From: "Alan Friedman" <alan@greatarrow.com>

Date: June 9, 2007 6:22:47 PM MDT

To: <Astro_IIDC@yahoogroups.com>

Subject: Re: [Astro_IIDC] Re: Jupiter crossing the meridian

Reply-To: <alan@greatarrow.com>

Jim, Phil - thanks for your comments!

---------- Original Message ----------------------------------

From: "jimchung2338" <jim_chung@sunshine.net>

Are you able to give up any secrets?   Is there a distinct advantage to creating a 

Luminance layer from the R+G instead of a straight RGB?

No real secrets - just a lot of grunt work on this. It helps to choose the right focal 

length - I used to much for this image (it's reduced in the final version) and had 

very grainy data to work with. It is a BIG advantage for image sharpness to make a 

luminance layer that excludes the horrible blue data. When I have a minute I will 

post some color breakouts that should help to show this.

best,

Alan