22Nov20 - AR12783 in CAK (New images added on 23Nov)

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22Nov20 - AR12783 in CAK (New images added on 23Nov)

Post by yltansg » Sun Nov 22, 2020 2:03 am

22Nov20, 0750am local time.

Image

It was a cloudy morning. Managed to record 3 CAK videos using a C11 fitted with ARIES D-ERF (with 9" mask), pair of Chroma filter in Skybender + x2.5 Televue Powermate + ASI14MM camera.

Despite a layer of cloud, this image came out:

Image

Please do a right click to see the image in its full resolution.

Alfred
Last edited by yltansg on Mon Nov 23, 2020 12:13 pm, edited 3 times in total.



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Re: 22Nov20 - AR12783 in CAK

Post by rsfoto » Sun Nov 22, 2020 3:11 am

Hi Alfred,

Excellent


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Re: 22Nov20 - AR12783 in CAK

Post by DeepSolar64 » Sun Nov 22, 2020 3:33 am

I see supergranulation!


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Re: 22Nov20 - AR12783 in CAK

Post by yltansg » Sun Nov 22, 2020 4:20 am

DeepSolar64 wrote:
Sun Nov 22, 2020 3:33 am
I see supergranulation!
Dear James,

I am happy to see the supergraulation with minimum processing. This image was achieved with 170 frame stacking, ImPPG processing and level and contrast adjustment in Photoshop.

Alfred



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Re: 22Nov20 - AR12783 in CAK

Post by Carbon60 » Sun Nov 22, 2020 6:51 am

Nice image, Alfred, even through the cloud layer.

Stu.


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Re: 22Nov20 - AR12783 in CAK

Post by marktownley » Sun Nov 22, 2020 8:17 am

Very nice Alfred! That filter combination works well. My sky looks like yours does this morning, hopefully I will get to image later on today.


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Re: 22Nov20 - AR12783 in CAK

Post by yltansg » Sun Nov 22, 2020 8:24 am

Carbon60 wrote:
Sun Nov 22, 2020 6:51 am
Nice image, Alfred, even through the cloud layer.

Stu.
Hi Stuart,

Thanks for your compliment. The seeing wasn't good at all. I could see wavy parts in the movie. In this case, somehow, the thin cloud layer did not result in significant image quality loss. In fact, it seems to have brought about better "contrast" in the video.

Alfred



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Re: 22Nov20 - AR12783 in CAK

Post by yltansg » Sun Nov 22, 2020 8:56 am

marktownley wrote:
Sun Nov 22, 2020 8:17 am
Very nice Alfred! That filter combination works well. My sky looks like yours does this morning, hopefully I will get to image later on today.
Hi Mark,

By the time I reply to your posting, it will be about 8:50 am at your location. Hope you have clear skies for imaging.

Today, I was reminded again that it may not look good in the morning and the forecast may be bad, but there may still be an opportunity for imaging.

Image

Today is one of those days where I was really not sure if I should go to the observatory. The forecast was rain. On my way to the observatory at 7:04am, it looked like it was going to rain (1st picture). The 2nd picture was taken at the observatory at 7:20am, it did not look good. Then came a less cloudy window from 7:50 to 8:10 am which I was busy recording. No time to take photo of the sky. Then clouds gathered after 8:15am when I was setting up the H-Alpha equipment. The 3rd photo was taken at 8:50am when I decided that the clouds would not go again and started to pack up. The clouds stayed and they covered the sky at 10 am (last photo). Finally it rained at 1 pm. Lessons learnt again for me: Get ready to image even if the sky is covered with clouds in the morning and even if the forecast is rain. :lol:



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Re: 22Nov20 - AR12783 in CAK (Best Image added 23Nov)

Post by yltansg » Mon Nov 23, 2020 10:49 am

Finally found time to do some post processing.

This is by far the best High-res CAK image. Taken at 7:50 am local time. It is formed from stacking 25 selected frames. Only minor level and contrast adjustment in Photoshop.

Image

Please right click to see the image in its full resolution.

More images on the way....

Alfred



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Re: 22Nov20 - AR12783 in CAK (Image added 23Nov, my best CAK)

Post by yltansg » Mon Nov 23, 2020 12:12 pm

Taken on the same day:

Image

Image



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Re: 22Nov20 - AR12783 in CAK (New images added on 23Nov)

Post by LTHB » Tue Nov 24, 2020 9:56 am

Very nice captures! The filters seem to working great and, judging from the resolution, you are having terrific seeing!

I'm looking forward to more of your CaK images! (I'll probably be clouded out for many weeks over here.)

Frank



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Re: 22Nov20 - AR12783 in CAK (New images added on 23Nov)

Post by Montana » Tue Nov 24, 2020 11:58 am

These are terrific Alfred :bow :hamster:
However just be careful about losing the detail in the blacks (umbra) :)

Alexandra



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Re: 22Nov20 - AR12783 in CAK (New images added on 23Nov)

Post by yltansg » Wed Nov 25, 2020 11:39 am

Montana wrote:
Tue Nov 24, 2020 11:58 am
These are terrific Alfred :bow :hamster:
However just be careful about losing the detail in the blacks (umbra) :)

Alexandra
Thanks Alexandra for your feedback. I guess I have to learn how to do masking and layers in PS in order to preserve the details in umbra :)

Alfred



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Re: 22Nov20 - AR12783 in CAK (New images added on 23Nov)

Post by Lowjiber » Wed Nov 25, 2020 12:48 pm

Very nice images, Alfred! I also enjoyed the pics from your driveway.:)

Thanks much.

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Re: 22Nov20 - AR12783 in CAK (New images added on 23Nov)

Post by yltansg » Thu Nov 26, 2020 10:01 am

Hi John,

Thanks for your comments.

I have started taking a photo of the sky in the morning, no matter how bad it looks. The record looks interesting. Many times, I was pleasantly surprised when the skies provided imaging window (however small) despite starting with very cloudy skies.

How is the weather in Vegas now?

Alfred



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Re: 22Nov20 - AR12783 in CAK (New images added on 23Nov)

Post by eroel » Thu Nov 26, 2020 1:48 pm

Alfred:
Very good images.
Best regards,
Eric.



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Re: 22Nov20 - AR12783 in CAK (New images added on 23Nov)

Post by MapleRidge » Sat Nov 28, 2020 12:33 am

These are outstanding images Alfred...excellent work :bow

Brian


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