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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, 26 June 2027 · astronomical night 23:10 → 03:37 (4.45 h) · Moon 53% (last quarter) · weather: none — the schedule is astronomy only; overall conditions unknown

M31M31 01:10–01:15: quality 0.3M31 01:15–01:40: quality 0.4M31 01:40–02:00: quality 0.5M31 02:00–03:40: quality 0.6M31 03:40–04:35: quality 0.3M31 04:35–05:15: quality 0.1observe M31 01:30–03:05M42M45NGC 7000NGC 7000 21:35–22:20: quality 0.1NGC 7000 22:20–23:15: quality 0.4NGC 7000 23:15–00:35: quality 0.9NGC 7000 00:35–00:55: quality 1.0NGC 7000 00:55–03:40: quality 0.8NGC 7000 03:40–04:35: quality 0.4NGC 7000 04:35–05:15: quality 0.1observe NGC 7000 22:20–23:55observe NGC 7000 03:40–04:35V1057 CygV1057 Cyg 21:35–22:20: quality 0.1V1057 Cyg 22:20–23:15: quality 0.4V1057 Cyg 23:15–00:35: quality 0.9V1057 Cyg 00:35–00:55: quality 1.0V1057 Cyg 00:55–03:40: quality 0.8V1057 Cyg 03:40–04:35: quality 0.4V1057 Cyg 04:35–05:15: quality 0.1observe V1057 Cyg 23:55–01:30M33M33 02:40–02:50: quality 0.3M33 02:50–03:15: quality 0.4M33 03:15–03:35: quality 0.5M33 03:35–03:40: quality 0.6M33 03:40–04:35: quality 0.3M33 04:35–05:15: quality 0.1observe M33 03:05–03:40scheduleNGC 7000V1057 CygM31M33NGC 700022:0000:0002:0004:00

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
20:55–22:20 — nothing worth pointing at — 1.42
22:20–23:55 NGC 7000 1.58 0.61
23:55–01:30 V1057 Cyg 1.58 0.89
01:30–03:05 M31 1.58 0.57
03:05–03:40 M33 0.58 0.49
03:40–04:35 NGC 7000 0.92 0.37
04:35–05:50 — nothing worth pointing at — 1.25

Targets

targetastronomyoverallbest windowhighestMoon sep.scheduled h
M31 Andromeda Galaxy 28 unknown 02:10–03:40 (good) 89.7° at 07:45 38.0° 1.58
M42 Great Orion Nebula 0 unknown — 42.9° at 12:40 84.1° 0.0
M45 Seven Sisters 0 unknown — 72.5° at 10:50 57.6° 0.0
NGC 7000 North America Nebula 97 unknown 23:15–03:40 (good) 87.2° at 04:00 56.4° 2.5
V1057 Cyg 97 unknown 23:15–03:40 (good) 87.3° at 04:00 56.3° 1.58
M33 Triangulum Pinwheel 11 unknown 02:40–03:40 (marginal) 79.1° at 08:35 34.2° 0.58

Left out

💡 API 
curl -sS "https://devops.majbase.com/rozhen-planner/plan-api?targets=M31,M42,M45,NGC%207000&date=2027-06-26"

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"}.