NGC7635, SH2-157, MRK50, M52, NGC7538 area in Halpha

Click image for medium resolution, click here for larger, for highest resolution, click here

To see this as a tricolor narrowband emission line filtered image click here

Taken on  September 11, 2004 from my backyard in Castro Valley, California

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

Finger Lakes IMG6303E imaging camera at -35C

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 

4 exposures of 20 minutes through  Halpha filter

1 hour 20 minutes total exposure time

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