| Date/Place | 2018-08-16 at Elijah Observatory | |
| Scope | Takahashi FSQ85ED | |
| Camera | QSI583wsg | |
| Integration | Image aquisition with Astroscheduler 1.0 LRGB Composition: L: 42 x 600 sec., bin 1 RGB: 18x600 sec. per channel, bin 1 CCD Temperature: -20 °C | |
| Comment | Diffuse nebula in the constellation Cepheus, within a larger nebula complex containing emission, reflection, and dark nebulosity. Sh2-155 is an ionized H II region with ongoing star formation activity, at an estimated distance of 2400 ly from Earth. Sh2-155 lies at the edge of the Cepheus B cloud (part of the Cepheus molecular cloud), and is ionized by young stars from the Cep OB3 association. It has been suggested that radiation from the hot O-type star HD 217086 is compressing the region, triggering the formation of a new generation of stars.(Text adapted from Wikipedia) On the crops it is possible to see the dark nebula DOBASHI 3442 (top) and some Infrared and Young Stellar Objects (bottom). |
