NGC7538 Emission Nebula from [SII], Halpha and [OIII]

Click image to enlarge, click here for highest resolution

 

Taken on Sept 1, 4 - 7 and 16, 2006 from my backyard in Castro Valley, California

To see in Halpha only click here:      

                                       Stinger 450 Classical Cassegrain (18" f/12.6)

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

Finger Lakes CM10 MaxCam imaging camera operated at -20C

Robofocus

Finger Lakes CFW1 Filter wheel

SBIG ST7E guide camera

Custom Scientific 3nm FWHM Ha filter (50mm diameter)

Custom Scientific 3nm FWHM [OIII] filter (50mm diameter)

Sixteen exposures of 30 minutes through Halpha filter

8 exposures of 30 minutes through [OIII] filter

Sixteen  exposures of 30 minutes through [SII] filter

Twenty hours total exposure time

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