Observation Notes: a living journal of our shared sky

These logs turn each session into practical learning—capturing what we saw, how the sky behaved, and what we’d try differently next time so every member can build on the last clear night.

  • Conditions seeing, transparency, weather
  • Targets objects observed and timing
  • Reflections technique notes and takeaways

Observation Notes

Recent Observation Log

A practical sequence of recent sessions from club members, with quick context on conditions and targets for easy revisits.

Observing conditions
Bortle 5 · clear
Target
Target: Jupiter

Belts steady near transit with brief moon shadow contrast

Seeing held around 7/10 for twenty minutes, enough to keep both equatorial belts crisp at 160×. Ganymede showed a clean disk, and a short interval of calm air made the shadow detail noticeably darker.

Observing conditions
Bortle 4 · thin haze
Target
Target: Andromeda Galaxy (M31)

Core bright and extended halo visible with averted vision

Humidity softened the outer edges, but the central bulge remained prominent in 10×50 binoculars. Repeated averted-vision sweeps brought out a broader halo than expected from the suburban edge site.

Observing conditions
Bortle 6 · windy
Target
Target: Pleiades (M45)

Cluster shape easy to frame despite unstable high magnification

Gusts made tripod damping the main challenge, so we stayed at lower power and wider field. The brightest members stayed pin-sharp between gusts, and beginners identified the dipper-like arc quickly.

Observing conditions
Bortle 5 · variable seeing
Target
Target: Saturn

Ring tilt obvious; Cassini Division hinted during steady windows

Air turbulence blurred detail for most of the session, but short calm moments revealed a sharper ring edge at 180×. Titan remained consistently visible and helped new observers keep orientation on the field.

Observing conditions
Bortle 4 · transparent
Target
Target: Double Cluster (NGC 869/884)

Both clusters framed cleanly with strong star-color contrast

Transparency was excellent, making the dense cores stand out even at modest magnification. Several members noted subtle warm and cool star tones side by side, a helpful teaching moment for color perception at the eyepiece.