Much better seeing
Much better seeing
The high cloud layer was gone, the atmosphere was steadier, and there was a bright new prom (on the WNW side in this image) when I took a quick look after work yesterday.
Had to take a picture
Lunt LS80THa
ZWO ASI174MM
Had to take a picture
Lunt LS80THa
ZWO ASI174MM
Last edited by Bruce Girrell on Thu Mar 29, 2018 11:04 pm, edited 1 time in total.
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Re: Much better seeing
The prom was quite bright when I first looked at it. It was fading as I made my full disk exposure. A mere 8 minutes later, only enough time to screw the 5x Powermate in place, refocus and readjust, and the prom had faded considerably.
I think they show up best if you click on the BW image
LuntLS80THA
5x Powermate
ZWO ASI174MM
I think they show up best if you click on the BW image
LuntLS80THA
5x Powermate
ZWO ASI174MM
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Re: Much better seeing
Thanks Alexandra
I tried reworking it today with some suggestions from Mark Townley's processing video. Two things in particular were helpful:
1) Flattening the brightness range of the image using a heavily median filtered copy of the image and
2) Keeping an eye on the histogram as you're making adjustments
Thanks Mark
I like the detail in the disk better, but I lost some in the proms. Flattening the image takes a little practice to see what works best. The simple Darken curve didn't work for me and I used the Curves dialog as normal, which produced a good result. You have to play a bit. I have always relied heavily on the histogram, but I hadn't realized that Photoshop's dedicated histogram window shows both the original and the result of your adjustment as you're doing it. Very helpful.
I tried reworking it today with some suggestions from Mark Townley's processing video. Two things in particular were helpful:
1) Flattening the brightness range of the image using a heavily median filtered copy of the image and
2) Keeping an eye on the histogram as you're making adjustments
Thanks Mark
I like the detail in the disk better, but I lost some in the proms. Flattening the image takes a little practice to see what works best. The simple Darken curve didn't work for me and I used the Curves dialog as normal, which produced a good result. You have to play a bit. I have always relied heavily on the histogram, but I hadn't realized that Photoshop's dedicated histogram window shows both the original and the result of your adjustment as you're doing it. Very helpful.
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Re: Much better seeing
Nice images Bruce. The LUNT80 is great
Pedro Re'
https://pedroreastrophotography.com/
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Re: Much better seeing
Nice images Bruce
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!
Re: Much better seeing
Thanks all
And thanks for making your video tutorials, Mark. I should have mentioned your use of the iterative unsharp mask also. It is clear that a 10% USM, applied 10 times is superior to a 100% USM of the same size. Sometimes after applying the action, I find that the 10x is a little too much, but the History allows me to step back into the succession of USM applications and choose the sharpness that I like. Another advantage.
And thanks for making your video tutorials, Mark. I should have mentioned your use of the iterative unsharp mask also. It is clear that a 10% USM, applied 10 times is superior to a 100% USM of the same size. Sometimes after applying the action, I find that the 10x is a little too much, but the History allows me to step back into the succession of USM applications and choose the sharpness that I like. Another advantage.
Last edited by Bruce Girrell on Tue Apr 03, 2018 1:16 am, edited 2 times in total.
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Re: Much better seeing
Glad you find the tutorials useful Bruce
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!
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Re: Much better seeing
Excellent capture and processing Bruce...well done
Brian
Brian
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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
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: Much better seeing
Nicely done, Bruce. Lovely prom images.
Stu.
Stu.
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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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