NGC 6888 Crescent Nebula
Bi-color technique
for high resolution click here
Soap bubble nebula
From Wikipedia, the free encyclopedia
The Soap bubble nebula, or PN G75.5+1.7, is a planetary nebula in the constellation Cygnus[1], near the Crescent Nebula (NGC 6888)[2]. It was discovered by amateur astronomer Dave Jurasevich using a 160 mm refractor telescope who imaged the nebula on June 19th 2007 and on July 6th 2008. [3] The nebula was later independently noted and reported to the International Astronomical Union by Keith. B. Quattrocchi and Mel Helm who imaged PN G75.5+1.7 on July 17th 2008[4]
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Telescope : William optics FLT 98 CF Camera : Starlight Xpress SXVR H35 Full frame Filters : H@ - OIII (H@ = Red , OIII = Blue , H@/OIII = sGreen) Mount : Vixen GP-DX Guiding : 70 mm Vixen guidingscope and Meade DSI 1 using PHD Exposure : 6 x 15 min subs H@ - OIII - SII (1 dark for BPM and 100 Biasframes) Processing : Nebulosity and PS , CS 2 Location : Wateren Date : 10-10-2010 Conditions : perfect for dutch skies but humidity around 80%
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A different processing result SII = RED , H@ = GREEN , OIII = BLUE
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