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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, 30 September 2028 · astronomical night 20:36 → 05:45 (9.16 h) · Moon 93% (waxing gibbous) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 19:35–20:05: quality 0.1M31 20:05–20:40: quality 0.2M31 20:40–01:30: quality 0.5M31 01:30–03:55: quality 0.6M31 03:55–05:05: quality 0.7M31 05:05–05:50: quality 0.9M31 05:50–06:20: quality 0.4M31 06:20–06:55: quality 0.1observe M31 03:20–05:00M42M42 02:30–02:35: quality 0.3M42 02:35–02:55: quality 0.4M42 02:55–03:10: quality 0.5M42 03:10–03:30: quality 0.6M42 03:30–04:55: quality 0.7M42 04:55–05:05: quality 0.8M42 05:05–05:50: quality 0.9M42 05:50–06:20: quality 0.4M42 06:20–06:55: quality 0.1observe M42 05:00–06:20M45M45 22:55–23:15: quality 0.3M45 23:15–23:35: quality 0.4M45 23:35–00:10: quality 0.5M45 00:10–01:45: quality 0.6M45 01:45–03:45: quality 0.7M45 03:45–05:05: quality 0.8M45 05:05–05:50: quality 1.0M45 05:50–06:20: quality 0.5M45 06:20–06:30: quality 0.2M45 06:30–06:55: quality 0.1observe M45 00:00–01:40NGC 7000NGC 7000 19:35–20:05: quality 0.1NGC 7000 20:05–20:40: quality 0.3NGC 7000 20:40–20:50: quality 0.6NGC 7000 20:50–03:45: quality 0.5NGC 7000 03:45–04:15: quality 0.4NGC 7000 04:15–04:35: quality 0.3observe NGC 7000 20:40–22:20V1057 CygV1057 Cyg 19:35–20:05: quality 0.1V1057 Cyg 20:05–20:40: quality 0.3V1057 Cyg 20:40–20:50: quality 0.6V1057 Cyg 20:50–03:40: quality 0.5V1057 Cyg 03:40–04:15: quality 0.4V1057 Cyg 04:15–04:35: quality 0.3observe V1057 Cyg 22:20–00:00M33M33 20:20–20:40: quality 0.1M33 20:40–20:50: quality 0.3M33 20:50–21:50: quality 0.4M33 21:50–01:20: quality 0.5M33 01:20–03:50: quality 0.6M33 03:50–05:05: quality 0.7M33 05:05–05:20: quality 1.0M33 05:20–05:50: quality 0.9M33 05:50–06:00: quality 0.5M33 06:00–06:20: quality 0.4M33 06:20–06:55: quality 0.1observe M33 01:40–03:20scheduleNGC 7000V1057 CygM45M33M31M4220:0022:0000:0002:0004:0006:00

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
19:00–20:40 — nothing worth pointing at — 1.67
20:40–22:20 NGC 7000 1.67 0.53
22:20–00:00 V1057 Cyg 1.67 0.51
00:00–01:40 M45 1.67 0.59
01:40–03:20 M33 1.67 0.59
03:20–05:00 M31 1.67 0.65
05:00–06:20 M42 1.33 0.71
06:20–07:20 — nothing worth pointing at — 1.0

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 93 unknown 02:50–05:50 (good) 89.7° at 01:25 54.9° 1.67
M42 Great Orion Nebula 57 unknown 03:20–05:50 (good) 42.9° at 06:15 104.8° 1.33
M45 Seven Sisters 100 unknown 01:00–05:50 (good) 72.5° at 04:30 81.3° 1.67
NGC 7000 North America Nebula 55 unknown 20:40–04:30 (marginal) 87.2° at 21:40 53.8° 1.67
V1057 Cyg 55 unknown 20:40–04:25 (marginal) 87.3° at 21:40 53.7° 1.67
M33 Triangulum Pinwheel 96 unknown 02:45–05:50 (good) 79.1° at 02:15 55.9° 1.67
💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2028-09-30"

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"}.