Sun in Hydrogen Alpha / CaK /White Light With Coronado 40 / Lunt 60mm CaK Uploaded 10/23/11
 Here is a summary of this last weekends highlights.
Click on Images for a larger 1024 x 768 view

White light band, Full Disk. This was the first attempt to shoot the new Lunt CaK scope without the calcium filter, and try using a new Baader Astrosolar safety film front filter. This did not work too well, the objective lens works fine on the narrow band calcium, but had bad chromatic abberation on the white light, and was poor at resolution and crispness. But its my first full disk shot in years! So this image is a 4x prime focus assembled in iMerge taken on 10/15

This image was taken the next day and is colorized less for a natural look, since the sun is pure white by definition anyway. Same setup.

Next, i tried the ETX was tried with much better results! This very well corrected system has proven itself to be diffraction limited for a 90mm aperture on doubles at night. This 1250mm f/12.5 system was used with the DMK camera and an OIII filter to increase contrast and greatly improve the seeing. AR1314 at top and the extremely active AR1319 which was constantly flaring in halpha and CaK. This is my first image ever to show granulation in the background!

Just south is AR1316 and AR1317. While not particularly active, the group had some complex umbras.

Calcium K image with the Lunt 60mm. This full disk shot was made from 4 parts to avoid the edge vignetting, and shows tremendous faculae (white clouds) details in the Photospheric Faculae especially around AR1314.

Three part montage with the 2x coronado barlow. The second spot group down AR1319 is tremendously active, despite its weak appearance here.

Three part Hydrogen Alpha mosiac with the Coronado 40mm. The Big Three sunspots can be seen here, and AR1319 can be seen mildly flaring here in the center.

Finally, on the limb we find the solitary sunspot AR1312, and a very nice tree shaped prominence. Im still experimenting with color schemes here, You cannot colorize the sun too much or the bright details will simply dissapear!

Instrument: Coronado 40mm Halpha or Lunt 60mm CaK Platform: Astrophysics 1200 Camera: DMK 3U (1024x768) Location: Payson, Arizona Elevation: 5150 ft. Sky: Seeing 7/10, Transparency 10/10 Outside Temperature: 75F Processing: Registax 6, Photoshop CS2 Solar Home Page HOME SCHMIDT GALAXIES EMISSION NEBS REFLECTION NEBS COMETS GLOBULARS OPEN CLUST PLANETARIES LINKS