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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 Wednesday, 27 December 2034 · astronomical night 18:37 → 06:06 (11.49 h) · Moon 91% (waning gibbous) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 17:30–18:05: quality 0.2M31 18:05–18:40: quality 0.5M31 18:40–19:50: quality 1.0M31 19:50–20:50: quality 0.9M31 20:50–22:30: quality 0.8M31 22:30–23:55: quality 0.7M31 23:55–00:30: quality 0.6M31 00:30–00:50: quality 0.5M31 00:50–01:15: quality 0.4M31 01:15–01:25: quality 0.3observe M31 19:35–21:05M42M42 19:45–19:50: quality 0.4M42 19:50–20:00: quality 0.3M42 20:00–20:30: quality 0.4M42 20:30–00:00: quality 0.5M42 00:00–02:25: quality 0.4M42 02:25–03:00: quality 0.3M42 03:00–03:20: quality 0.2observe M42 00:45–02:25M45M45 17:30–18:05: quality 0.1M45 18:05–18:25: quality 0.4M45 18:25–18:40: quality 0.5M45 18:40–19:05: quality 0.9M45 19:05–19:50: quality 1.0M45 19:50–20:25: quality 0.8M45 20:25–22:55: quality 0.7M45 22:55–00:50: quality 0.6M45 00:50–02:30: quality 0.5M45 02:30–02:55: quality 0.4M45 02:55–03:15: quality 0.3M45 03:15–03:20: quality 0.2observe M45 23:15–00:45observe M45 02:25–03:05NGC 7000NGC 7000 17:30–17:45: quality 0.2NGC 7000 17:45–18:05: quality 0.1NGC 7000 18:05–18:40: quality 0.5NGC 7000 18:40–19:50: quality 0.9NGC 7000 19:50–20:30: quality 0.8NGC 7000 20:30–21:00: quality 0.7NGC 7000 21:00–21:15: quality 0.6NGC 7000 21:15–21:35: quality 0.5NGC 7000 21:35–21:50: quality 0.4observe NGC 7000 21:05–21:45V1057 CygV1057 Cyg 17:30–17:45: quality 0.2V1057 Cyg 17:45–18:05: quality 0.1V1057 Cyg 18:05–18:40: quality 0.5V1057 Cyg 18:40–19:50: quality 0.9V1057 Cyg 19:50–20:30: quality 0.8V1057 Cyg 20:30–21:00: quality 0.7V1057 Cyg 21:00–21:15: quality 0.6V1057 Cyg 21:15–21:35: quality 0.5V1057 Cyg 21:35–21:50: quality 0.4observe V1057 Cyg 18:05–19:35M33M33 17:30–18:05: quality 0.2M33 18:05–18:40: quality 0.5M33 18:40–19:50: quality 1.0M33 19:50–20:10: quality 0.9M33 20:10–22:35: quality 0.8M33 22:35–23:55: quality 0.7M33 23:55–00:45: quality 0.6M33 00:45–01:05: quality 0.5M33 01:05–01:20: quality 0.4M33 01:20–01:35: quality 0.3observe M33 21:45–23:15scheduleV1057 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
16:55–18:05 — nothing worth pointing at — 1.17
18:05–19:35 V1057 Cyg 1.5 0.74
19:35–21:05 M31 1.5 0.88
21:05–21:45 NGC 7000 0.67 0.5
21:45–23:15 M33 1.5 0.76
23:15–00:45 M45 1.5 0.6
00:45–02:25 M42 1.67 0.39
02:25–03:05 M45 0.67 0.38
03:05–07:50 — nothing worth pointing at — 4.75

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 100 unknown 18:40–00:20 (good) 89.7° at 18:40 103.0° 1.5
M42 Great Orion Nebula 43 unknown 19:45–02:40 (marginal) 42.9° at 23:30 52.7° 1.67
M45 Seven Sisters 100 unknown 18:40–00:05 (good) 72.5° at 21:45 72.0° 2.17
NGC 7000 North America Nebula 63 unknown 18:40–21:05 (good) 87.2° at 14:55 121.2° 0.67
V1057 Cyg 63 unknown 18:40–21:05 (good) 87.3° at 14:55 121.2° 1.5
M33 Triangulum Pinwheel 100 unknown 18:40–00:35 (good) 79.1° at 19:30 98.8° 1.5
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2034-12-27"

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"}.