Sunspot 1520

aspeed

Newbie

Posts: 35

Sunspot 1520

« on: July 14, 2012, 10:08:41 AM »

There is quite a large sunspot visible at the moment. Imaging details are as folllows:

Thousand Oaks off centre solar filter on front of Meade 8" SCT operating at f19
Imaging Source webcam with near infrared pass filter
1/626 sec. gain 496. gamma 100.
600 frames stacked in Registax 5 and sharpened in Registax 6

I've done little sunspot imaging in the past and this image is not particulalry good but it has shown me that sunspot processing in Registax is different again to planets - inparticular I was able to apply much more sharpening, probably because the image was noise free because of the low gain.

Arthur


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flamencopaul

Sr. Member

Posts: 399

Re: Sunspot 1520

« Reply #1 on: July 14, 2012, 12:45:21 PM »

Hi Arthur...plenty of detail in this image, but perhaps you overdid the sharpening? If you haven't already, I recommend you download and read the articles by Eric Roel and Sylvain Weiller on the Registax site. Looking forwards to seeing more solar images from you.

Paul.


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aspeed

Newbie

Posts: 35

Re: Sunspot 1520

« Reply #2 on: July 14, 2012, 05:56:16 PM »

Paul,

I think you are correct - thanks for pointing it out. I was trying to bring out the granulation. Also probably to much "curves". Attached is a toned down version.

Arthur


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