AR2733-Jan 29 and 28 2019
AR2733-Jan 29 and 28 2019
Here are my over processed contributions of AR2733 before it falls off the limb.
The first is from January 29th and the second is a cropped version from the 28th.
Phil
Quantum 6 and Solar Spectrum
The first is from January 29th and the second is a cropped version from the 28th.
Phil
Quantum 6 and Solar Spectrum
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Re: AR2733-Jan 29 and 28 2019
You're treating us to some really excellent images here! Glad the sun is shining for you!
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Re: AR2733-Jan 29 and 28 2019
The first image is at the extreme edge of 6" aperture resolution!
Thanks,
Valery
Thanks,
Valery
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Re: AR2733-Jan 29 and 28 2019
Indeed! I think your seeing conditions must be spot on!
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Re: AR2733-Jan 29 and 28 2019
Thanks for all the replies and comments. We all know that seeing is everything but a little luck helps as well. When recording the videos, I didn't think the seeing was anything exceptional and seemed to fluctuate between slow undulations and high speed vibrations. It was clear most of those two days. Many videos were captured in hopes of catching a calm period. I guess it worked.
After many days of tuning and tweaking the alignment of the Solar Spectrum etalon, I found that double stacking with the Quark Combo has resulted in very uneven field illumination and long exposure times. The resulting images were unsatisfactory with the seeing conditions.
The single stack allowed for < 5 ms exposures, using a focal reducer, 50% histogram, and a higher contrast gamma setting. Still only 28 fps. Processing in imppg could be altered from the norm with lower sigma settings and higher iterations. Lower sigma and higher amounts of unshared masking as well. In a photo editing program a gradient mask was applied and the usual curves and levels adjusted. A slight de-noise mainly to highlights seemed to help avoid the way over processed look. Then again it might have just been a good image stack to begin with.
Thanks again,
Phil
After many days of tuning and tweaking the alignment of the Solar Spectrum etalon, I found that double stacking with the Quark Combo has resulted in very uneven field illumination and long exposure times. The resulting images were unsatisfactory with the seeing conditions.
The single stack allowed for < 5 ms exposures, using a focal reducer, 50% histogram, and a higher contrast gamma setting. Still only 28 fps. Processing in imppg could be altered from the norm with lower sigma settings and higher iterations. Lower sigma and higher amounts of unshared masking as well. In a photo editing program a gradient mask was applied and the usual curves and levels adjusted. A slight de-noise mainly to highlights seemed to help avoid the way over processed look. Then again it might have just been a good image stack to begin with.
Thanks again,
Phil
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Re: AR2733-Jan 29 and 28 2019
Great images, Phil. Lovely resolution. That's a heck of a set-up.
Stu.
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Re: AR2733-Jan 29 and 28 2019
Very sharp set of images Phil...well done
Brian
Brian
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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