M57, Ring Nebula (NGC6720)
M57 is the result of the final stage in the life of a Sun-like star. When the star exhausted its nuclear fuel, it expelled its outer layers to form this nebula, while the core was reduced to a white dwarf.
General information
- Constellation
- Lyra
- Category
- Nebulae
- Date
- 24 October 2021
Capture
- Total time
- 1h 15 min
- Subframes
- 300s (L: 15x) ISO 1600
- Gain / Offset
- 0 / 0
- Calibration
- 15 dark frames, 50 flat frames and 60 bias frames
Equipment
- Telescope
- TS102 f/5.6
- Camera
- modified Nikon D90
- Filters
- UV/IR
- Mount
- HEQ-5 Pro belt drive
- Guiding
- Guide scope 60mm f/4 + ASI224MC with PHD2
Processing and environment
- Processing
- Stacked with DSS, post-processed with StarTools, labelled with Ps
- Location
- l'Ampolla, Tarragona
- Sky
- Bortle 4