IC434 / Barnard 33 Horsehead Nebula in Halpha and [SII] from Stinger 450 Classical Cassegrain FLI CM10 and Baader Planetarium Filters

click image to enlarge, click here for highest resolution

taken on January 19 and 28, 2008 from my backyard in Castro Valley, Ca

Stinger 450 Classical Cassegrain (18" f/12.6)  

Lumicon Giant Easy Guider with Focal reducer for final: F= 3366mm, f/7.1

(binned 2x2, image scale = 0.84 arc-sec/pixel at capture)

Finger Lakes CM10 MaxCam imaging camera operated at -25C

Robofocus

Finger Lakes CFW1 Filter wheel

SBIG ST7E guide camera

Baader Planetarium Ha filter (50.8 mm diameter)

Baader Planetarium [SII] filter (50.8mm diameter)

12 exposures of 10 minutes through Halpha filter

22 exposures of 10 minutes through [SII] filter

5 hours 40 minutes total exposure time

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