NGC 6826 blinking planetary
| CCD: Exposure Time: Instrument: Focal Length: Corrector: Raw FWHM (Seeing): Image Processing: Sky Conditions: Who ? Problems: |
SBIG ST7 E 3x20s, not guided on 22.10.01 Pollux 0.8m azimutal mounted telescope 3557mm (=140 inch) f/4.44 3-lens Wynne corrector 1.52 arc seconds Deconvolution, unsharp mask Fog, visual magnitude 4.5, water dropping from the telescope, everything wet. Philipp Keller and Christian Fuchs The Wynne-Corrector was not correctly adjusted and caused some coma. This was removed with the deconvolution. Check on the M57 if you want to see how severe the coma gets if you assume a symmetrical gaussian blur in the deconvolution (like AIP for windows offers). |
It will be fantastic to do this image in color !