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once again thanks for your kind words,
paul time for another investment i think, you wont know how you lived without it once you have it.
ric and robert - its nice to do quick google on what you image , as universitys and individuals do all sorts of write ups , and it can be soooo interesting
Hagar, hagar, hagar..... you can never have enough aperture. however heres a tip for you. With your exposures if you want to go deeper apart from doing longer exposures try this. say you have 20 exposures, median stack in groups of 4 or 5 save as a tiff, the tiffs then stack as summed. You will find it easier to lift the image using curves and also not go too gritty on you. Once youve lifted it set the black point INDIVIDUALY ie red channel , blue channel etc ...... if your stars have lost a bit of colour because they are overbright you can use the colour range tool to copy and paste from one of the original tiffs. Try it and let me know how it goes.
cheers clive
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