A good comet image processing (composite) tutorial?

[Vega]

Hi All

Does anyone know of a good tutorial for processing 2 stacked images of a comet (one stacked on stars, the other stacked on the comet's nucleus)? I know DSS has a feature but is there a better method in Photoshop?

I've got two nice images of comet 41p / M97 / M108 last night and not sure where to start with getting a composite so the background stars aren't streaked.

Any help greatly appreciated.

Enjoy the clear skies!

[happy-kat]

What image processing software do you have available to use?

There is a thread on comet lovejoy where the member outlined how they did their composite image.

[Vega]

I have imagesplus but (an old version, 3.82) and Photoshop cs5.

ill try to find the love jovejoy thread...

[happy-kat]

Something along the lines of extracting the stars from one and removing from the comet then adding the extracted stars. So I guess it will be as easy as the mask tool is competent. Don't forget GIMP you could try that too.