1st March disk

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robert
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1st March disk

Post by robert »

Another clear day with a bitter wind. UK covered in cloud except for NW, extremely unusual, the opposite way round is the norm.
Robert

Image0301 01_Mar_18_112043_g4_ap541 by robertarnold, on Flickr
0301 sat24.jpg
0301 sat24.jpg (180.83 KiB) Viewed 2501 times
Last edited by robert on Thu Mar 01, 2018 12:55 pm, edited 1 time in total.


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2023 images https://www.flickr.com/photos/69734017@ ... 0304905278
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Re: 1st March disk

Post by Ewan »

Very nice FD Robert, my solar season has been sporadic but always looking forwards.


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robert
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Re: 1st March disk

Post by robert »

Thanks Ewan, yes I agree. Take any chances if possible!


images and animations http://tinyurl.com/h5bgoso
2024 images https://www.flickr.com/photos/69734017@ ... 0313830045
2023 images https://www.flickr.com/photos/69734017@ ... 0304905278
ED80. ED100. Celestron-150mm-PST mod. C8 edge. ES127
LS60PT-LS60F-B1200. B600-Cak. PGR-Ch3-IMX265
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Re: 1st March disk

Post by Ibbo »

Nicely done.


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Re: 1st March disk

Post by Christopher »

The weekend weather here looks promising and so does that disk. Nice shot Robert.


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Re: 1st March disk

Post by eroel »

Robert:
Nice and clean FD.
Best wishes,
Eric.


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Re: 1st March disk

Post by ffellah »

Another fine disk, Robert !

Franco


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Re: 1st March disk

Post by rsfoto »

Nice nice nice and I have no chance to image at the moment

:cry:


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Re: 1st March disk

Post by MapleRidge »

Superb shot Robert :bow

Nice to see some return to activity in your image.

Brian


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Re: 1st March disk

Post by Montana »

That's a lovely AR developing :hamster: :bow very unusual to see a gap in the cloud up there :lol:
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Re: 1st March disk

Post by marktownley »

You were lucky with the weather there Robert! A great disk as a result.


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Re: 1st March disk

Post by rbenton »

I love the quality of your FD images. So evenly exposed, with just enough limb darkening to look spherical. It also looks like you are not combining two images (surface/proms) but I still see detail in both. Could you share how you get this look?
Still learning.

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Re: 1st March disk

Post by robert »

rbenton wrote: Sat Mar 03, 2018 12:41 am I love the quality of your FD images. So evenly exposed, with just enough limb darkening to look spherical. It also looks like you are not combining two images (surface/proms) but I still see detail in both. Could you share how you get this look?
Still learning.

Randall Benton
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Thanks Randall,
I guess I like a simple process.

1. Double stacked Pressure tuned scope. Pressure tuner gives an even start. I was lucky with the second etalon being onband with nearly no tilt so the image stays even when it is added. PGR Ch3 3.2Mpx gives a full disk with no mosaic with LS60, UV/IR cut filter and tilt adapter to remove Newton's rings.
First tune the scope PT very carefully with an overexposed image to get the filter effect central, then add the non adjusted second etalon with no tilt.

2. Firecapture using gamma to around 1000 to just see the prominences and not overexpose things, histogram 70% ish. 500 frames 37fps.

3. AS2 stack about 10%-20% then PS2 (Photoshop), iterative unsharp mask 30%, 1px, 0 threshold, until it becomes overdone then undo one or two iterations. Convert to RGB, add colour and boost brightness and contrast for the disk and cut red in levels to make the background less hazy red. Check, done.

Whole image processed the same way and only one exposure, which is what I prefer to do just now.

Robert
P5075583s.jpg
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images and animations http://tinyurl.com/h5bgoso
2024 images https://www.flickr.com/photos/69734017@ ... 0313830045
2023 images https://www.flickr.com/photos/69734017@ ... 0304905278
ED80. ED100. Celestron-150mm-PST mod. C8 edge. ES127
LS60PT-LS60F-B1200. B600-Cak. PGR-Ch3-IMX265
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Re: 1st March disk

Post by rbenton »

Thank you very much Robert. I'll give it a try.

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Re: 1st March disk

Post by marios i. »

Very nice!

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