Dear All,
Here are some additional images of AR 2659 taken with the 300 mm solar Newtonian and various filters.
May 26 with the 540 nm filter, there are some ombral dots :
May 27, with the 540 nm filter again, there are some faculae on the left on the sunspot group :
Same day with the 500 nm filter, the resolution increases as well as the contrast of faculae :
With the G band filter, the seeing gets worse, but the resolution gets really good in some parts of the image :
Farewell to the spot on May 29, with the 540 nm filter again:
The 500 nm (OIII) is a good all around filter for observation of the photosphere, still not well known.
AR 2659 on May 26,27 & 29 with the 300 Newtonian and various filters
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AR 2659 on May 26,27 & 29 with the 300 Newtonian and various filters
Christian Viladrich
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Co-author of "Planetary Astronomy"
http://planetary-astronomy.com/
Editor of "Solar Astronomy"
http://www.astronomiesolaire.com/
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Re: AR 2659 on May 26,27 & 29 with the 300 Newtonian and various filters
Excellent series of images, Christian!
Very nice resolution! I am green envy for such a seeing quality .
Valery.
Very nice resolution! I am green envy for such a seeing quality .
Valery.
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Largest full size 185 - 356mm Dielectric Energy Rejection Filters (D-ERF) by ARIES Instruments.
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Re: AR 2659 on May 26,27 & 29 with the 300 Newtonian and various filters
Thanks Christian and good to know about the filters.
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Re: AR 2659 on May 26,27 & 29 with the 300 Newtonian and various filters
Super duper nice! Amazing detail!
Very best,
Very best,
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Re: AR 2659 on May 26,27 & 29 with the 300 Newtonian and various filters
HI Christian;
As usual, your images are outstanding. You continue to be the "gold standard" the rest of us aspire to.
Many thanks,
Bill
As usual, your images are outstanding. You continue to be the "gold standard" the rest of us aspire to.
Many thanks,
Bill
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Re: AR 2659 on May 26,27 & 29 with the 300 Newtonian and various filters
Outstanding resolution Christian
Brian
Brian
Brian Colville
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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
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Re: AR 2659 on May 26,27 & 29 with the 300 Newtonian and various filters
Wonderful images, Christian. Beautiful detail.
Stu.
Stu.
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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: AR 2659 on May 26,27 & 29 with the 300 Newtonian and various filters
Christian,
I see Optolong have a reasonably priced OIII (25nm bandwidth) filter.
Any comment? Do you think there would be the same improvement as you found with the 10nm version?
I see Optolong have a reasonably priced OIII (25nm bandwidth) filter.
Any comment? Do you think there would be the same improvement as you found with the 10nm version?
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https://groups.io/g/astronomicalspectroscopy
http://astronomicalspectroscopy.com
"Astronomical Spectroscopy for Amateurs" and
"Imaging Sunlight - using a digital spectroheliograph" - Springer
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