Some Solar Full Disks and Close-ups

[yltansg]

The Sun in three wavelengths - Solar surface in whitelight; lower atomosphere in Calcium-K and upper atmosphere in H-Alpha



The following close-ups in the Sun's upper atmosphere are taken with a H-Alpha etalon fitted onto a Celestron 6" achromat:









Prominences on the limbs of the Sun:

[Dark Neptune]

Eh, how did you even managed to capture the 6th & 7th images!!!

Its as if like you were peering out through a window onboard a NASA spacecraft! 0_0

[cloud_cover]

Very nice!
Wow, you have a CaK filter? Are you using a Daystar Quark or similar for your HA Eatalon?

[yltansg]

Valdric - Picture 6 and 7 were taken with Gamma turned up higher to catch the prominence.

Here is another rendition of the prominence and the surface plasma fibrils



Cloud_Cover - Yes, the CAK image was taken with a Lunt 50mm CAK scope. The full disk H-Alpha images were taken with a Solarscope 50mm H-Alpha etalon (double stacked) on a Borg 76mm refractor. The close-ups were taken with a Solarscope 100mm H-Alpha single etalon on a Celestron 6" refractor.

[superiorstream]

Hi Alfred
Nice pic.Yes solar activities are low nowadays and even with the recent 150000km sunspot activities
were low.This will continue in the yrs to come.However expect a active spot to shot
up ....around 2017....before this cycle 24
ends.Thanks for sharing the nice photos

[yltansg]

Yes solar activities are low nowadays and even with the recent 150000km sunspot activities
were low.This will continue in the yrs to come.However expect a active spot to shot
up ....around 2017....before this cycle 24
ends.

Thanks Mr Chai for your compliments and comments.

I have the same opinion as you that there may be active spots even though the present solar maxima is coming to an end. I have also got myself ready for solar minima and will switch to high resolution imaging to get to the interesting fibrils. Besides increasing aperture to 150mm, I will also be putting an D-ERF upfront of the refractor and putting the H-Alpha etalon at the focuser end. Will post results when the equipment is ready. Will also be doing high resolution white light by putting a D-ERF on a 150mm refractor with a Herschel wedge at the focuser end.

Cheers.

Alfred

[Dark Neptune]

Yes solar activities are low nowadays and even with the recent 150000km sunspot activities
were low.This will continue in the yrs to come.However expect a active spot to shot
up ....around 2017....before this cycle 24
ends.

Thanks Mr Chai for your compliments and comments.

I have the same opinion as you that there may be active spots even though the present solar maxima is coming to an end. I have also got myself ready for solar minima and will switch to high resolution imaging to get to the interesting fibrils. Besides increasing aperture to 150mm, I will also be putting an D-ERF upfront of the refractor and putting the H-Alpha etalon at the focuser end. Will post results when the equipment is ready. Will also be doing high resolution white light by putting a D-ERF on a 150mm refractor with a Herschel wedge at the focuser end.

Cheers.

Alfred

Should still have several opportunities to snap some CMEs in the meantime!

[kochu]

Nice shots Alfred
Kochu 19/8/15

[rcj]

Fantastic imagery, Alfred!

[yltansg]

Thanks Kochu and Remus for your kind comments.

Alfred