astroimages
Darin E. Fields' Astrophotography Pages
 

M17: Diffuse Nebula in Sagittarius

Right Ascension 18 : 20.8 (h:m)
Declination -16 : 11 (deg:m)
Distance 5 (kly)
Visual Brightness 7.0 (mag)
Apparent Dimension 11.0 (arc min)
More information on M17

Exposure: A 56 minute LRGB exposure. L=20 minutes (10 x 120 sec, R=12 minutes (3 x 240 sec.), G=12 minutes (3 x 240 sec.), B==12 minutes (3 x 240 sec.)
Guiding: ST-4
Telescope: 8" Apogee Newtonian f/4
Camera: ST-237 cooled at -16c
Processing: CCDOPS, PhotoShop
Date:9/07/02
m17-lrgb-1:
Exposure: A 5 minute LRGB exposure. L=60, R=80, B=80, G=80
Guiding: ST-4
Telescope: 8" Apogee Newtonian f/4
Camera: ST-237 cooled at -20c
Processing: CCDOPS, PhotoShop
Date:7/14/01 taken at Cherry Springs, PA.
m17rgb:
Exposure: 300 second
Guiding: (10x30 sec. Track and Accumulate)
Telescope: 8" Apogee Newtonian f/4
Camera: ST-237 cooled at -20c
Processing: CCDOPS, PhotoShop
Date:6/25/01
m17-1: