M17 Widefield in Halpha from AP155EDF and FLI Proline PL39KM with FLI Research Grade Halpha Filter

click image to enlarge, click here for higher resolution

or 6MP resolution click here

for 11MP resolution click here

for 17MP resolution click here

for full resolution (7024 x 5168, ~34.6Mpixels) click here

taken on April 16 and 17, 2010 from my ranch in Mariposa County, California 

AP155EDF f/7 imaging scope used with AP 4" Field flattener

Finger Lakes CFW 4-5 filter wheel 

Finger Lakes Research Grade Halpha filter (50 x 50 mm) 

Finger Lakes Proline 39M monochrome camera


AP 80/900 mm guide scope

SBIG ST7ME guide camera

AP1200GTO mount

14 x 15 minutes no filter

3.5 hours total exposure time

Hit Counter