MrEd Posted October 19, 2007 Share Posted October 19, 2007 Hi AllThis is my first Clear Mars this season.Seeing was great.Captured @ f40 with an 8" SCT and a Mono Toucam.The image is a colour combination of R IR G B as this gave the best balance.Still having trouble with the Limb. Can anyone suggest a way to improve the Limbartifact before opposition?RegardsEd Link to comment Share on other sites More sharing options...
Astroman Posted October 19, 2007 Share Posted October 19, 2007 Looks like an alignment issue to me. More than that, I can't say. Link to comment Share on other sites More sharing options...
barkis Posted October 19, 2007 Share Posted October 19, 2007 It don't look too bad ED. You will sort it before the big O, I 'm sure. Ron. Link to comment Share on other sites More sharing options...
legion48 Posted October 19, 2007 Share Posted October 19, 2007 I think that's a great Mars. Link to comment Share on other sites More sharing options...
beamish Posted October 19, 2007 Share Posted October 19, 2007 I agree with Legion. I'm sorry if this sounds like a daft question -but what exactly do you refer to when you speak of the "limb artifact" ?Karlo Link to comment Share on other sites More sharing options...
Trevor Posted October 20, 2007 Share Posted October 20, 2007 Great shot Ed as usual. Could the artefact be due to which way round the channels are stacked? Link to comment Share on other sites More sharing options...
MrEd Posted October 20, 2007 Author Share Posted October 20, 2007 OK sorry every oneHeres what i mean.......Before Mars comes to Opposition and is ina gibbous type phase,webcam imagers tendto get a harsh sharpening effect along the limb.It is nearly always there and dissapears at around opposition time.I think it has something to so with Phase,Atmospheric conditions and processing but many armatures seem to pick it up.Only some of the pros seem to be able to reduce-Eliminate it. (hence my question)I hope that helps.regardsEd Link to comment Share on other sites More sharing options...
beamish Posted October 20, 2007 Share Posted October 20, 2007 I can't help you with that Ed but thanks for explaining.Karlo Link to comment Share on other sites More sharing options...
Nick Smith Posted October 20, 2007 Share Posted October 20, 2007 Very nice capture Ed!The limb artifact! Everyone gets it, specifically in the red channel and its a [removed word] to get rid of. Personally, I use the healing brush tool in Photoshop, but I'm sure there must be a better way.RegardsNick Link to comment Share on other sites More sharing options...
mik Posted October 20, 2007 Share Posted October 20, 2007 Great image nice contrast well done.Mick. Link to comment Share on other sites More sharing options...
Cloudgazer Posted October 21, 2007 Share Posted October 21, 2007 Nice Mars Pic Ed..Scott Link to comment Share on other sites More sharing options...
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