David Cortner . com
Photography, etc.
|
|
|
Messier 31
Astro-Physics 5-inch F6 @ F4.7
Losmandy G11 unguided
62, 1-minute exposures
Canon 50D, ISO 1600, RAW
No flats, no darks.
Flats would help. And focus could be better. (See
next effort here.)
Typical FWHM point spread: 5 pixels at 1.7 arcseconds per pixel (pretty
soft).
Auto-aligned and stacked using entropy-weighted averaging in DeepSky Stacker
v3.2.2
Cropped, histogram-stretched, and resampled for display in Photoshop CS4. Note
that
the
8-bit JPEG
above represents <5% of the data in the finished 16-bit,
4770x3177 image.
November 19, 2008, Connellys Springs, North Carolina