Huh. I had imagined that you would locate the target or target region, set the camera, fire a series of shots, and then stack away. From your comments it seems that you need to re-target the target for each shot. I know the stars are "moving" relative to us, but I hadn't thought they would move that significantly in 6-8 minutes . . .
stan On Oct 15, 2013, at 9:24 PM, Darren Addy wrote: > Thanks to all who have looked (and/or commented). The image is a crop > of what I got from doing an "overlap" stack in DSS. It is difficult to > frame each sub-exposure exactly the same (particularly when simply > using a ballhead), but with DSS that doesn't matter because it will > stack only the common parts of each image. From that result I cropped > in even closer resulting in the "centered" composition that Stan > didn't care for. I could have left more stars on the right and bottom, > but I guess my thinking was more like what Paul expressed earlier. > Also, the nature of astrophotography, particular with the lens near > wide open, is that the edges will drop in quality due to coma, CA, > etc. I didn't really have M31 centered well in any of the shots. It > was mostly left-of-center or lower left. So again, lots of room for > improvement with future images - even of the same subject. It is a > learning experience and I have a LOT left to learn. > > I don't see the banner either, but I'm also a paid account (if that > makes a difference). Rather annoying to hear about, though. : \ > > By the way, I had a couple of astro imagers suggest a free PhotoShop > plugin called HLVG (HastaLaVistaGreen) which I think I will > find/download and try on this image. I thought I got the green out, > but apparently not enough. > > To Larry's earlier question... not sure about stacking software for > the Mac. I believe Steve Sharpe mentioned one up-thread. > DeepSkyStacker and Registax are the two biggies (both free, I believe) > on Windows. If anyone is interested, I can share a good link that > helped me with the histogram/curve part of DSS. > > On Tue, Oct 15, 2013 at 8:07 PM, Larry Colen <[email protected]> wrote: >> On Tue, Oct 15, 2013 at 08:38:04PM -0400, Paul Stenquist wrote: >>> As I said, a fabulous shot. But what's with Flickr putting a banner in the >>> corner of your frame, covering part of the image -- "Try our New Photo >>> Experience." And people complain about ads on photo.net?? Bizarre. >> >> I don't see that baner. But then, I have a paid account. >> >> -- >> Larry Colen [email protected] http://red4est.com/lrc >> >> >> -- >> PDML Pentax-Discuss Mail List >> [email protected] >> http://pdml.net/mailman/listinfo/pdml_pdml.net >> to UNSUBSCRIBE from the PDML, please visit the link directly above and >> follow the directions. > > > > -- > Nothing is sure but death and Pentaxes. > > -- > PDML Pentax-Discuss Mail List > [email protected] > http://pdml.net/mailman/listinfo/pdml_pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly above and follow > the directions. -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
