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Questar Solar Images

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#1 PKH

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Posted 19 July 2021 - 11:58 PM

Our Questars are quite capable of excellent solar imaging. This might be a good place to show what can be accomplished with the right techniques and equipment. As the activity on the sun increases over the next few years it should be exciting to see what interesting features await discovery and capture.

 

Todays sun 7/19 had little to offer, other than the usual heat and light, when seen in white light. The low resolution full disk image shows two numbered active regions and a new spot just coming into view from the East. Next week should be more interesting as two active regions come into  view.

 

The resolution of full disk images are severely limited by the posting restrictions here but our Questars are capable of much finer details. The extreme magnification produced using a 5x Powermate gives a hint of what is possible. Seeing conditions need to be better than they were today though.

 

The full disk image was taken using the Baader solar film and 540nm continuum filter. A .5x focal reducer was attached to the camera. The camera has a Sony 694 CCD, 1”, 6MP chip. The Sun’s image just fit and focus was almost at the end of it’s range (screwed all the way in). 500 individual frames were recorded and 50 frames were stacked. The resulting image was sharpened , colorized , cropped, and scaled down to 54% of the original and compressed.

 

The magnified images used the solar film and 540nm filter followed by a 5x Powermate and camera with a Sony ICX285, 2/3” CCD chip with 6.45um pixels. The processing was similar.

 

I hope to learn from the experts here in time for the solar maximum.

 

PK

 

July 19 FD1200c2.jpg


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#2 PKH

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Posted 20 July 2021 - 12:00 AM

Here are the closeup images taken July 19th.

 

20210719_093927_AR12842.JPG

 

20210719_AR 12845.JPG

 

20210719_092325_new_spot.JPG

 


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#3 Opie Taylor

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Posted 20 July 2021 - 08:56 AM

Wow, and thx for posting!



#4 PKH

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Posted 21 July 2021 - 05:57 PM

More than a dozen sunspots were visible today! I just had to capture some with the Questar and show them to you.

 

Similar setup as before with the Baader solar film, continuum filter, and a .5x focal reducer for the full disk but instead of a 5x Powermate, I combined a 2x and a 1.5x Barlow for the close up shots.

 

PK

 

July 21 2021 FD.jpg


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#5 PKH

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Posted 21 July 2021 - 06:02 PM

Close up images from July 21.

 

AR12846 

20210721_AR12846.jpg

 

AR12842

20210721_AR12842.jpg

 

AR12845

20210721_AR12845.jpg

 

AR12847

20210721_AR12847.jpg

 

No designation for this group yet

20210721_No_name.jpg


Edited by PKH, 21 July 2021 - 06:13 PM.

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#6 PKH

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Posted 22 July 2021 - 01:33 PM

Today, July 22, was a great day for observing/imaging the Sun through a Questar. Seven active regions and six of those with sunspots! It seems like we’re out of the solar minimum now.

 

I got an early start today and imaged through clear and steady skies. While there were no large spots, just the sheer number of spots and different regions made it interesting.

 

PK

 

 

SolarMonitor.jpg

 

 

20210722_FD.jpg

 


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#7 PKH

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Posted 22 July 2021 - 01:38 PM

Here are some closeups imaged on July 22.

 

AR 12846

20210722_12846.jpg

 

AR12848

20210722_12848.jpg

 

AR12842

20210722_12842.jpg

 

AR12845

20210722_12845.jpg

 

AR12849 and AR18247

20210722_12849_12847.jpg


Edited by PKH, 22 July 2021 - 02:36 PM.

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#8 ETXer

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Posted 22 July 2021 - 06:09 PM

All very nicely done!

 

I managed to grab a few captures today with the Q with the basic off-axis solar filter and a Baader Continuum filter, we’ll see how they turn out (but I’m sure not as high quality as these images). I’m also in the process of amassing a H-alpha setup (one component at a time) for the Q beginning with a Quark Chromosphere and on from there. Hopefully I’ll be able to get started in the fall.

 

Mauri R. (mtr1) has posted some outstanding H-alpha work with the Q here that further illustrates another one of the many ways the Questar can be employed.

 

Cheers, Allan


Edited by ETXer, 22 July 2021 - 08:17 PM.


#9 PKH

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Posted 22 July 2021 - 11:27 PM

Thanks Allan. I hope you post some images here, white light for now and Ha when you get that set up. Solar imaging is a blast. You never know what to expect and every day is different. More so with Ha, flares and surge prominences may last only minutes or even less. The beauty of the chromosphere can become addictive.

 

Oh yes, I know of Mauri’s work and accomplishments with a Questar. He has and continues to advance imaging techniques using a Q. I saw a paper he wrote on imaging. Very helpful indeed. Would I be going too far to call him a Questar imaging guru?

 

I hope to use my ‘61 Q for Ha imaging someday as well.

 

PK


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