From: albe albo <richter1956@yahoo.com>

Date: August 29, 2009 3:30:10 PM MDT

To: Astro_IIDC@yahoogroups.com

Subject: Re: [Astro_IIDC] Re: New file uploaded to Astro_IIDC - false colors

Ok Milton you are right.

perhaps i felt a little guilty because the Jupiter chroma is a "still"  image defocused, not an animated chroma.

The chroma of the 2 moons has been made with a solid color overlapped with "color" ink.

I'm enough skilled using After Effects and Shake (the smooth animation and the alignment has been made with those SW) so i applied two animated solid colors to the moons.

In order to less the flickering i used a WideTime filter too.

Anyway this Jupiter session had a lot of problems.

Consider that after the first 34 frames i had to swap 180° the axis of my german mount so that the animation rotated 180,7° (difefrential torks?).

In addition my scope didn't work at full aperture because i have my mansard roof exactly cluttering at 30° altitude so i worked with 75% aperture and Jupiter light path passed  above the whole wide surface of my roof that is inclined 30°!

Before grabbing i attempted to refresh the roof with some water.

At the end of the animation Jupiter was 17° fading and disappearing.

I had to make a script for equalizing all the brightess based on the first frame and even the sharpening is differentiated because of the seeing worsening.

Very strange thing: after i swapped the axis i wasn't able to achieve the same quality/brightness  than before perhaps due to the fact that i had still more roof cluttering the scope.

The only huge luck was to re-center  jupiter  on my DMK with 5 meters focal without the finder! After the swapping the finder was too low under the roof so it didn't "see" jupiter.

I aimed looking very closely to the dovetail bar trying to aim Jupiter then i moved manually the scope until i got it!

Very very lucky otherwise i could have lost hours without recentering it.

It was the first time i used AIIDC for massive batch processing and i found some problems including many unexpected quits.

When I'll  have some time i'll do further tests and I  will try to explain you by mail.

TTYL

Da: milton_aupperle <milton@outcastsoft.com>

A: Astro_IIDC@yahoogroups.com

Inviato: Sabato 29 agosto 2009, 23:01:33

Oggetto: [Astro_IIDC] Re: New file uploaded to Astro_IIDC - false colors

Hi Alberto;

Thanks for the clarification on what "Not True Color" means.

I don't think it really matters what you call it, and I am not even sure it's necessary to mention it. Had that phrase not been embedded the movie, I would never have asked about it :)

When I shoot LRGB images like my M52, I'm basically doing the same thing, I'm colorizing the Luma image with R, G, B frames.

TTYL..

Milton Aupperle

--- In Astro_IIDC@yahoogro ups.com, albe albo <richter1956@ ...> wrote:
>
> Thank you Alan and Milton.
>
> True...the color are not ..true.
> Since the focus of the animation was the eclipse and not the planet/moons themselves I added the colors in post production only for presentation purposes.
> The whole animation is BW (infrared) but i added a defocused color jupiter map over the planet applying the "color" ink (photoshop like).
> The same way on the 2 moons i added "their" color in order to distinguish them.
> I noticed that it is a normal procedure for the Sun.
> Question: If this "artistic" manipulation could be misinterpreted should i explain it better or should i skip it?
> I liked the idea to add a touch of color to that grey world...
> Sorry for the inconvenience but i thought that mentioning "color not true" was enough.
> Should I write "colorized"?
> Suggestions are well accepted.
>
> Alberto
>

start: 0000-00-00 end: 0000-00-00