Archive for August, 2016

New active region – August30, 2016

Posted in ASTRO on August 30, 2016 by maxpho

A new very active region is coming into view today. It might give us some nice events like small flares, so it must be monitored.

Equipment: TS 115mm F/7 APO Refractor, Quark Chromosphere, Baader UV/IR cut filter, ASI 174MM camera. Seeing: 7/10.



To put things in perspective a bit, an image of today’s small eruption and Earth at the same scale:


A sequence depicting the rapid-changing phenomena around the new active region:

2585 evolution.jpg

And a short 68 frame animation presenting the activity of this region for a period of almost 50 minutes (09:33-10:22 U.T.):


And a “all-in-one” image, better showing the magnetic field lines detectable from the plasma moving along them:



Large prominences – August 28, 2016

Posted in ASTRO on August 29, 2016 by maxpho

Two very large prominences have appeared today on the Sun, and of course I had to “be there”.

TS 115mm F/7 APO Refractor, Baader UV/IR cut filter, Quark Chromosphere H-alpha filter, ASI 174MM camera.

0948ut aug 28 col2.jpg

0948ut aug 28 bw.jpg

And a short animation, showing some prom-dancing of these large prominences:

aug 28.gif

And a full disc image acquired with the TS 65mm F/6.5 APO, a few hours after the above image. This one was done while preparing together with a friend of mine, Claudiu, for an ISS solar transit. It would have been my first H-alpha ISS transit, but one cloud said “Not this time!”. So, I was left with a 12-image mosaic to process, for quite a long time. The end result is more towards an artistic view, since I’ve processed the image with an “inverse limb illumination”for a more…artistic view.


H-alpha Sun – August 27, 2016

Posted in ASTRO on August 28, 2016 by maxpho

Good activity these days on the Sun, despite lacking any great sunspot group or large prominence.

The following shots and animations were acquired under good seeing conditions on an imagingĀ  session together with my wife not far from home.

The equipment: TS 115mm F/7 APO Refractor, Quark chromosphere H-alpha filter, Baader UV/IR cut filter, ASI 174MM camera.

First, a wide two-panel view showing the Sun’s western limb with a lot of activity:


And a more detailed view of some of the prominences:

0941ut 27aug2016col.jpg

0941ut 27aug2016bw.jpg

Active region 2581 with some interesting detail:

ar2581 aug27.jpg

ar2581 aug27col.jpg

And two animations (a third much longer one is being processed) :

-the first one shows the prominences dancing over a 20 minute period:


-the second animation shows some changes inside AR2581 during a 10-minute period:

anim 1.gif


H-alpha Sun -August 26, 2016

Posted in ASTRO on August 27, 2016 by maxpho

A lovely prominence on the Sun today. The same from the previous post actually…

The prom has change a lot in appearance.

A short animation is also being processed.

For now, a panoramic view:

13 34 ut aug 26 col.jpg

13 34 ut aug 26 bw.jpg

And AR 2580 region:

AR2580 AUG 26.jpg




H-alpha images – August 25, 2016

Posted in ASTRO on August 25, 2016 by maxpho

A few shots from today, showing one very fast changing prominence and an interesting Active Region.

TS 115mm F/7 APO, Quark H-alpha chromosphere filter with UV/IR cut filter, ASI 174MM camera.

First, the 12 minute animation, acquired in changing seeing conditions:


And the non-moving shot:




H-alpha Sun – August 23, 2016

Posted in ASTRO on August 24, 2016 by maxpho

Again, some H-alpha shots. Mostly these were acquired as tests in an attempt to reduce the field uniformity due mostly to the camera used for the acquisition (at least I think this is the reason).

Equipment: TS 115mm F/7, Baader UV/IR cut filter, Quark Chromosphere, ASI 174MM camera.



16 14UT col.jpg

16 14UT.jpg

12 57ut.jpg



H-alpha Sun – August 22, 2016

Posted in ASTRO on August 22, 2016 by maxpho

Again, some activity on the Sun’s limb with a few large proms.

Equipment: TS 115mm F/7 APO Refractor, Quark Chromosphere H-alpha filter, Baader UV/IR cut filter, ASI 174MM camera. 700 out of 4000 frames. Seeing 5/10.

The colored version:


And grayscale:


UPDATE (August 23, 2016):

One more image pair showing the same region presented above but at a different angle:



And a small active region as seen from above:


And a three-frame animation showing soft evolution of the solar surface on a period of only 15 minutes: