 280mm scope.
Thanks, Stu
Note that the seeing was just OK, nothing special. May be a bit better when I recorded the CaK.
With Solar Scintillation Monotor such results should be achieveable in average climates. Especially if an aperture is smaller.
Valery
Last edited by Valery on Thu Aug 23, 2018 3:15 am, edited 1 time in total.
"Solar H alpha activity is the most dynamic and compelling thing you can see in a telescope, so spend accordingly." (c) Bob Yoesle.
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Re: August 16 2018 AR12718 3 bands 280mm scope.
Hi Valery...
These images are all very impressive...well done
Brian
These images are all very impressive...well done
Brian
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Maple Ridge Observatory
Cambray, ON Canada
Photos: https://www.flickr.com/photos/185395281@N08/albums
10'x15 Roll-off Roof Observatory
Takahashi EM400 Mount carrying:
C14 + Lunt 80ED
Deep Sky Work - ASI294MM Pro+EFW 7x36/Canon 60D (Ha mod), ONAG
Planetary Work - SBIG CFW10, ASI462MM
2.2m Diameter Dome
iOptron CEM70G Mount carrying:
Orion EON 130ED, f7 OTA for Day & Night Use
Ha Setup: Lunt LS80PT/LS75FHa/B1200Ha + Home Brew Lunt Double Stack/B1800Ha on the Orion OTA + Daystar Quantum
WL, G-Band & CaK Setup: Lunt Wedge & Lunt B1800CaK, Baader K-Line and Altair 2nm G-Band filter
ASI1600MM, ASI432MM, ASI294MM Pro, ASI174MM, ASI462MM
Re: August 16 2018 AR12718 3 bands 280mm scope.
Hi Valery,
thanks (somewhat belatedly - I was very busy last week) for the info!
I am also shooting CaK at 6ms (or a little less) exposure time, but I mostly stack around 200 frames. I've never used a stack of more than 1000 frames, but I recall that Emil Kraaikamp says somewhere on his website, that he prefers to stack many pictures and, as he puts it, push the stack a bit harder.
So this is something to explore for me: Vary the stack size. I'll probably try this in both directions to see what works best: More than 1000 frames, as in your terrific image, but I'll also try much smaller stacks, as Christian recommends - if I can find a way to get less noisy videos, maybe with a different camera.
Thanks again and regards,
Frank
thanks (somewhat belatedly - I was very busy last week) for the info!
I am also shooting CaK at 6ms (or a little less) exposure time, but I mostly stack around 200 frames. I've never used a stack of more than 1000 frames, but I recall that Emil Kraaikamp says somewhere on his website, that he prefers to stack many pictures and, as he puts it, push the stack a bit harder.
So this is something to explore for me: Vary the stack size. I'll probably try this in both directions to see what works best: More than 1000 frames, as in your terrific image, but I'll also try much smaller stacks, as Christian recommends - if I can find a way to get less noisy videos, maybe with a different camera.
Thanks again and regards,
Frank
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Re: August 16 2018 AR12718 3 bands 280mm scope.
Frank,LTHB wrote: ↑Sun Aug 26, 2018 2:07 pm
So this is something to explore for me: Vary the stack size. I'll probably try this in both directions to see what works best: More than 1000 frames, as in your terrific image, but I'll also try much smaller stacks, as Christian recommends - if I can find a way to get less noisy videos, maybe with a different camera.
The CaK image in this thread is far far not the best in resolution and details among all I have obtained during last year. I still hope to overcome my laziness and finally post my best CaK pictures.
Last edited by Valery on Mon Aug 27, 2018 6:57 pm, edited 1 time in total.
"Solar H alpha activity is the most dynamic and compelling thing you can see in a telescope, so spend accordingly." (c) Bob Yoesle.
Largest full size 185 - 356mm Dielectric Energy Rejection Filters (D-ERF) by ARIES Instruments.
Largest full size 185 - 356mm Dielectric Energy Rejection Filters (D-ERF) by ARIES Instruments.
Re: August 16 2018 AR12718 3 bands 280mm scope.
I hope so, too! I, for one, would very much like to see them!
Frank
Frank