Sun through Coronado H-alpha filters
Updated : 17 March 2005.
Click on image to get larger size image.
- CCD : STL11000M ABG 1x1 binning
- Exposure time : 0.06 s
- Date and Time : 17. Mar. 2005, 14:15 UT
- Instrument : FSQ @ f/35 (SM60)
- Focal length : ca. 2100 mm (2x Powermate + 1.6 Antares Barlow)
- FWHM : about 0.05 nm (double stacked H-alpha filters)
- Filters : Astronomik clear filter, 90mm and 60mm H-alpha filter
- Image processing : MAxim V4.06 and Registax V3 (wavelets and stacking of 14 dithered images)
- Problems/comments : Further processing in Photoshop (levels, colorized).
Imaged at my backyard, Mol, Belgium.