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 SH2-155 Wide Field 
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About:
This colorful skyscape spans about four full moons (2 degrees) across nebula rich starfields along the plane of our Milky Way Galaxy in the royal northern constellation Cepheus. Near the edge of the region's massive molecular cloud some 2,400 light-years away, bright reddish emission region Sharpless (Sh) 155 lies at the center, also known as the Cave Nebula. About 10 light-years across the cosmic cave's bright rims of gas are ionized by ultraviolet light from hot young stars. Dusty blue reflection nebulae also abound on the interstellar canvas cut by dense obscuring clouds of dust. The long core of the Lynds Dark Nebula (LDN) 1210 anchors the scene at right. Astronomical explorations have revealed other dramatic signs of star formation, including the bright red fleck of Herbig-Haro (HH) 168. Directly below the bright Cave Nebula, the Herbig-Haro object emission is generated by energetic jets from a newborn star. [Text adapted from APOD]



Optics: Takahashi FSQ-106EDXIII F/5 530mm. - APO Refractor
Mount: AP Mach1 GTO
Camera: Moravian G3-16200
Filters: Optolong LRGB 2"
Guiding Systems: SX Lodestar
Dates/Times: 24-27 September 2016 / 03 October 2016
Location: Pragelato (Turin) - Italy
Exposure Details: L:R:G:B => 360:110:180:155 = > (72x5):(22x5):(36x5):(31x5) All Bin1 [num x minutes]
Cooling Details: -25 C
Acquisition: Maxim DL/CCD, Voyager
Processing: CCDStack2+, PixInsight, PS CS5
Mean FWHM: 2.34 / 3.18
SQM-L: 19.71 / 20.04