Tarantula Nebula in Dorado (Mosaic)NGC2070 - 30 Doradus
At approximately 170000 light-years, in the austral constellation Dorado, lays the "Tarantula Nebula" (NGC2070 or 30 Doradus).
Ubicated into the Large Magellan Cloud (one of the galaxies of the Local Group, probably a satellite of our own galaxy), this is the biggest emission nebula known.
This photography is a 2 tiles mosaic. The total integration time for each tile was approximately 2hs 45 min.
It was taken in two sessions, both at San Antonio de Areco, Buenos Aires, Argentina, separated by 2 years, in October 2015 and November 2017.
The used equipment setup: Newton GSO 200 F4 with GPU Comma Corrector, Canon 600D/T3i modified and refrigerated (sensor measured and regulated temperature 0°C), Astronomik CLS CCD filter, SkyWatcher NEQ6 mount, and homemade electronic focuser and anti-dew systems.
Here, a photography of this nebula taken from Buenos Aires City, using narrowband filters (HOO).
The following picture is a closeup of the central part of the nebula:
Technical data
| Acquisition site | San Antonio de Areco, Buenos Aires, Argentina |
| Acquisition dates | 10-17-2015: Tile 1 x 17 (ISO1600) 11-18-2017: Tile 1 x 16 (ISO800) - Tile 2 x 34 (ISO800) |
| Instrument | Newton GSO F4 200 with GPU coma corrector. |
| Mount | Sky-Watcher NEQ6, managed by EQmod |
| Guide | Off-Axis, with Lodestar camera |
| Camera | Modified Canon 600D/T3i No IR Filter (Full Spectrum mod, using Astronomik MC Clear) Refrigerated (regulated temperature) |
| Camera sensor temperature | 0°C (on-sensor measured and regulated) |
| Filter | Astronomik Clip CLS CCD |
| Integration | Tile 1: 33 subframes @ ISO 800 / ISO 1600, 5 minutes each (total integration time: 2 hours 45 minutes Tile 2: 34 subframes @ ISO 800, 5 minutes each (total integration time: 2 hours 50 minutes |
| Calibration | 49 flats, 400 bias, 84 darks. |
| Resolution | 1.1 arcsec/pixel 787 mm actual focal, 4.2 um x 4.2 um pixels |
| Native size (each tile) | 5202 x 3465 pixels |
| Mosaic size | 5093 x 6150 pixels |
| FOV | 1°33’ x 1° 53' |
| Image center coordinates | RA: 5 h 38 min Dec: -69° 31' Rotation: 10° |
| Process | PixInsight 1.8 |