von Tom
20-06-2012, 11:34 PM
One of the few times I point the Canon EOS 600D at prime focus of the 12" SkyWatcher Goto Dobsonian at deep sky objects here in suburban Brisbane :)
The M20 image is made up of 17x13 second exposures, ISO 6400. Stacked in Registax 5 and then masking applied in StarTools to isolate the nebula then layer it back in as a smoother image.
The M4 image was 10x13sec exposures at ISO 6400. Whilst it doesn't show alot of stars, the colours have come out nicely, I think.
The exposures were so short to avoid tracking errors and minimise field rotation, given the stacking method used.
One of the original frames is provided for comparison.
Thanks for having a look :)
Tom
The M20 image is made up of 17x13 second exposures, ISO 6400. Stacked in Registax 5 and then masking applied in StarTools to isolate the nebula then layer it back in as a smoother image.
The M4 image was 10x13sec exposures at ISO 6400. Whilst it doesn't show alot of stars, the colours have come out nicely, I think.
The exposures were so short to avoid tracking errors and minimise field rotation, given the stacking method used.
One of the original frames is provided for comparison.
Thanks for having a look :)
Tom