NGC - 7293 Helix Nebula
Image by Massimiliano Baravelli
Optics: 140 mm f/7 TEC 140APO Refractor
Guide: 105 mm f5,8 Astro-Physics Traveler Refractor
Mount: Astro-Physics GTO900
Camera: SBIG ST10XME
Guide: SBIG ST-402
Filter Wheel: SBIG CFW-10
Filters: AstroDon LRGB set + Ha-SII-OIII set
Dates/Times: 14/09/2007
Location: Medelana,Bologna
FWHM: 1.18
Exposure Details: LRGB = L: 270min Ha
Total Exposure Time: 270 min
Acquisition: MaxIm DL/CCD 4, TheSky6
Processing: MaximDL/CCD 4, Photoshop CS2