From: Alan Friedman <alan@greatarrow.com>

Date: June 19, 2006 9:23:55 AM MDT

To: Astro_IIDC@yahoogroups.com

Subject: Re: [Astro_IIDC] Jupiter June 15

Phil -

Excellent!

Are you using an unfiltered image for luminance?

Alan

On Jun 17, 2006, at 2:16 AM, Phil Houston wrote:

Here's another Jupiter image, this one showing Ganymede's shadow and

Io off tho the right of the planet. Imaging information follows.

Time - 10;06 PM EDT - June 15, 2006

Location - St. Petersburg, FL

Seeing - 8/10

Temperature - 81 F

Winds calm

Telescope - OTI Quantum 6, 2X Barlow, operating at F/42 ( roughly 6

meters) producing an image diameter of 283 pixels for 42.3" arc

planet . (.149 arc sec./pixel)

Camera - DMK 31AF03 - monochrome CCD

Luminance Frame

Stack of 458/1019

Gamma: 1.30

Brightness: 756

Black Point: 0

Exposure: 66.67 ms

RGB Frames

Stack of 100/200

Gamma: 1.30

Brightness: 818

Black Point: 0

Exposure: 133.33 ms

Image processing:

Astro IIDC - Planetary, No fine alignment, 2X resampled

Photoshop - Levels, Unsharp mask, Gaussian blur, RGB image was

produced, adjusted, and layered on the luminance image, final image

size was reduced.

http://www.knology.net/~pkh111/astrophotos/Q6jupiter.html

Next time I will try Milton's and Alan's imaging and processing

suggestions.

Phil

__._,_.___

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