M20 (Trifid nebula) and M21 open cluster
in Sagittarius
Éder Iván
Below you find a crop in 50% size.
Image details
- Instrument:
- TMB 130/780 apo refractor with field flattener
- Camera:
- Home-modified Canon EOS 350D
- Mount:
- SkyWatcher EQ6 + Boxdörfer DynoStar
- Guiding:
- 72/500 refractor, SBIG St-4
- Exposure time, filters:
- 21x5min at ISO800
- Location, date:
- Ágasvár (Mount Matra), Hungary; 2007.07.14.
- Observing conditions:
- Transparency: 7/10, Seeing: 5/10, Temperature: +17°C
- Processing:
- Iris, Registar, Photoshop
