Sunspot Group AR2529 - Departing Shot

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Sunspot group AR2529 - Departing shot
Taken by Maximilian Teodorescu on April 18, 2016 @ Dumitrana, Romania

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Date Taken: 2016:04:19 14:33:47

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Found some good frames among the data acquired yesterday. Now the granulation and details inside the umbra and penumbra are observable. This was imaged with a filtered 8 inch scope (200mm, F/5 Newtonian) and ASI 174MM camera with a Red filter.

Photographer's website:

http://https://maximusphotography.wordpress.com/2016/04/19/sunspot-ar2529-departing-shot-april-18-2016/

Comments

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Congratulations on what is by far the best white light image in recent times. Many people do not appreciate the challenges of w/l imaging, particularly near the solar limb, resulting in horrendous ugly images. An 8 inch, or larger, scope is essential if granular detail is to be captured. You may wish to give consideration to a dedicated de-aluminized scope which can produce outstanding images in good conditions. Post processing with Autostakkert and ImPPG can be an major asset as well.

Posted by whrudey 2016-04-20 10:30:53

Thank you so much for your kind words! You are correct regarding the difficulties of near-the-limb images: they are indeed harder to acquire and process correctly.
I am actually considering to de-aluiminize the 8 inch mirror for solar imaging in W/L only.
All processing for my images are done using Autostakkert2 for alingning and selection of frames,and AstraImage for deconvolution or other post processing. Thanks for the advices!
Here is my best shot in W/L at AR2529 using a 14 inch scope this time:
https://maximusphotography.files.wordpress.com/2016/04/ar2529colorrebuild.jpg

Posted by MaximilianT 2016-04-21 04:56:07

Hi Max;

Liked your image - a challenge for BBSO. Size does make a difference. You may find the following link to be of interest:

http://solarchat.natca.net/viewtopic.php?f=9&t=18204

It deals with the trials and tribulations I faced with my 8 inch Solar Newtonian scope. Am now designing a 12 1/2 inch Solar Newton.

You may also enjoy my collage of AR2529 - view in the enlarged format though plus the +.

Pleased to see that more folks are getting into w/l solar imaging - I find it more challenging than H1a.

Bill

Posted by whrudey 2016-04-21 09:30:09

Sorry Max, neglected to provide the link to the collage:

http://solarchat.natca.net/viewtopic.php?f=4&t=19449

Bill

Posted by whrudey 2016-04-21 10:04:30

Dear Bill,

Very nice post regarding your 8 inch solar Newt! When I shall be completely focused on changing my 8 inch into a solar scope, I will for sure contact you regarding some details on what and how:) It does seem that it could be the best way of getting further into WL solar imaging. Perhaps a 12 inch mirror is also a good way, of course de-aluminized. Good luck with your ongoing project!
Keep in touch,
Max.

Posted by MaximilianT 2016-04-24 07:40:07

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