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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, 24 December 2037 · astronomical night 18:35 → 06:05 (11.5 h) · Moon 94% (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 18:40–19:05: quality 1.0M31 19:05–21:45: quality 0.8M31 21:45–23:05: quality 0.7M31 23:05–00:30: quality 0.6M31 00:30–00:55: quality 0.5M31 00:55–01:15: quality 0.4M31 01:15–01:35: quality 0.3observe M31 21:05–22:35M42M42 20:00–20:25: quality 0.3M42 20:25–20:55: quality 0.4M42 20:55–21:55: quality 0.5M42 21:55–01:15: quality 0.4M42 01:15–03:00: quality 0.3M42 03:00–03:35: quality 0.2observe M42 01:35–02:35M45M45 17:30–18:05: quality 0.1M45 18:05–18:35: quality 0.4M45 18:35–18:40: quality 0.5M45 18:40–19:05: quality 0.9M45 19:05–20:55: quality 0.7M45 20:55–23:20: quality 0.6M45 23:20–01:20: quality 0.5M45 01:20–02:50: quality 0.4M45 02:50–03:20: quality 0.3M45 03:20–03:35: quality 0.2observe M45 00:05–01:35observe M45 02:35–03:05NGC 7000NGC 7000 17:30–17:55: quality 0.2NGC 7000 17:55–18:05: quality 0.1NGC 7000 18:05–18:40: quality 0.5NGC 7000 18:40–19:05: quality 0.9NGC 7000 19:05–20:15: quality 0.8NGC 7000 20:15–21:05: quality 0.7NGC 7000 21:05–21:20: quality 0.6NGC 7000 21:20–21:40: quality 0.5NGC 7000 21:40–22:00: quality 0.4NGC 7000 22:00–22:05: quality 0.3observe NGC 7000 19:35–21:05V1057 CygV1057 Cyg 17:30–17:55: quality 0.2V1057 Cyg 17:55–18:05: quality 0.1V1057 Cyg 18:05–18:40: quality 0.5V1057 Cyg 18:40–19:05: quality 0.9V1057 Cyg 19:05–20:15: quality 0.8V1057 Cyg 20:15–21:05: quality 0.7V1057 Cyg 21:05–21:20: quality 0.6V1057 Cyg 21:20–21:40: quality 0.5V1057 Cyg 21:40–22:00: quality 0.4V1057 Cyg 22:00–22:05: quality 0.3observe V1057 Cyg 18:05–19:35M33M33 17:30–18:05: quality 0.2M33 18:05–18:40: quality 0.5M33 18:40–19:05: quality 1.0M33 19:05–21:25: quality 0.8M33 21:25–23:05: quality 0.7M33 23:05–00:35: quality 0.6M33 00:35–01:05: quality 0.5M33 01:05–01:25: quality 0.4M33 01:25–01:45: quality 0.3observe M33 22:35–00:05scheduleV1057 CygNGC 7000M31M33M45M4218:0020:0022:0000:0002:0004:0006:00

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 0.72
19:35–21:05 NGC 7000 1.5 0.74
21:05–22:35 M31 1.5 0.74
22:35–00:05 M33 1.5 0.63
00:05–01:35 M45 1.5 0.48
01:35–02:35 M42 1.0 0.33
02:35–03:05 M45 0.5 0.35
03:05–07:50 — nothing worth pointing at — 4.75

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 100 unknown 18:40–23:50 (good) 89.6° at 18:50 93.6° 1.5
M42 Great Orion Nebula 33 unknown 20:10–02:35 (marginal) 42.9° at 23:45 48.5° 1.0
M45 Seven Sisters 93 unknown 18:40–22:05 (good) 72.5° at 21:55 63.1° 2.0
NGC 7000 North America Nebula 65 unknown 18:40–21:15 (good) 87.2° at 15:10 114.5° 1.5
V1057 Cyg 65 unknown 18:40–21:15 (good) 87.3° at 15:10 114.5° 1.5
M33 Triangulum Pinwheel 100 unknown 18:40–23:50 (good) 79.2° at 19:45 89.3° 1.5
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2037-12-24"

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"}.