vdB142 in [SII], Halpha and [OIII] from AP180EDT f/9 and FLI ML4022 with Baader Halpha and FLI [SII] and [OIII] filters

click image to enlarge, click here for highest resolution

Taken on September 26 from my backyard in Castro Valley, California and September  27, 2008 from my ranch near Mariposa, California

Astro-Physics AP180EDT f/9 used with field flattener

Finger LakesMicroline ML4022 imaging camera operated at -30C


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)

12 exposures of 10 minutes through Halpha filter

20 exposures of 10 minutes through Sulfur filter

28 exposures of 10 minutes through Oxygen filter

Ten hours total exposure time


Interesting objects noted, click for higher resolution

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