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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, 17 July 2028 · astronomical night 22:54 → 04:00 (5.11 h) · Moon 21% (waning crescent) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 23:45–23:50: quality 0.4M31 23:50–00:10: quality 0.5M31 00:10–00:25: quality 0.6M31 00:25–00:40: quality 0.7M31 00:40–01:35: quality 0.8M31 01:35–02:05: quality 0.9M31 02:05–02:40: quality 0.8M31 02:40–04:05: quality 0.9M31 04:05–04:50: quality 0.4M31 04:50–05:30: quality 0.1observe M31 00:50–02:10M42M45M45 03:50–04:05: quality 0.4M45 04:05–04:10: quality 0.2M45 04:10–04:45: quality 0.3M45 04:45–04:50: quality 0.4M45 04:50–05:30: quality 0.1observe M45 04:00–04:05observe M45 04:35–04:50NGC 7000NGC 7000 21:30–22:10: quality 0.1NGC 7000 22:10–22:25: quality 0.4NGC 7000 22:25–22:55: quality 0.5NGC 7000 22:55–23:10: quality 0.9NGC 7000 23:10–02:45: quality 1.0NGC 7000 02:45–04:05: quality 0.9NGC 7000 04:05–04:50: quality 0.5NGC 7000 04:50–05:30: quality 0.1observe NGC 7000 22:10–23:30observe NGC 7000 03:30–04:00observe NGC 7000 04:05–04:35V1057 CygV1057 Cyg 21:30–22:10: quality 0.1V1057 Cyg 22:10–22:25: quality 0.4V1057 Cyg 22:25–22:55: quality 0.5V1057 Cyg 22:55–23:10: quality 0.9V1057 Cyg 23:10–02:45: quality 1.0V1057 Cyg 02:45–04:05: quality 0.9V1057 Cyg 04:05–04:50: quality 0.5V1057 Cyg 04:50–05:30: quality 0.1observe V1057 Cyg 23:30–00:50M33M33 01:15–01:20: quality 0.4M33 01:20–01:35: quality 0.5M33 01:35–01:50: quality 0.6M33 01:50–02:30: quality 0.7M33 02:30–04:05: quality 0.8M33 04:05–04:50: quality 0.4M33 04:50–05:30: quality 0.1observe M33 02:10–03:30scheduleNGC 7000V1057 CygM31M33NGC 7000NGC 700022:0000:0002:0004:0006:00

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
20:50–22:10 — nothing worth pointing at — 1.33
22:10–23:30 NGC 7000 1.33 0.67
23:30–00:50 V1057 Cyg 1.33 1.0
00:50–02:10 M31 1.33 0.84
02:10–03:30 M33 1.33 0.77
03:30–04:00 NGC 7000 0.5 0.94
04:00–04:05 M45 0.08 0.44
04:05–04:35 NGC 7000 0.5 0.47
04:35–04:50 M45 0.25 0.34
04:50–06:05 — nothing worth pointing at — 1.25

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 88 unknown 00:15–04:05 (good) 89.7° at 06:20 42.8° 1.33
M42 Great Orion Nebula 0 unknown — 42.9° at 11:10 38.8° 0.0
M45 Seven Sisters 4 unknown 04:30–04:50 (marginal) 72.5° at 09:25 1.7° 0.33
NGC 7000 North America Nebula 100 unknown 22:55–04:05 (good) 87.2° at 02:35 82.2° 2.33
V1057 Cyg 100 unknown 22:55–04:05 (good) 87.3° at 02:35 82.2° 1.33
M33 Triangulum Pinwheel 51 unknown 01:45–04:05 (good) 79.1° at 07:10 31.4° 1.33

Left out

💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2028-07-17"

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"}.