Sun in HAlpha With Lunt LS100THa Uploaded 8/21/17 Daily Report For Monday, August 21, 2017
Images below are 1400 wide and non clickable
Viewing the Sun during the monsoon is very optomistic. Most of the time it is clear in the morning hours however, and we lucked out for the eclipse this time. A few shots about 2 hours before the 9:13 start of the partial eclipse to show the very nice sunspot groups. Maximum eclipse was 10:35 or so and appears at the bottom of this image set. Seeing was bad at sunrise and got much worse during the eclipse. Thats why there are no close ups then.
Halpha:
Lets start with the full disk in Halpha. Two large groups appear on the Sun!
This second image overexposes the disk, and turns up the Gamma to not blow out the proms. There is a very nice arch prom on the limb!
Next, we put in the 3x Klee barlow. Seeing was only 1.5/5 at this point, however by stacking 25 frames out of 1200 I did get a decent image. First here is the big group in the center of the Sun in Black and White. Greyscale images show much more detail than colorized versions.
Colorizing the disk looks nice at first, but you do loose a lot of detail:
Here is the sunspot coming on to the eastern limb, looks pretty good at this point!
Now colorized:
And a close up of the huge arch prom is in order. Remember that proms are very faint compared to the disk and so we have to block off the overexposed disk as to make the image viewable. this is NOT during the eclipse yet...
The Eclipse images. We had a 70% eclipse here in Payson. Two images are shown at maximum eclipse, a full disk and then the proms.
And the prom shot.
