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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 Monday, 11 January 2038 · astronomical night 18:49 → 06:08 (11.3 h) · Moon 35% (waxing crescent) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 17:45–18:20: quality 0.1M31 18:20–18:50: quality 0.4M31 18:50–22:10: quality 0.8M31 22:10–23:05: quality 0.7M31 23:05–23:25: quality 0.8M31 23:25–23:40: quality 0.7M31 23:40–00:00: quality 0.6M31 00:00–00:15: quality 0.5M31 00:15–00:25: quality 0.4observe M31 23:35–00:15M42M42 18:45–18:50: quality 0.2M42 18:50–19:05: quality 0.4M42 19:05–19:25: quality 0.5M42 19:25–19:40: quality 0.6M42 19:40–20:50: quality 0.7M42 20:50–23:05: quality 0.8M42 23:05–00:15: quality 0.9M42 00:15–01:25: quality 0.8M42 01:25–01:45: quality 0.7M42 01:45–02:00: quality 0.6M42 02:00–02:15: quality 0.5M42 02:15–02:25: quality 0.4observe M42 00:15–01:45observe M42 02:20–02:25M45M45 17:45–18:20: quality 0.1M45 18:20–18:50: quality 0.4M45 18:50–20:50: quality 0.8M45 20:50–23:05: quality 0.9M45 23:05–23:25: quality 1.0M45 23:25–00:50: quality 0.9M45 00:50–01:35: quality 0.8M45 01:35–01:50: quality 0.7M45 01:50–02:00: quality 0.6M45 02:00–02:15: quality 0.5M45 02:15–02:20: quality 0.4observe M45 20:45–22:10observe M45 01:45–02:20NGC 7000NGC 7000 17:45–18:20: quality 0.1NGC 7000 18:20–18:50: quality 0.4NGC 7000 18:50–19:50: quality 0.7NGC 7000 19:50–20:10: quality 0.6NGC 7000 20:10–20:30: quality 0.5NGC 7000 20:30–20:50: quality 0.4NGC 7000 07:05–07:20: quality 0.1observe NGC 7000 18:20–19:45V1057 CygV1057 Cyg 17:45–18:20: quality 0.1V1057 Cyg 18:20–18:50: quality 0.4V1057 Cyg 18:50–19:50: quality 0.7V1057 Cyg 19:50–20:10: quality 0.6V1057 Cyg 20:10–20:30: quality 0.5V1057 Cyg 20:30–20:50: quality 0.4V1057 Cyg 07:05–07:20: quality 0.1observe V1057 Cyg 19:45–20:45M33M33 17:45–18:20: quality 0.1M33 18:20–18:50: quality 0.4M33 18:50–22:35: quality 0.8M33 22:35–23:05: quality 0.7M33 23:05–23:45: quality 0.8M33 23:45–23:55: quality 0.7M33 23:55–00:10: quality 0.6M33 00:10–00:25: quality 0.5M33 00:25–00:35: quality 0.4observe M33 22:10–23:35scheduleNGC 7000V1057 CygM45M33M4218:0020:0022:0000:0002:0004:0006:00

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
17:10–18:20 — nothing worth pointing at — 1.17
18:20–19:45 NGC 7000 1.42 0.58
19:45–20:45 V1057 Cyg 1.0 0.53
20:45–22:10 M45 1.42 0.86
22:10–23:35 M33 1.42 0.77
23:35–00:15 M31 0.67 0.57
00:15–01:45 M42 1.5 0.8
01:45–02:20 M45 0.58 0.55
02:20–02:25 M42 0.08 0.4
02:25–07:50 — nothing worth pointing at — 5.42

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 82 unknown 18:50–23:50 (good) 89.7° at 17:40 44.3° 0.67
M42 Great Orion Nebula 88 unknown 19:30–01:50 (good) 42.9° at 22:30 77.4° 1.58
M45 Seven Sisters 97 unknown 18:50–01:55 (good) 72.5° at 20:45 55.9° 2.0
NGC 7000 North America Nebula 26 unknown 18:50–20:00 (good) 87.2° at 13:55 65.8° 1.42
V1057 Cyg 26 unknown 18:50–20:00 (good) 87.3° at 13:55 65.8° 1.0
M33 Triangulum Pinwheel 83 unknown 18:50–00:05 (good) 79.2° at 18:30 37.3° 1.42
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2038-01-11"

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"}.