Sun in Hydrogen Alpha / CaK

With Coronado 40 / Lunt 60mm CaK

Uploaded 9/4/11

 Here is a comparison of Calcium K light to Hydrogen Alpha light taken on Sunday morning. The clouds were persistent until about 10am, and then the seeing went bad. I still got in these images, and you can see the 40mm is out resolved even in bad seeing by the 60mm Lunt. This was true despite the fact that in red light the seeing is always better than in UV or blue. CaK sits right at the blue/violet range, thus they are powder blue here. Hydrogen alpha is a very deep red, almost near IR, and is colored orange/red in these images.

With Lunt CaK Prime Focus

Click on image for a larger view: Full disk view of the sun showing half a dozen large active regions. At this wavelength, spots are still dark as usual, but are surrounded by faculae and bright points and small bright islands You are looking at a level between the photosphere and corona.
With Lunt CaK - 2x Coronado Barlow With Coronado 40mm - 3x Klee Barlow Here we are looking at AR1281 heading for the edge of the disk

Monster spot group AR1283 coming on to the center of the disk

AR1277 and friends turning off the disk. VERY active - Flared today.

AR1287 is just coming on and promises a good show

With Lunt CaK - 3x Coronado Barlow

Left: AR1283 is a massive group, this is my first attempt at using the 3x Barlow in very poor seeing. Despite this I think the resolution is decent.
With Coronado 40mm - 3x Klee Barlow

Not seen in the CaK image, this filament is located on the upper left oncoming edge and is only visible in Halpha. When viewed on the edge of the sun, this would be a large prominence.

Instrument: Coronado 40mm Ha or Lunt 60mm CaK Platform: Astrophysics 1200 Camera: DMK 1024 Location: Payson, Arizona Elevation: 5150 ft. Sky: Seeing 4/10, Transparency 6/10 Outside Temperature: 85F Processing: Registax 6, Photoshop CS2 HOME SCHMIDT GALAXIES EMISSION NEBS REFLECTION NEBS COMETS GLOBULARS OPEN CLUST PLANETARIES LINKS