Planetary nebula NGC 7293 (Helix) - 19 August 2010
| Optics: | Newton 36cm + Paracorr + Baader UHC-S filter |
|---|---|
| Focal: | 1725mm (1500mm*1,15 due to comacorrector) |
| Aperature: | 4.8 |
| Exposure: | 20x8 min |
| Date & time: | 18 August 2010 from 23:05 UTC |
| Location: | Central Europe, Slovakia, Cadca, village Zakopcie |
| Atmosphere: | clear sky |
| Pointation: | own autopointer + webcam Logitech Pro 4000 |
| Software: | ImagesPlus + Photoshop |
| ISO/ASA: | 1600 |
| Camera: | modified Canon 350D |