Pickering's Triangle in Hydrogen Alpha

Started by Rob Mackie, 07/13/2007 11:11PM

Posted 07/13/2007 11:11PM Opening Post

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Join Date: Aug 2001

Location: El Cerrito CA, US

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See http://www.pbase.com/steelnavy/image/82172310

full size at http://www.pbase.com/steelnavy/image/82172310/original

I imaged this portion of the Veil Nebula using a 4.5nm
HA filter. 195 minutes total in 15 minute sub exposures.
Applied digital development in Maxim, then levels and curves
in Photoshop. Best FWHM readings at start of session were 1.9
Occasional thin scattered clouds wandered by, otherwise clear.

CCD temp -17C. Image was dark subtracted but no flats used.
SBIG ST-10XE CCD Camera,AP 130 @ F/4.5,SBIG STV Guider

Rob Mackie

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Posted 07/15/2007 04:36AM #1

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Join Date: Jan 2003

Location: San Diego CA, US

Posts: 1418

Rob,
Cool image of the triangle. Looks like the conditions didn't present too much of a problem.

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Jim Thommes

Mak-Newt 152 mm
C8
Megrez II APO
Zenithstar 66 mm APO
G11/Gemini
ST8300M
Artemis285 Camera
Canon 350D DSLR

http://jthommes.com/Astro/

Posted 07/16/2007 12:35PM #2

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Join Date: Dec 2002

Location: West Chester OH, US

Posts: 1118

Rob,

You captured some great detail there! Great job!

Eric

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Posted 07/16/2007 03:07PM #3

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Join Date: May 2003

Location: Tremonton UT, US

Posts: 2755

Nice one Rob!

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"The expression of the beautiful is in direct ratio to the power of perception acquired by the artist." (Gustave Courbet)

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Pickering's Triangle in Hydrogen Alpha

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