The Sun July 20th 2016; AR2567 & AR2565 (comparison continuum and H-Alpha)

[pietervdv]

Hi all,

 

Very nice and sunny day yesterday, seeing pretty good aswell! This combined image shows AR2567 & AR2565 with 2 very different etalon tunings.

Tuning the etalon as far as possible off-band, a near continuum white light is achieved (granulation also showing). The images were made +/- 5 minutes apart,

and clearly show very different details in each.

 

Camera was a DMK31, made with 150mm pst mod Solar scope.

Thanks for checking them out!

 

Best Regards,

Pieter

[Stu]

Excellent images Pieter, and a really interesting comparison. That PST mod is obviously working very nicely!!

[laudropb]

Very nice images and a good comparison.

[Davey-T]

Super images and nice comparison between them, can't beat a big frac for solar.

Dave

[David Smith]

Great comparison.

[Pete Presland]

Love to see the various wavelengths,  a very nice comparison. 

[Radec]

Excellent images & a very interesting comparison.

Is this a single stack etalon? What's the mod if you don't mind me asking?

[Iainp]

What a fantastic idea, and a great result. If I ever get my Lunt working again I'll be trying this out. 

Iain 

[pietervdv]

3 hours ago, Radec said:

Excellent images & a very interesting comparison.

Is this a single stack etalon? What's the mod if you don't mind me asking?

Thanks for checking it out, glad you like it! 

Yes, it is a single stack etalon. Kind of hard to explain in two sentences on my phone now... But you can find some details concerning the scope here: 

https://pietervandevelde.smugmug.com/Pics/Solar-equipm/

Let me know if you want more info...

Regards,

Pieter 

 

 

[cshahar]

Superb comparison Peter. Fascinating really.

-Charles

[spaceboy]

Crikey they are dead good Peter !! Very impressive the WL and you say that is through the PST mod?