Solar granulation and Ha 15th July
- Carbon60
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Solar granulation and Ha 15th July
I rolled out the 250mm RCT this morning although the conditions were not good wrt seeing and the SER video files were quite a mess. Even with 2x2 binning, shortening the exposure time to 0.8 ms to maximise the chances of freezing the turbulence, I struggled to capture anything really 'solid' for Imppg to process and the end results are a bit soft.
Lunt 35mm Etalon
Basler acA1920-155um camera
TV Powermate 2.5x
Genika Astro image capture (60 seconds at 0.8ms)
AS!3 (1% of 9982 frames)
Imppg
PixInsight
20180715_AR_250RCT_mono by Stuart Green, on Flickr
20180715_AR_250RCT_colour by Stuart Green, on Flickr
I then moved on to capture an image of solar granulation using a broadband (7nm red Ha filter). Pity there are no sunspots.
20180715_Granulation_mono by Stuart Green, on Flickr
20180715_Granulation_colour by Stuart Green, on Flickr
Thanks for looking.
Stu.
Lunt 35mm Etalon
Basler acA1920-155um camera
TV Powermate 2.5x
Genika Astro image capture (60 seconds at 0.8ms)
AS!3 (1% of 9982 frames)
Imppg
PixInsight
20180715_AR_250RCT_mono by Stuart Green, on Flickr
20180715_AR_250RCT_colour by Stuart Green, on Flickr
I then moved on to capture an image of solar granulation using a broadband (7nm red Ha filter). Pity there are no sunspots.
20180715_Granulation_mono by Stuart Green, on Flickr
20180715_Granulation_colour by Stuart Green, on Flickr
Thanks for looking.
Stu.
H-alpha, WL and Ca II K imaging kit for various image scales.
Fluxgate Magnetometers (1s and 150s Cadence).
Radio meteor detector.
More images at http://www.flickr.com/photos/solarcarbon60/
Fluxgate Magnetometers (1s and 150s Cadence).
Radio meteor detector.
More images at http://www.flickr.com/photos/solarcarbon60/
- Valery
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Re: Solar granulation and Ha 15th July
Very nice images taken into account such a seeing.
Better luck with a good seeing is what we all need first of all.
Valery
Better luck with a good seeing is what we all need first of all.
Valery
"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.
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Re: Solar granulation and Ha 15th July
Hi Stu...
Good images despite the seeing.
The granulation worked out best, just wondered if the Ha and WL are the same image scale?
Brian
Good images despite the seeing.
The granulation worked out best, just wondered if the Ha and WL are the same image scale?
Brian
Brian Colville
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
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
- marktownley
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Re: Solar granulation and Ha 15th July
They came out well Stu, my seeing was shot most of the time. 50mm was about my limit...
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!
- Valery
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Re: Solar granulation and Ha 15th July
Stue,
I looked at my yesterday's H-a images I see that I do use smaller scale than you do, while my telescope is 110% in size. I think you will get better results with somewhat smaller scale at the camera chip. This will makes your H-a images sharper and better looking. Not say about shorter exposures, shorter cadence of the movies, better atmosphere freezing.
When my seeing is not exellent, I always make the scale 30% smaller and this really helps.
Valery
I looked at my yesterday's H-a images I see that I do use smaller scale than you do, while my telescope is 110% in size. I think you will get better results with somewhat smaller scale at the camera chip. This will makes your H-a images sharper and better looking. Not say about shorter exposures, shorter cadence of the movies, better atmosphere freezing.
When my seeing is not exellent, I always make the scale 30% smaller and this really helps.
Valery
Last edited by Valery on Mon Jul 16, 2018 2:23 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.
- Montana
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Re: Solar granulation and Ha 15th July
These are great Stu! no chance for solar for me this weekend as I was so busy with chores and visiting friends. Hope you had a lovely holiday
Alexandra
Alexandra
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Re: Solar granulation and Ha 15th July
Great HR images Stu
Pedro Re'
https://pedroreastrophotography.com/
https://pedroreastrophotography.com/
- p_zetner
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Re: Solar granulation and Ha 15th July
Love the granulation images. Looks like seeing was fighting against you for the H alpha.
Cheers, peter.
Cheers, peter.
- Carbon60
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Re: Solar granulation and Ha 15th July
Many thanks for the advice, Valery.Valery wrote: ↑Mon Jul 16, 2018 7:29 am Stue,
I looked at my yesterday's H-a images I see that I do use smaller scale than you do, while my telescope is 110% in size. I think you will get better results with somewhat smaller scale at the camera chip. This will makes your H-a images sharper and better looking. Not say about shorter exposures, shorter cadence of the movies, better atmosphere freezing.
When my seeing is not exellent, I always make the scale 30% smaller and this really helps.
Valery
Stu.
H-alpha, WL and Ca II K imaging kit for various image scales.
Fluxgate Magnetometers (1s and 150s Cadence).
Radio meteor detector.
More images at http://www.flickr.com/photos/solarcarbon60/
Fluxgate Magnetometers (1s and 150s Cadence).
Radio meteor detector.
More images at http://www.flickr.com/photos/solarcarbon60/
- Carbon60
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Re: Solar granulation and Ha 15th July
Many thanks for your kind feedback everyone.
Stu.
Stu.
H-alpha, WL and Ca II K imaging kit for various image scales.
Fluxgate Magnetometers (1s and 150s Cadence).
Radio meteor detector.
More images at http://www.flickr.com/photos/solarcarbon60/
Fluxgate Magnetometers (1s and 150s Cadence).
Radio meteor detector.
More images at http://www.flickr.com/photos/solarcarbon60/
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Re: Solar granulation and Ha 15th July
The WL shots came out very clean Stu, I must try my Ha 7nm with the SCT now ;-) , 60 seconds is a long time for a capture though, won't you end up with a lot of frames that have movement thus reducing the amount of best 'the same detail' frames to stack Stu ? just a thought.
I have found that you don't always need a very quick capture rate, 6Ms is my normal 'speed' but 8Ms - 12Ms also give great results & I never capture in 8Bit anymore ;-)
I have found that you don't always need a very quick capture rate, 6Ms is my normal 'speed' but 8Ms - 12Ms also give great results & I never capture in 8Bit anymore ;-)