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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, 13 December 2038 · astronomical night 18:31 → 05:59 (11.48 h) · Moon 96% (waning gibbous) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 17:25–18:00: quality 0.2M31 18:00–18:25: quality 0.5M31 18:25–18:35: quality 0.4M31 18:35–19:30: quality 0.8M31 19:30–22:20: quality 0.7M31 22:20–23:45: quality 0.6M31 23:45–01:20: quality 0.5M31 01:20–01:45: quality 0.4M31 01:45–02:15: quality 0.3M31 02:15–02:20: quality 0.2observe M31 21:10–22:45M42M42 20:40–21:00: quality 0.2M42 21:00–21:45: quality 0.3M42 21:45–22:00: quality 0.4M42 22:00–03:15: quality 0.3M42 03:15–04:10: quality 0.2M42 04:10–04:20: quality 0.1M45M45 17:25–18:00: quality 0.1M45 18:00–18:25: quality 0.4M45 18:25–18:35: quality 0.3M45 18:35–20:35: quality 0.6M45 20:35–22:40: quality 0.5M45 22:40–01:25: quality 0.4M45 01:25–03:45: quality 0.3M45 03:45–04:20: quality 0.2observe M45 00:20–01:55observe M45 02:05–03:25NGC 7000NGC 7000 17:25–18:00: quality 0.2NGC 7000 18:00–18:25: quality 0.5NGC 7000 18:25–18:35: quality 0.4NGC 7000 18:35–19:00: quality 0.9NGC 7000 19:00–20:15: quality 0.8NGC 7000 20:15–21:40: quality 0.7NGC 7000 21:40–22:00: quality 0.6NGC 7000 22:00–22:20: quality 0.5NGC 7000 22:20–22:40: quality 0.4NGC 7000 22:40–22:45: quality 0.3observe NGC 7000 18:00–19:35V1057 CygV1057 Cyg 17:25–18:00: quality 0.2V1057 Cyg 18:00–18:25: quality 0.5V1057 Cyg 18:25–18:35: quality 0.4V1057 Cyg 18:35–19:00: quality 0.9V1057 Cyg 19:00–20:15: quality 0.8V1057 Cyg 20:15–21:40: quality 0.7V1057 Cyg 21:40–22:00: quality 0.6V1057 Cyg 22:00–22:20: quality 0.5V1057 Cyg 22:20–22:40: quality 0.4V1057 Cyg 22:40–22:45: quality 0.3observe V1057 Cyg 19:35–21:10M33M33 17:25–18:00: quality 0.1M33 18:00–18:25: quality 0.5M33 18:25–18:35: quality 0.4M33 18:35–18:50: quality 0.8M33 18:50–21:25: quality 0.7M33 21:25–23:30: quality 0.6M33 23:30–01:15: quality 0.5M33 01:15–01:55: quality 0.4M33 01:55–02:20: quality 0.3M33 02:20–02:30: quality 0.2observe M33 22:45–00:20observe M33 01:55–02:05scheduleNGC 7000V1057 CygM31M33M45M4518:0020:0022:0000:0002:0004:0006:00

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
18:00–19:35 NGC 7000 1.58 0.71
19:35–21:10 V1057 Cyg 1.58 0.74
21:10–22:45 M31 1.58 0.66
22:45–00:20 M33 1.58 0.55
00:20–01:55 M45 1.58 0.36
01:55–02:05 M33 0.17 0.32
02:05–03:25 M45 1.33 0.31
03:25–07:45 — nothing worth pointing at — 4.33

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 78 unknown 18:35–23:00 (good) 89.7° at 19:35 79.8° 1.58
M42 Great Orion Nebula 19 unknown 21:20–00:05 (marginal) 42.9° at 00:25 37.6° 0.0
M45 Seven Sisters 56 unknown 18:35–03:25 (marginal) 72.5° at 22:40 46.8° 2.92
NGC 7000 North America Nebula 71 unknown 18:35–21:50 (good) 87.2° at 15:50 107.6° 1.58
V1057 Cyg 71 unknown 18:35–21:50 (good) 87.3° at 15:50 107.7° 1.58
M33 Triangulum Pinwheel 76 unknown 18:35–22:50 (good) 79.2° at 20:25 73.8° 1.75

Left out

💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2038-12-13"

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"}.