Cygnus "Bubble" in Halpha from Stinger 450 f/12.6 Classical Cassegrain, FLI Proline 9000 and Baader Planetarium 50 x 50 mm Halpha filter

click image to enlarge, click here for high resolution. For maximum resolution click here

Taken on September 5, 2008 from my backyard in Castro Valley, California


Stinger 450 Classical Cassegrain (18" f/12.6)  

Lumicon Giant Easy Guider without Focal reducer for final: F= 5760mm, f/12.6

Finger Lakes Proline PL9000 imaging camera operated at -35C


Finger Lakes CFW4-5 Filter wheel

SBIG ST7E guide camera

Baader Planetarium 7nm  FWHM Ha filter (50 x 50 mm squarer)

Custom Scientific 4.5nm FWHM [OIII] filter (50mm diameter)

10 exposures of 20 minutes through Halpha filter

Three hours 20 minutes total exposure time


here's an older shot from 2004 that contains it:

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