Orion EON 80mm, Orion Atlas EQ-G. Orion SSAG. Celeston C6se Canon XSi, Celestron Neximage 5 IDAS 2" LPS-P2 filter. http://www.astrobin.com/users/whitenerj/ Texas Astronomical Society www.texasastro.org
Quote:It looks like aliasing from low resolution and/or resampling down at 8 bits in processing. The jagged edges are also visible on the crater rims if you zoom in. The Orion 80mm must be somewhere around 3 arcsec/pix with the QHY8L 7.8um pixels. That's not 'high' res but I should think it's enough to give better edges than that. If you converted to 8 bit jpeg before resizing that might do it.You're capturing in 16 bit fits, yes?
Money can't buy happiness, but it sure makes living with misery a lot easier!
Quote:A new shot or the same one reprocessed? In any case better, much less color noise as well. Still some aliasing but without seeing the raw fits it's hard to say whether it's just resolution or a processing artifact.