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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 Thursday, 16 December 2038 · astronomical night 18:31 → 06:01 (11.5 h) · Moon 75% (waning gibbous) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 17:25–18:00: quality 0.2M31 18:00–18:35: quality 0.5M31 18:35–21:30: quality 1.0M31 21:30–22:45: quality 0.9M31 22:45–00:05: quality 0.8M31 00:05–01:10: quality 0.7M31 01:10–01:25: quality 0.6M31 01:25–01:45: quality 0.5M31 01:45–02:05: quality 0.4observe M31 19:45–21:30M42M42 20:30–20:40: quality 0.4M42 20:40–20:55: quality 0.5M42 20:55–21:10: quality 0.6M42 21:10–21:25: quality 0.7M42 21:25–21:30: quality 0.8M42 21:30–02:05: quality 0.6M42 02:05–03:15: quality 0.5M42 03:15–03:40: quality 0.4M42 03:40–04:05: quality 0.3observe M42 01:55–03:55M45M45 17:25–18:00: quality 0.1M45 18:00–18:35: quality 0.4M45 18:35–19:50: quality 0.9M45 19:50–21:30: quality 1.0M45 21:30–00:40: quality 0.8M45 00:40–02:00: quality 0.7M45 02:00–03:15: quality 0.6M45 03:15–03:35: quality 0.5M45 03:35–03:55: quality 0.4M45 03:55–04:05: quality 0.3observe M45 00:10–01:55observe M45 03:55–04:00NGC 7000NGC 7000 17:25–18:00: quality 0.2NGC 7000 18:00–18:35: quality 0.5NGC 7000 18:35–19:10: quality 1.0NGC 7000 19:10–20:40: quality 0.9NGC 7000 20:40–21:30: quality 0.8NGC 7000 21:30–21:45: quality 0.7NGC 7000 21:45–22:00: quality 0.6NGC 7000 22:00–22:20: quality 0.5NGC 7000 22:20–22:35: quality 0.4observe NGC 7000 18:00–19:45V1057 CygV1057 Cyg 17:25–18:00: quality 0.2V1057 Cyg 18:00–18:35: quality 0.5V1057 Cyg 18:35–19:10: quality 1.0V1057 Cyg 19:10–20:40: quality 0.9V1057 Cyg 20:40–21:30: quality 0.8V1057 Cyg 21:30–21:45: quality 0.7V1057 Cyg 21:45–22:00: quality 0.6V1057 Cyg 22:00–22:20: quality 0.5V1057 Cyg 22:20–22:35: quality 0.4observe V1057 Cyg 21:30–22:25M33M33 17:25–18:00: quality 0.1M33 18:00–18:35: quality 0.5M33 18:35–21:30: quality 1.0M33 21:30–23:05: quality 0.9M33 23:05–00:20: quality 0.8M33 00:20–01:25: quality 0.7M33 01:25–01:40: quality 0.6M33 01:40–01:55: quality 0.5M33 01:55–02:15: quality 0.4observe M33 22:25–00:10scheduleNGC 7000M31V1057 CygM33M45M4218:0020:0022:0000:0002:0004:0006:00

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
18:00–19:45 NGC 7000 1.75 0.8
19:45–21:30 M31 1.75 1.0
21:30–22:25 V1057 Cyg 0.92 0.57
22:25–00:10 M33 1.75 0.84
00:10–01:55 M45 1.75 0.72
01:55–03:55 M42 2.0 0.47
03:55–04:00 M45 0.08 0.32
04:00–07:45 — nothing worth pointing at — 3.75

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 100 unknown 18:35–01:15 (good) 89.7° at 19:25 109.5° 1.75
M42 Great Orion Nebula 76 unknown 21:00–00:55 (good) 42.9° at 00:15 67.6° 2.0
M45 Seven Sisters 100 unknown 18:35–02:45 (good) 72.5° at 22:25 84.5° 1.83
NGC 7000 North America Nebula 88 unknown 18:35–21:50 (good) 87.2° at 15:40 117.1° 1.75
V1057 Cyg 88 unknown 18:35–21:50 (good) 87.3° at 15:40 117.2° 0.92
M33 Triangulum Pinwheel 100 unknown 18:35–01:30 (good) 79.2° at 20:15 108.5° 1.75
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2038-12-16"

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"}.