HaLRGB Question : How to.

[Catanonia]

Just got my Ha filter and was wondering if anyone could give me a

a. CS3 workplan

or

b. MaximDL 5 workplan

on how to combine the Ha frames to the LRGB image without ending up with pink colours.

I bookmarked a post about layering in the Ha gradually to avoid issues, but didn't quite understand it.

Can anyone give me a step by step idiots guide. I am versed with CS3 and MaximDL

Thanks

[Psychobilly]

Cat,

Have you looked at the methods Robert Gendler uses...

Untitled Document

Peter...

[MikeD]

I mix the raw red and Ha 50/50 with layers add the Green and Blue and process as a RGB image and then sometimes add another Ha layer "set to lighten" and stretched with curves to the new red channel from the resulting RGB image.

Hope that makes sense,

Mike

[ollypenrice]

I tend to add the Ha to red in Photoshop using blend mode Lighten. I sometimes see what happens if use a partial addition to red using blend mode Normal as well, so pretty sililar to Mike' s method, I'd say.

However, I do think a very low application as luminance can be worth having sometimes. It helps pick up faint structure in nebulae and faint background sky features. I keep it low - ten percent-ish - to avoid the pink-out with blue star haloes.

Peter, thanks for the Gendler link. I'll take a look.

Olly

[martin_h]

Any use? >>> Starizona's Guide to CCD Imaging

[Catanonia]

Thanks guys, will have a gander through all these methods