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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 Saturday, 19 December 2037 · astronomical night 18:33 → 06:03 (11.51 h) · Moon 93% (waxing gibbous) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 17:25–18:00: quality 0.1M31 18:00–18:25: quality 0.3M31 18:25–18:35: quality 0.2M31 18:35–19:35: quality 0.5M31 19:35–00:55: quality 0.4M31 00:55–01:35: quality 0.3M31 01:35–01:55: quality 0.2observe M31 21:20–23:00M42M42 20:20–21:10: quality 0.2M42 21:10–01:10: quality 0.3M42 01:10–03:10: quality 0.4M42 03:10–03:45: quality 0.3M42 03:45–03:55: quality 0.2observe M42 02:20–03:30M45M45 17:25–18:00: quality 0.1M45 18:00–18:35: quality 0.2M45 18:35–18:45: quality 0.4M45 18:45–01:05: quality 0.3M45 01:05–03:10: quality 0.4M45 03:10–03:45: quality 0.3M45 03:45–03:55: quality 0.2observe M45 00:40–02:20NGC 7000NGC 7000 17:25–18:00: quality 0.1NGC 7000 18:00–18:25: quality 0.4NGC 7000 18:25–18:35: quality 0.3NGC 7000 18:35–19:05: quality 0.7NGC 7000 19:05–20:45: quality 0.6NGC 7000 20:45–21:35: quality 0.5NGC 7000 21:35–22:00: quality 0.4NGC 7000 22:00–22:20: quality 0.3observe NGC 7000 18:00–19:40V1057 CygV1057 Cyg 17:25–18:00: quality 0.1V1057 Cyg 18:00–18:25: quality 0.4V1057 Cyg 18:25–18:35: quality 0.3V1057 Cyg 18:35–19:05: quality 0.7V1057 Cyg 19:05–20:45: quality 0.6V1057 Cyg 20:45–21:35: quality 0.5V1057 Cyg 21:35–22:00: quality 0.4V1057 Cyg 22:00–22:20: quality 0.3observe V1057 Cyg 19:40–21:20M33M33 17:25–18:00: quality 0.1M33 18:00–18:35: quality 0.2M33 18:35–20:15: quality 0.4M33 20:15–01:35: quality 0.3M33 01:35–02:05: quality 0.2observe M33 23:00–00:40scheduleNGC 7000V1057 CygM31M33M45M4218:0020:0022:0000:0002:0004:0006:00

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
16:50–18:00 — nothing worth pointing at — 1.17
18:00–19:40 NGC 7000 1.67 0.55
19:40–21:20 V1057 Cyg 1.67 0.56
21:20–23:00 M31 1.67 0.39
23:00–00:40 M33 1.67 0.31
00:40–02:20 M45 1.67 0.36
02:20–03:30 M42 1.17 0.36
03:30–07:45 — nothing worth pointing at — 4.25

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 37 unknown 18:35–01:15 (marginal) 89.7° at 19:10 46.6° 1.67
M42 Great Orion Nebula 23 unknown 23:20–03:30 (marginal) 42.9° at 00:05 34.7° 1.17
M45 Seven Sisters 31 unknown 22:20–03:25 (marginal) 72.5° at 22:15 8.7° 1.67
NGC 7000 North America Nebula 39 unknown 18:35–19:50 (good) 87.2° at 15:25 86.9° 1.67
V1057 Cyg 39 unknown 18:35–19:50 (good) 87.3° at 15:25 86.9° 1.67
M33 Triangulum Pinwheel 27 unknown 18:35–01:10 (marginal) 79.2° at 20:00 33.2° 1.67
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2037-12-19"

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"}.