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Re: APOD: Black Sun and Inverted Starfield (2012 Oct 15)

Posted: Mon Oct 15, 2012 10:40 pm
by Anthony Barreiro
JimLafferty wrote:@Anthony>>>>the image was taken on September 26, 2012.

Regards!

Jim

Jim Lafferty
Redland, California 92374
http://scopetrader.com/jimlafferty
Thanks Jim!

Re: APOD: Black Sun and Inverted Starfield (2012 Oct 15)

Posted: Mon Oct 15, 2012 11:30 pm
by starbridge
The black sun looks to me like a micrograph of a white blood cell.

Re: APOD: Black Sun and Inverted Starfield (2012 Oct 15)

Posted: Mon Oct 15, 2012 11:59 pm
by Boomer12k
An Ocean of Flames.... 8-)


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Re: APOD: Black Sun and Inverted Starfield (2012 Oct 15)

Posted: Tue Oct 16, 2012 12:14 am
by saturno2
The Sun?
Strange image :?

Re: APOD: Black Sun and Inverted Starfield (2012 Oct 15)

Posted: Tue Oct 16, 2012 12:17 am
by Ann
Thanks for commenting - twice - on your fascinating-looking image, Jim.

Ann

Re: APOD: Black Sun and Inverted Starfield (2012 Oct 15)

Posted: Tue Oct 16, 2012 3:21 am
by AustiMN
It reminds me of a spongy old mushroom, seen from the top down.

Re: APOD: Black Sun and Inverted Starfield (2012 Oct 15)

Posted: Tue Oct 16, 2012 4:08 am
by neufer
AustiMN wrote:
It reminds me of a spongy old mushroom, seen from the top down.
Click to play embedded YouTube video.

Re: APOD: Black Sun and Inverted Starfield (2012 Oct 15)

Posted: Wed Oct 17, 2012 3:00 pm
by RickM
A detailed solar view was captured originally in a very specific color of red light, then rendered in black and white, and then color inverted. Once complete, the resulting image was added to a starfield, then also color inverted.
if you color invert a black and white picture, don't you still have a black and white picture? How then does the sun's image get its bluish cast?

Re: APOD: Black Sun and Inverted Starfield (2012 Oct 15)

Posted: Wed Oct 17, 2012 3:29 pm
by Chris Peterson
RickM wrote:
A detailed solar view was captured originally in a very specific color of red light, then rendered in black and white, and then color inverted. Once complete, the resulting image was added to a starfield, then also color inverted.
if you color invert a black and white picture, don't you still have a black and white picture? How then does the sun's image get its bluish cast?
The original description is a bit off. Actually, the source image should be described as monochromatic: there is only a single value (intensity) associated with each pixel. This is how the image was collected, not rendered. The result of this sort of imaging is a grayscale image. However, such images are often rendered in color, using some sort of mapping between intensity and color, since this can let us see more detail, and also can provide a more aesthetically pleasing image. That appears to have been done here.

Re: APOD: Black Sun and Inverted Starfield (2012 Oct 15)

Posted: Thu Oct 18, 2012 3:37 am
by JimLafferty
The stacked monochrome image was inverted and then colored.--thanks.

Jim
Jim Lafferty
Redlands, Ca