Celestial hemisphere:  Northern  ·  Constellation: Canes Venatici (CVn)  ·  Contains:  M 51  ·  NGC 5194  ·  NGC 5195  ·  Whirlpool galaxy
First light: M51 from light-polluted Los Angeles, Jason Fields
First light: M51 from light-polluted Los Angeles
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First light: M51 from light-polluted Los Angeles

Equipment

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Description

First light, first successful RGB sequence. Engineering night: testing auto-focus, flat frames, and other equipment; taken under ~16 mag/arcsec**2 sky with ~80% humidity. Special thanks to OPT for helping engineer an adapter between the SV25 focuser and the SBIG camera. Sky background in B and especially G was nearly half well; R-band SNR is much better.

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Sky plot

Sky plot

Histogram

First light: M51 from light-polluted Los Angeles, Jason Fields