H-alpha SHG full-disk and high-resolution, morning of July 14

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thesmiths
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H-alpha SHG full-disk and high-resolution, morning of July 14

Post by thesmiths »

We continue to practice taking high-resolution (700mm focal length, 106mm aperture) H-alpha images over a wide area (using our custom made 12mm long lithographic slits). First a full disk image, reduced by 50%. The best 5 of 20 SHG images stacked with AS3!, Imppg, Photoshop.

H-alpha full disk SHG. 700mm FL, 106mm aperture, APO triplet. 5 best SHG images stacked of 26. Imppg, Photoshop. Morning of July 14.
H-alpha full disk SHG. 700mm FL, 106mm aperture, APO triplet. 5 best SHG images stacked of 26. Imppg, Photoshop. Morning of July 14.
140722-Ha-700mm-stack-5-20_small.jpg (566.19 KiB) Viewed 444 times

We did our best to get most of the disk in good focus but we still had a problem with the bottom part. Here is a closeup near the central region which is in good focus and also has a lot of interesting structures. 100% crop of the above (click on the image to see at higher resolution).

H-alpha SHG, closeup of AR 3057 and 3053. Video data taken 07:03 to 07:09 UTC.
H-alpha SHG, closeup of AR 3057 and 3053. Video data taken 07:03 to 07:09 UTC.
140722-Ha-700mm-stack-5-20_tightcrop.jpg (913.02 KiB) Viewed 444 times

In the following image, we tried our best to improve focus on the lower part of the disk. The best 6 of 24 SHG images stacked with AS3!, Imppg, Photoshop. Unfortunately, the image is not quite as sharp as the preceding one.

H-alpha SHG, closeup of AR 3056 and 3055. Video data taken 07:20 to 07:29 UTC.
H-alpha SHG, closeup of AR 3056 and 3055. Video data taken 07:20 to 07:29 UTC.
140722-Ha-3-700mm-6-24_tightcrop.jpg (708.96 KiB) Viewed 429 times

You can compare these images to our previous effort viewtopic.php?t=37031 (acquisition settings were similar) and to NISP in Spain, taken around the same time viewtopic.php?t=37079.


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Valery
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Re: H-alpha SHG full-disk and high-resolution, morning of July 14

Post by Valery »

Fantastic - all I can say.

Looking for images taken with improved optics and at a larger scale.


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Re: H-alpha SHG full-disk and high-resolution, morning of July 14

Post by Montana »

Absolutely terrific :bow :bow :bow

Alexandra


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