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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 Saturday, 13 March 2027 · astronomical night 19:57 → 05:02 (9.09 h) · Moon 31% (waxing crescent) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 18:55–19:25: quality 0.1M31 19:25–19:45: quality 0.3M31 19:45–20:00: quality 0.2M31 20:00–20:20: quality 0.4M31 20:20–20:25: quality 0.3M42M42 18:55–19:25: quality 0.1M42 19:25–19:45: quality 0.4M42 19:45–20:00: quality 0.3M42 20:00–21:20: quality 0.7M42 21:20–21:45: quality 0.6M42 21:45–22:05: quality 0.5M42 22:05–22:20: quality 0.4M42 22:20–22:25: quality 0.3observe M42 20:40–22:25M45M45 18:55–19:25: quality 0.1M45 19:25–20:00: quality 0.4M45 20:00–21:30: quality 0.7M45 21:30–21:45: quality 0.6M45 21:45–22:05: quality 0.5M45 22:05–22:20: quality 0.4M45 22:20–22:25: quality 0.3observe M45 19:40–20:40NGC 7000NGC 7000 03:05–03:15: quality 0.4NGC 7000 03:15–03:30: quality 0.5NGC 7000 03:30–03:45: quality 0.6NGC 7000 03:45–04:05: quality 0.7NGC 7000 04:05–05:00: quality 0.8NGC 7000 05:00–05:05: quality 0.9NGC 7000 05:05–05:40: quality 0.4NGC 7000 05:40–06:10: quality 0.1observe NGC 7000 03:05–04:05V1057 CygV1057 Cyg 03:05–03:15: quality 0.4V1057 Cyg 03:15–03:30: quality 0.5V1057 Cyg 03:30–03:50: quality 0.6V1057 Cyg 03:50–04:05: quality 0.7V1057 Cyg 04:05–05:00: quality 0.8V1057 Cyg 05:00–05:05: quality 0.9V1057 Cyg 05:05–05:40: quality 0.4V1057 Cyg 05:40–06:10: quality 0.1observe V1057 Cyg 04:05–05:40M33M33 18:55–19:25: quality 0.1M33 19:25–20:00: quality 0.3M33 20:00–20:10: quality 0.5M33 20:10–20:30: quality 0.4M33 20:30–20:35: quality 0.3observe M33 19:25–19:40scheduleM45M42NGC 7000V1057 Cyg20:0022:0000:0002:0004:0006:00

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
18:20–19:25 — nothing worth pointing at — 1.08
19:25–19:40 M33 0.25 0.31
19:40–20:40 M45 1.0 0.59
20:40–22:25 M42 1.75 0.57
22:25–03:05 — nothing worth pointing at — 4.67
03:05–04:05 NGC 7000 1.0 0.58
04:05–05:40 V1057 Cyg 1.58 0.68
05:40–06:40 — nothing worth pointing at — 1.0

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 4 unknown 20:00–20:25 (marginal) 89.6° at 13:40 41.5° 0.0
M42 Great Orion Nebula 30 unknown 20:00–21:35 (good) 42.9° at 18:35 40.1° 1.75
M45 Seven Sisters 31 unknown 20:00–21:40 (good) 72.5° at 16:45 1.3° 1.0
NGC 7000 North America Nebula 37 unknown 03:40–05:05 (good) 87.2° at 09:55 80.9° 1.0
V1057 Cyg 37 unknown 03:40–05:05 (good) 87.3° at 09:55 80.9° 1.58
M33 Triangulum Pinwheel 6 unknown 20:00–20:35 (marginal) 79.1° at 14:35 30.2° 0.25

Left out

💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2027-03-13"

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"}.