Technical card
Sadr and IC1318 in HSO
Dates: 7. November 2021
Locations: Alvaneu/GR, Switzerland
- Camera: ZWO ASI2600MM Pro
- Mount: Skywatcher eqm35d
- Telescope: ASKAR FRA400 with .8 reducer (f.3.9)
- Filters: Optolong HSO (~7nm)
Exposure Details: Total integration time ~3hous, 30x180’’ H-Alpha, 15x180’’ Siii, 15x180’’ 0ii
Information from the author
This picture shows Sadr a star in the northern constellation of Cygnus and IC 1318, a diffuse emission nebula. The stars are located roughly 1,800 light-years from Earth and are unrelated to the surrounding nebula (much further away, at 4,900 light-years).
The picture was shot in Alvaneu/GR where the seeing conditions allow to capture faint nebula and was shot in HSO over 3hrs, which is relatively a short exposure time in astrophotography.