Forum member phani_astronomy
has been illustrating the use of image stacking for lunar photography in his thread My First decent pics
. Rather than drag that thread off in a direction not intended I thought it might be useful to create this one to partner it.
So what is "Lucky Imaging"? Nope, it's not Kylie knocking unexpectedly at the door, saying that she admires your work and asking to have her photograph taken.
Spot the difference! The images are from Amateur Lucky Imaging
and, to précis their description, the first image is what we see through a telescope and is a clip from a longer video sequence which was processed by the free software Registax v4
. The images in that sequence were processed and analysed for different sharpness criteria with the best ones being selected, shifted and added to give the final image.
Impressive stuff and with the new generation of HD video enabled DSLRs appearing the technique should become even more accessible as there are standard adaptors available for attaching DSLRs to the observing end of telescopes. Unfortunately the downside is that, without very specialised detectors of the sort not found in DSLRs, the technique is only applicable to bright objects such as the Moon or the planets.