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Sharpless 155 - Cave Nebula
Sharpless 155, also known as the Cave Nebula, Caldwell 9, or LBN
529, is a diffuse bright nebula within a larger nebula complex containing
emission, reflection, and dark nebulosity, which is rich in color. It is located
in the constellation Cepheus. The nebula gets its name "Cave Nebula"
from the dark lane at the eastern side which ends at the brightest curve of
emission nebulosity which gives the appearance of a deep cave when seen through
a telescope visually.
Sharpless 155 - Cave Nebula, HaRGB image.
Exposure Data
- Instrument: 4.9" f/3.8 Wright-Newtonian
- F/stop: 3.8
- Exposure: 13 x 10 min
- Camera: ZWO ASI294MC Pro
- Offset/Gain/Temp: 30 / 0 / -22°C
- Date: September 12, 2018
- Exposure start: 02:53 MESZ
- Location: Wallackhaus, Carinthia
- Conditions: Visual limiting magnitude 6.4 mag, SQM-L sky brightness 21.4 mag/arcsec2, seeing 8/10, temperature 4°C, no wind, no dew
- Autoguider: Lacerta MGEN
- Enhancement: Basic data reduction, registration and combination, background flattening, color calibration, noise reduction, deconvolution, non-linearization, local contract enhancement, star size reduction
- Notes: Thin clouds passing through have created large and colorful halos around bright stars.
