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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, 20 July 2028 · astronomical night 22:50 → 04:05 (5.25 h) · Moon 2% (new moon) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 23:30–23:40: quality 0.4M31 23:40–23:55: quality 0.5M31 23:55–00:10: quality 0.6M31 00:10–00:30: quality 0.7M31 00:30–01:20: quality 0.8M31 01:20–02:45: quality 0.9M31 02:45–04:10: quality 1.0M31 04:10–04:55: quality 0.5M31 04:55–05:05: quality 0.2M31 05:05–05:35: quality 0.1observe M31 00:55–02:20M42M45M45 03:40–03:45: quality 0.4M45 03:45–04:00: quality 0.5M45 04:00–04:10: quality 0.6M45 04:10–04:20: quality 0.3M45 04:20–04:55: quality 0.4M45 04:55–05:35: quality 0.1observe M45 03:45–04:55NGC 7000NGC 7000 21:25–22:05: quality 0.1NGC 7000 22:05–22:15: quality 0.4NGC 7000 22:15–22:55: quality 0.5NGC 7000 22:55–23:00: quality 0.9NGC 7000 23:00–04:10: quality 1.0NGC 7000 04:10–04:55: quality 0.5NGC 7000 04:55–05:05: quality 0.2NGC 7000 05:05–05:35: quality 0.1observe NGC 7000 22:05–23:30V1057 CygV1057 Cyg 21:25–22:05: quality 0.1V1057 Cyg 22:05–22:15: quality 0.4V1057 Cyg 22:15–22:55: quality 0.5V1057 Cyg 22:55–23:00: quality 0.9V1057 Cyg 23:00–04:10: quality 1.0V1057 Cyg 04:10–04:55: quality 0.5V1057 Cyg 04:55–05:05: quality 0.2V1057 Cyg 05:05–05:35: quality 0.1observe V1057 Cyg 23:30–00:55M33M33 01:05–01:10: quality 0.4M33 01:10–01:25: quality 0.5M33 01:25–01:40: quality 0.6M33 01:40–01:55: quality 0.7M33 01:55–02:40: quality 0.8M33 02:40–04:00: quality 0.9M33 04:00–04:10: quality 1.0M33 04:10–04:55: quality 0.5M33 04:55–05:05: quality 0.2M33 05:05–05:35: quality 0.1observe M33 02:20–03:45scheduleNGC 7000V1057 CygM31M33M4522:0000:0002:0004:0006:00

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
20:50–22:05 — nothing worth pointing at — 1.25
22:05–23:30 NGC 7000 1.42 0.67
23:30–00:55 V1057 Cyg 1.42 1.0
00:55–02:20 M31 1.42 0.87
02:20–03:45 M33 1.42 0.88
03:45–04:55 M45 1.17 0.44
04:55–06:10 — nothing worth pointing at — 1.25

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 100 unknown 00:05–04:10 (good) 89.5° at 06:10 76.8° 1.42
M42 Great Orion Nebula 0 unknown — 42.9° at 11:00 35.1° 0.0
M45 Seven Sisters 10 unknown 04:05–04:10 (good) 72.5° at 09:10 42.9° 1.17
NGC 7000 North America Nebula 100 unknown 22:55–04:10 (good) 87.2° at 02:25 106.2° 1.42
V1057 Cyg 100 unknown 22:55–04:10 (good) 87.3° at 02:25 106.3° 1.42
M33 Triangulum Pinwheel 70 unknown 01:30–04:10 (good) 79.1° at 07:00 70.2° 1.42

Left out

💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2028-07-20"

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"}.