astroimages
Darin E. Fields' Astrophotography Pages
 

NGC 3521: Spiral Galaxy in Leo

Right Ascension: 11 : 05.8 (hours : minutes)
Declination: -00 : 02 (degrees : minutes)
Apparent Magnitude: 8.9
Apparent Diameter: 9.5 (arc minutes)
More information on NGC 3521

Exposure: 55 minute LRGB: L=30 min. R=10 min (5 x 120 sec.), G=10 min. (5 x 120 sec.), B= 15 min. (5 x 180 sec.)
Camera: ST-237 cooled @ -25C
Guiding: ST-4 on ST-80 @ f/10
Telescope: 8" f/4 Newtonian
Mount: Losmandy G-11
Processing: Maxim/DL, Photoshop 6.0
Date:04-10-02
ngc3521-lrgb-1: