Sharpless 2 155 (SH2 155)
The Cave Nebula, Sh2-155 or Caldwell 9, is a dim and very diffuse bright nebula within a larger nebula complex containing emission, reflection, and dark nebulosity.
Visually it is a difficult object, but with adequate exposure, makes a striking image. The nebula gets its name from the dark lane at the eastern side abutting the brightest curve of emission nebulosity which gives the appearance of a deep cave when seen through a telescope visually.
Photo Details
Telescope: FSQ106EDX (530 mm) Takahashi
Camera: ST-8300M, Sbig Filter wheel, Baader 36mm round HLRGB filters
Mount: NJP Takahashi
Guiding: Off-axis Orion SS Autoguider
Exposure: H 20x20min RGB - 8,7,8 x 8min
Other information: Tarnów for HA, RGB outside of city light
Photo Details
Telescope: FSQ106EDX (530 mm) Takahashi
Camera: Sbig ST-2000XM, Filter wheel, Baader 1.25" LRGB filtes
Mount: NJP Takahashi
Guiding: Self-guided
Exposure: HRGB 10h
When: ----
Other information: ---