M20 Trifid Nebula Widefield in Halpha

click image to enlarge, click here for highest resolution

For a color image of this area click here

Taken on July 1, 2005 from Fremont Peak State Park in San Juan Bautista, Ca.

AP180EDT f/9 imaging scope used at f/6.75

AP 0.75x Telecompressor

FLI IMG6303E imaging camera @ -30C

AP80/900mm guidescope

SBIG ST7E guide camera

FLI CFW7 color filter wheel

3nm FWHM Custom Scientific Ha 50mm AR-Coated filter

6 exposures of 15 minutes through Ha filter

1.5 hours total exposure time

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