Notes from a small backyard observatory.
Deep-sky targets, long integrations, and everything that went wrong along the way. Shot under Bortle 5 skies, whenever the clouds allow.
September 28, 2026 · Nebulae
Three clear nights in a row is rare enough here that I dropped everything else. Two-panel mosaic, dual-band filter, and a lot of patience with gradient removal on the eastern edge.
Integration: 14h 20m · 300s subs · Ha/OIII dual-band · gain 100 · −10°C
August 17, 2026 · Processing
A short note on why my M31 from last year looked plastic, and how a gentler curve plus star reduction at the end fixed most of it.
July 2, 2026 · Gear
Off-axis guiding sounded like overkill until flexure ruined a whole night of data. Here's the setup that finally gives round stars at 600mm.
RMS before: 1.4″ · after: 0.6″ · guide rate 0.5×
May 11, 2026 · Galaxies
M51, M101 and a stubborn attempt at the Leo Triplet. Short nights, lots of moon, still worth it.