AR12678 31st July
- marktownley
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AR12678 31st July
Hi All,
Yesterday was up and early first thing with blue skies before the rising heat took temperatures into the mid 30s by the afternoon and then by evening the temperature had dropped 10 degrees accompanied by thunderstorms, all in a days weather! I was keen to refresh my memory of my 5" scope, this has been stopped down to 118mm to take it to f10, and the spacing between the flint and crown components of the objective increased to improve performance at either end of the spectrum. I'm pleased with it's performance in Ha, and when seeing allows is a good scope at 656nm, and if seeing does not allow I have the fall back of the SM90. In CaK it's not as good, and the images are soft, much softer than with the 100mm TaL refractor, however it's fun to try, and with this shot the seeing was definitely not quite as good as the aperture allowed, but it just about works and gives nice scale. (118mm f27). Camera for both shots was the FLIR IMX174, and with suitably (transparent) filtration exposure time is kept short of 5ms at all times.
ar12768-cak-bw by Mark Townley, on Flickr
ar12768-cak-colour by Mark Townley, on Flickr
ar12768-Ha-bw by Mark Townley, on Flickr
ar12768-Ha-colour by Mark Townley, on Flickr
It's nice to have some activity to look at currently!
Hope is sunny where you are, looks like i'm in for a day of cloud...
Mark
Yesterday was up and early first thing with blue skies before the rising heat took temperatures into the mid 30s by the afternoon and then by evening the temperature had dropped 10 degrees accompanied by thunderstorms, all in a days weather! I was keen to refresh my memory of my 5" scope, this has been stopped down to 118mm to take it to f10, and the spacing between the flint and crown components of the objective increased to improve performance at either end of the spectrum. I'm pleased with it's performance in Ha, and when seeing allows is a good scope at 656nm, and if seeing does not allow I have the fall back of the SM90. In CaK it's not as good, and the images are soft, much softer than with the 100mm TaL refractor, however it's fun to try, and with this shot the seeing was definitely not quite as good as the aperture allowed, but it just about works and gives nice scale. (118mm f27). Camera for both shots was the FLIR IMX174, and with suitably (transparent) filtration exposure time is kept short of 5ms at all times.
ar12768-cak-bw by Mark Townley, on Flickr
ar12768-cak-colour by Mark Townley, on Flickr
ar12768-Ha-bw by Mark Townley, on Flickr
ar12768-Ha-colour by Mark Townley, on Flickr
It's nice to have some activity to look at currently!
Hope is sunny where you are, looks like i'm in for a day of cloud...
Mark
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Re: AR12678 31st July
Well done Mark. And the new area on the east limb looks promising. Clouds here.
Dan
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- Montana
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Re: AR12678 31st July
Very nice images indeed Mark for some reason my magnifier glass on Flickr doesn't work on this computer and so I have to go to view all sizes then large, any ideas how I can set the magnifier or is that a default in Flickr?
They do look good at full size though
Alexandra
They do look good at full size though
Alexandra
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Re: AR12678 31st July
A fine set of images. How did you establish the optimal lens spacing for H-alpha ?
Raf
My solar images and reports with articles on solar equipment
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- marktownley
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Re: AR12678 31st July
Thanks Dan, Alexandra and Raf!
Alexandra, i've no idea how to do the magnifier thing in flickr? When I click on them it just pulls them up large then I click again for full size.
Raf, I just put some thicker foil spacers between the lenses (take away food carton) - nothing scientific, just probably increased the spacing by 100%.
In the mean time here's a 8 frame ani over 7 minutes of some coronal rain from that flame prom,
coronal-rain by Mark Townley, on Flickr
Alexandra, i've no idea how to do the magnifier thing in flickr? When I click on them it just pulls them up large then I click again for full size.
Raf, I just put some thicker foil spacers between the lenses (take away food carton) - nothing scientific, just probably increased the spacing by 100%.
In the mean time here's a 8 frame ani over 7 minutes of some coronal rain from that flame prom,
coronal-rain by Mark Townley, on Flickr
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Re: AR12678 31st July
A lot of action there in the animation for 7 minutes!
Dan
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- marktownley
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Re: AR12678 31st July
I was surprised too!
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Re: AR12678 31st July
I love the AR and the prom. Clean and crisp, both.
Jack
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Re: AR12678 31st July
Hi Mark,
Very good images. Interesting is that in CaK you see the pores and in H-alpha they are not visible.
Very good images. Interesting is that in CaK you see the pores and in H-alpha they are not visible.
regards Rainer
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Observatorio Real de 14
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Re: AR12678 31st July
Excellent results, Mark I see you finally was blessed with a good seeing. Love all these images and animation.
Valery
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Re: AR12678 31st July
Mark:
Beautiful even and clean images, as also the super animation.
Best regards,
Eric.
Beautiful even and clean images, as also the super animation.
Best regards,
Eric.
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Re: AR12678 31st July
Great images and animation Mark. The sun is getting more active
Pedro Re'
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Re: AR12678 31st July
great images mark love the animation its being a bit rude though don't you think haha
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Re: AR12678 31st July
Very nice work Mark! All are great but I love the big prom rain animation. That is a lot of ongoing change for seven minutes. That is one thing I love about solar astronomy. The Sun is always in constant motion/change.
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Re: AR12678 31st July
Amazing as always, and killer detail in that animation!
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Re: AR12678 31st July
Superb images, Mark. Your seeing conditions were better than mine and you can see that with your superior resolution of the finer details in CaK. Lovely.
The animation is sublime. Beautifully captured plasma rain condensing from the tall stack. Quite mesmerising.
Stu.
The animation is sublime. Beautifully captured plasma rain condensing from the tall stack. Quite mesmerising.
Stu.
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Re: AR12678 31st July
Thanks everyone for your kind comments! Very much appreciated.
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Re: AR12678 31st July
Hi Mark,
Congratulations for the SPoD. Well deserved.
Congratulations for the SPoD. Well deserved.
regards Rainer
Observatorio Real de 14
San Luis Potosi Mexico
North 22° West 101°
Observatorio Real de 14
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North 22° West 101°
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Re: AR12678 31st July
Whoop whoop! Thanks for the SPoD!
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Re: AR12678 31st July
Superb animation Mark
Brian
Brian
Brian Colville
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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