Celestial hemisphere:  Southern  ·  Constellation: Orion (Ori)  ·  Contains:  Horsehead nebula  ·  IC 431  ·  IC 432  ·  IC 434  ·  IC 435  ·  NGC 2023  ·  NGC 2024  ·  The star Alnitak (ζOri)  ·  The star σOri
Learning Curve: Horse Head Nebula(B33) above Bortle Class 9 Sky, Min Xie
Learning Curve: Horse Head Nebula(B33) above Bortle Class 9 Sky
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Learning Curve: Horse Head Nebula(B33) above Bortle Class 9 Sky

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Description

Decided to do another test in the city on a more challenging target. The tracking of Star Adventurer performed exceptionally well under guiding. Humidity about 43%. Used longer integration time and no clouds for the whole 4-hour session in the backyard.

As expected, this can't compare to the outcome from the dark site. But it's an extreme testing case. Narrow-band is the only way out in the city!

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