Sh2-101 – Tulip Nebula
Sh2-101, known as the Tulip Nebula, is an emission nebula located in the constellation Cygnus. It has an apparent angular size of 16 × 9 arcminutes, equivalent to a physical diameter of approximately 11 light-years, and lies about 2,300 light-years from the Solar System. To the right of the nebula, within the same apparent field but physically unrelated to Sh2-101, lies Cygnus X-1. This binary system consists of the blue supergiant HDE 226868, catalogued as HIP 98298, and a stellar-mass black hole of approximately 21 solar masses. Cygnus X-1 was detected as an X-ray source in 1964 and became the first object widely identified as containing a black hole.
General information
- Constellation
- Cygnus
- Category
- Nebulae
- Date
- 4 August 2024
Capture
- Total time
- HOO: 3h 12min; SHO: 4h 36min
- Subframes
- Session on 03/08/2024: 360s (Ha: 7x, OIII: 5x, SII: 5x) bin1; session on 04/08/2024: 360s (Ha: 10x, OIII: 10x, SII: 9x) bin1
- Gain / Offset
- 125 / 30
- Calibration
- 30 dark frames, 30 flat frames and 30 dark-flat frames, without bias frames
Equipment
- Telescope
- TS102 f/5.6
- Camera
- ZWO ASI294MM at -10 °C
- Filters
- Ha, OIII and SII Astronomik
- Mount
- Sky-Watcher HEQ5 Pro with belt drive
- Guiding
- Guide scope 60 mm f/4 + ASI224MC
- Focuser
- Not specified
- Filter wheel
- Not specified
Processing and environment
- Processing
- Stacked and post-processed with PixInsight 1.8.9-3 Ripley
- Acquisition
- NINA
- Location
- l'Ampolla
- Sky
- Bortle 4