Rho Ophiuchi cloud complexIC4604 - IC4603
This cloud complex lies in the Ophiuchus constellation, at a distance of approximately 450 light-years from Earth.
The picture has a total integration time of 2 hours 25 minutes composed by individual subframes of 5 minutes @ ISO 1600 each.
They were taken in the La Banderita Observatory, La Pampa province, Argentina, during June 2018.
The used equipment setup: Canon EF 200mm f/2.8L lens, Canon 6D camera (unmodified), Sky Watcher Star Adventurer mount (RA guided with QHY miniguider and QHY5L-II-M guide camera) and homemade anti-dew device. A detail of the zone marked in the following image is shown in this 2 tiles mosaic.
Technical data
| Acquisition site | La Banderita Observatory, La Pampa, Argentina |
| Acquisition dates | 6-18-2018 |
| Instrument | Canon EF 200mm f/2.8. |
| Mount | Sky-Watcher Star Adventurer |
| Guide | QHY MiniGuider with QHY5L-II-M camera |
| Camera | Unmodified Canon 6D |
| Camera sensor temperature | 10°C to 24°C (as reported by camera - ambient temperature between 0°C and -11°C) |
| Integration | 29 subframes @ ISO 1600, 5 minutes each (total integration time: 2 hours 25 minutes |
| Calibration | 49 flats, 400 bias, No darks. |
| Resolution | 6.9 arcsec/pixel 194 mm actual focal, 6.5 um x 6.5 um pixels |
| Native size (each tile) | 5496 x 3670 pixels |
| Cropped size | 5439 x 3550 pixels |
| FOV | 10° 33' x 7° 3' |
| Image center coordinates | RA: 16 h 21 min Dec: -22° 39' Rotación: 86° |
| Acquisition | Maxim DL |
| Process | PixInsight 1.8 |