Lynds Group 11 including Sharpless 2 -157 (Sh2-157) in Halpha Light

Click on image to enlarge, click here for highest resolution

Taken on  September  23, 2004 from my backyard in Castro Valley, California

Takahashi FSQ106  f/5 (F=530mm) imaging scope

SBIG ST10XME imaging camera at -26C

AP80/900MM guide scope

SBIG ST7E guide camera at -15C

Finger Lakes CFW1 filter wheel

AP900GTO mount

Finger Lakes DF2 Focuser

Custom Scientific 50mm Narrowband Emission Line filters (AR Coated)        

   Hydrogen alpha        656.3nm  3nm FWHM

9 exposures of 30 minutes through  Halpha filter

4.5 hours total exposure time

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