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Rozhen Night Plan

Up to ten targets, one night: each gets its good/marginal/poor windows (darkness × altitude × Moon × clouds, as on the single-target page), then the night is handed out five minutes at a time to whichever target is best — with hysteresis, so you get a few solid blocks of at least 30 minutes, not a flicker. Targets that never win a block are listed with the reason.

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Night of Monday, 15 February 2027 · astronomical night 19:27 → 05:42 (10.26 h) · Moon 68% (waxing gibbous) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 18:25–18:55: quality 0.1M31 18:55–19:30: quality 0.3M31 19:30–21:10: quality 0.5M31 21:10–21:35: quality 0.4M31 21:35–22:05: quality 0.3observe M31 19:30–20:30M42M42 18:25–18:55: quality 0.1M42 18:55–19:30: quality 0.2M42 19:30–23:30: quality 0.4M42 23:30–00:00: quality 0.3M42 00:00–00:05: quality 0.2observe M42 22:30–23:45M45M45 18:25–18:55: quality 0.1M45 18:55–19:30: quality 0.2M45 19:30–21:35: quality 0.5M45 21:35–23:35: quality 0.4M45 23:35–00:00: quality 0.3M45 00:00–00:05: quality 0.2observe M45 21:30–22:30NGC 7000NGC 7000 18:25–18:30: quality 0.1NGC 7000 04:45–04:55: quality 0.4NGC 7000 04:55–05:15: quality 0.5NGC 7000 05:15–05:30: quality 0.6NGC 7000 05:30–05:45: quality 0.7NGC 7000 05:45–06:15: quality 0.4NGC 7000 06:15–06:50: quality 0.1observe NGC 7000 04:45–05:45V1057 CygV1057 Cyg 18:25–18:30: quality 0.1V1057 Cyg 04:45–04:55: quality 0.4V1057 Cyg 04:55–05:15: quality 0.5V1057 Cyg 05:15–05:30: quality 0.6V1057 Cyg 05:30–05:45: quality 0.7V1057 Cyg 05:45–06:15: quality 0.4V1057 Cyg 06:15–06:50: quality 0.1observe V1057 Cyg 05:45–06:15M33M33 18:25–18:55: quality 0.1M33 18:55–19:30: quality 0.3M33 19:30–21:10: quality 0.5M33 21:10–21:45: quality 0.4M33 21:45–22:10: quality 0.3M33 22:10–22:15: quality 0.2observe M33 20:30–21:30scheduleM31M33M45M42NGC 700018:0020:0022:0000:0002:0004:0006:00

Each row is the target's quality through the night, white → amber → green for 0 → 0.3 → 0.6 → 1 (the same thresholds as poor / marginal / good). Dark blue: the schedule. Grey columns: twilight.  Download: schedule CSV · targets CSV · JSON

Schedule

localtargethoursmean quality
17:50–19:30 — nothing worth pointing at — 1.67
19:30–20:30 M31 1.0 0.51
20:30–21:30 M33 1.0 0.45
21:30–22:30 M45 1.0 0.44
22:30–23:45 M42 1.25 0.4
23:45–04:45 — nothing worth pointing at — 5.0
04:45–05:45 NGC 7000 1.0 0.57
05:45–06:15 V1057 Cyg 0.5 0.4
06:15–07:20 — nothing worth pointing at — 1.08

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 18 unknown 19:30–21:50 (marginal) 89.7° at 15:25 54.6° 1.0
M42 Great Orion Nebula 22 unknown 19:30–23:45 (marginal) 42.9° at 20:15 33.7° 1.25
M45 Seven Sisters 25 unknown 19:30–23:45 (marginal) 72.5° at 18:25 18.1° 1.0
NGC 7000 North America Nebula 15 unknown 05:20–05:45 (good) 87.2° at 11:35 90.6° 1.0
V1057 Cyg 15 unknown 05:20–05:45 (good) 87.3° at 11:35 90.6° 0.5
M33 Triangulum Pinwheel 17 unknown 19:30–22:00 (marginal) 79.1° at 16:15 45.9° 1.0
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2027-02-15"

targets: names or RA Dec, separated by commas, semicolons or newlines, at most ten. The response carries targets[] (score, verdict, best_window, windows, transit, moon_separation), schedule[] (blocks with target, start/end in UTC and local, hours, mean_quality; target: null is idle time), unscheduled[] with a why, forecast_source, warnings[]. Missing targets → 400 {"error", "code": "targets_missing"}; an unreadable date → 400 {"error", "code": "invalid_date"}.