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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 Tuesday, 27 December 2039 · astronomical night 18:37 → 06:06 (11.49 h) · Moon 94% (waxing gibbous) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 17:30–18:05: quality 0.1M31 18:05–18:35: quality 0.3M31 18:35–18:40: quality 0.2M31 18:40–19:50: quality 0.5M31 19:50–23:50: quality 0.4M31 23:50–01:00: quality 0.3M31 01:00–01:25: quality 0.2observe M31 20:55–22:20observe M31 23:55–00:40M42M42 19:50–19:55: quality 0.1M42 19:55–22:50: quality 0.2M42 22:50–03:00: quality 0.3M42 03:00–03:25: quality 0.2observe M42 02:20–02:35M45M45 17:30–18:05: quality 0.1M45 18:05–18:40: quality 0.2M45 18:40–03:00: quality 0.3M45 03:00–03:25: quality 0.2observe M45 00:55–02:20observe M45 02:35–02:40NGC 7000NGC 7000 17:30–18:05: quality 0.1NGC 7000 18:05–18:10: quality 0.4NGC 7000 18:10–18:40: quality 0.3NGC 7000 18:40–18:50: quality 0.7NGC 7000 18:50–20:25: quality 0.6NGC 7000 20:25–21:05: quality 0.5NGC 7000 21:05–21:30: quality 0.4NGC 7000 21:30–21:55: quality 0.3observe NGC 7000 19:30–20:55V1057 CygV1057 Cyg 17:30–18:05: quality 0.1V1057 Cyg 18:05–18:10: quality 0.4V1057 Cyg 18:10–18:40: quality 0.3V1057 Cyg 18:40–18:50: quality 0.7V1057 Cyg 18:50–20:25: quality 0.6V1057 Cyg 20:25–21:05: quality 0.5V1057 Cyg 21:05–21:30: quality 0.4V1057 Cyg 21:30–21:55: quality 0.3observe V1057 Cyg 18:05–19:30M33M33 17:30–18:05: quality 0.1M33 18:05–18:40: quality 0.2M33 18:40–20:55: quality 0.4M33 20:55–01:00: quality 0.3M33 01:00–01:35: quality 0.2observe M33 22:20–23:55scheduleV1057 CygNGC 7000M31M33M4518:0020:0022:0000:0002:0004:0006:00

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
16:55–18:05 — nothing worth pointing at — 1.17
18:05–19:30 V1057 Cyg 1.42 0.51
19:30–20:55 NGC 7000 1.42 0.56
20:55–22:20 M31 1.42 0.4
22:20–23:55 M33 1.58 0.31
23:55–00:40 M31 0.75 0.34
00:40–00:55 — nothing worth pointing at — 0.25
00:55–02:20 M45 1.42 0.31
02:20–02:35 M42 0.25 0.31
02:35–02:40 M45 0.08 0.31
02:40–07:50 — nothing worth pointing at — 5.17

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 34 unknown 18:40–00:40 (marginal) 89.6° at 18:40 50.7° 2.17
M42 Great Orion Nebula 16 unknown 01:20–02:35 (marginal) 42.9° at 23:35 31.6° 0.25
M45 Seven Sisters 24 unknown 18:40–20:30 (marginal) 72.5° at 21:45 9.4° 1.5
NGC 7000 North America Nebula 32 unknown 18:40–19:35 (good) 87.2° at 15:00 89.6° 1.42
V1057 Cyg 32 unknown 18:40–19:35 (good) 87.2° at 15:00 89.6° 1.42
M33 Triangulum Pinwheel 26 unknown 18:40–23:55 (marginal) 79.2° at 19:35 39.5° 1.58
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2039-12-27"

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"}.