Claude
975c9cc2eb
moon_phase.py: add sun_events_in_range() — returns actual sunset/sunrise transitions via skyfield almanac, accurate to within a minute moon_phase_monthly.py: - _dark_moon_intervals(): replace sun-altitude threshold sampling with actual sunset/sunrise times; dark window = sunset + DARK_START_MIN to next sunrise; moon-above-horizon check still sampled every 10 min within each night; polar fallback if no sun events found - run_phase(): sort dark-window frames by proximity to exact phase moment before scanning; first clear detection = the frame temporally closest to the moon being precisely full/at quarter, not just the first in time order - Replace DARK_SKY_SUN_ALT_DEG with DARK_START_MIN (default 30 min) sky-cam.conf: replace MOON_DARK_SKY_SUN_ALT_DEG with MOON_DARK_START_MIN=30; update comments to explain ±24h window, sunset+30 start, closest-frame logic, and how the 01:30 and 23:55 edge cases are handled https://claude.ai/code/session_01HkTxpNSTWtViZzxbrbKytR
486 lines
18 KiB
Python
Executable File
486 lines
18 KiB
Python
Executable File
#!/usr/bin/env python3
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"""moon_phase_monthly.py — build the monthly moon-phase close-up.
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Handles three phases, controlled by --phase:
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full ~100% lit, posted MOON_FULL_POST_DELAY_DAYS after exact full
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first-quarter ~50% lit waxing (right half lit in northern hemisphere)
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third-quarter ~50% lit waning (left half lit in northern hemisphere)
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Algorithm (per phase):
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1. Find the most recent occurrence of the target phase (or honour --target).
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2. Scan east frames across the collection window (D-Δb .. D+Δa) and pick
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the frame closest in time to exact phase UTC where east successfully
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detected the moon and standard quality / altitude / illumination
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thresholds are met. East is the WITNESS — it confirms you actually had
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a chance to see the moon that night.
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3. Round east's capture timestamp to the nearest hour and fetch the NASA
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SVS Dial-a-Moon render for that hour. This gives a real-physics moon
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image with correct phase, libration and crater shadows.
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4. Render full-screen on a black background (moon fills ~92% of frame
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height), drop a caption naming the phase / month / capture moment /
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attribution, and upload to Mattermost.
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Geometry note — first-quarter from east is HARD: at first quarter the moon is
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up from noon to midnight, but east only sees the eastern sky, so it captures
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the moon during DAYTIME only (with a bright sky background). The detector is
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brightness-based and may often fail to find a daytime moon. Set
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MOON_FIRST_QUARTER_ENABLED=false in sky-cam.conf if you'd rather not chase it.
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Full moon and third-quarter both rise after dark and stay in east's view —
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those should land cleanly most months.
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Usage:
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moon_phase_monthly.py # auto: run any phase whose post-day = today
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moon_phase_monthly.py --phase full # force a single phase
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moon_phase_monthly.py --phase third-quarter --target 2026-04-09T11:51:00Z --dry-run
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"""
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from __future__ import annotations
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import argparse
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import os
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import pathlib
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import re
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import subprocess
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import sys
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from datetime import datetime, timedelta, timezone
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_here = pathlib.Path(__file__).resolve().parent
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sys.path.insert(0, str(_here))
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def _read_conf(path):
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conf = {}
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try:
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with open(path) as f:
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for line in f:
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line = line.strip()
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if not line or line.startswith('#') or '=' not in line:
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continue
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k, v = line.split('=', 1)
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k = k.strip()
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v = v.strip()
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v = re.sub(r'\s+#.*$', '', v)
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v = v.strip('"').strip("'")
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m = re.match(r'^\$\{[^}]+:-([^}]*)\}$', v)
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if m:
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v = m.group(1).strip('"').strip("'")
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conf[k] = v
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except FileNotFoundError:
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pass
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return conf
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CONF = _read_conf(_here / 'sky-cam.conf')
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CONF.update(_read_conf(_here / '.env'))
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BASE_DIR = CONF.get('BASE_DIR') or str(_here / 'data')
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MOVIES_DIR = CONF.get('MOVIES_DIR') or f'{BASE_DIR}/movies'
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SUNRISE_CAM = CONF.get('SUNRISE_CAM', 'east')
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TIMEZONE = CONF.get('TIMEZONE', 'UTC')
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MIN_QUALITY = float(CONF.get('MOON_MIN_QUALITY', CONF.get('MOON_FULL_MIN_QUALITY', 0.55)))
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MIN_ALTITUDE = float(CONF.get('MOON_MIN_ALTITUDE_DEG', CONF.get('MOON_FULL_MIN_ALTITUDE_DEG', 15.0)))
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OUT_W = int(CONF.get('MOON_OUTPUT_W', CONF.get('MOON_FULL_OUTPUT_W', 1920)))
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OUT_H = int(CONF.get('MOON_OUTPUT_H', CONF.get('MOON_FULL_OUTPUT_H', 1080)))
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MOON_PCT = float(CONF.get('MOON_HEIGHT_PCT', 0.92))
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REQUIRE_EAST_VERIFY = CONF.get('MOON_REQUIRE_EAST_VERIFY', 'true').lower() != 'false'
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DARK_START_MIN = int(CONF.get('MOON_DARK_START_MIN', 30))
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PHASE_SPEC = {
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'full': {
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'index': 2,
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'label': 'Full Moon',
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'emoji': '🌕',
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'post_delay': int(CONF.get('MOON_FULL_POST_DELAY_DAYS', 1)),
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'enabled_key': 'MOON_FULL_ENABLED',
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},
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'first-quarter': {
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'index': 1,
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'label': 'First Quarter (Waxing Half)',
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'emoji': '🌓',
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'post_delay': int(CONF.get('MOON_QUARTER_POST_DELAY_DAYS', 1)),
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'enabled_key': 'MOON_FIRST_QUARTER_ENABLED',
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},
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'third-quarter': {
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'index': 3,
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'label': 'Third Quarter (Waning Half)',
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'emoji': '🌗',
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'post_delay': int(CONF.get('MOON_QUARTER_POST_DELAY_DAYS', 1)),
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'enabled_key': 'MOON_THIRD_QUARTER_ENABLED',
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},
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}
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_FRAME_RE = re.compile(r'^(\d{2})-(\d{2})-(\d{2})\.jpg$')
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def _local_tz():
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try:
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import pytz
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return pytz.timezone(TIMEZONE)
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except Exception:
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return timezone.utc
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def _frame_local_dt(date_str: str, fname: str):
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m = _FRAME_RE.match(fname)
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if not m:
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return None
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h, mn, s = (int(x) for x in m.groups())
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y, mo, d = (int(x) for x in date_str.split('-'))
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naive = datetime(y, mo, d, h, mn, s)
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tz = _local_tz()
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if hasattr(tz, 'localize'):
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return tz.localize(naive)
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return naive.replace(tzinfo=tz)
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def _candidate_frames(cam: str, dates: list[str]) -> list[tuple[str, datetime]]:
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out = []
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for d in dates:
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fdir = pathlib.Path(BASE_DIR) / cam / d
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if not fdir.is_dir():
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continue
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for fname in sorted(os.listdir(fdir)):
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if not fname.endswith('.jpg'):
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continue
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local_dt = _frame_local_dt(d, fname)
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if local_dt is None:
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continue
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out.append((str(fdir / fname), local_dt.astimezone(timezone.utc)))
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return out
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def _format_local(dt_utc: datetime) -> str:
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return dt_utc.astimezone(_local_tz()).strftime('%Y-%m-%d %H:%M:%S %Z')
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def _notify(title: str, body: str):
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try:
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subprocess.run([str(_here / 'notify.sh'), title, body], check=False)
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except FileNotFoundError:
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pass
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def _post_to_mattermost(image_path: str, message: str) -> bool:
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import requests
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base = CONF.get('mattermost_url', '').rstrip('/')
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token = CONF.get('access_token', '')
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channel_id = CONF.get('channel_id', '')
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if not all([base, token, channel_id]):
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print('mattermost credentials missing — skipping upload', file=sys.stderr)
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return False
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headers = {'Authorization': f'Bearer {token}'}
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with open(image_path, 'rb') as f:
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r = requests.post(
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f'{base}/api/v4/files',
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headers=headers,
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files={'files': f},
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data={'channel_id': channel_id},
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)
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if r.status_code != 201:
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print(f'mattermost upload failed: {r.status_code} {r.text}', file=sys.stderr)
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return False
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file_id = r.json()['file_infos'][0]['id']
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r = requests.post(
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f'{base}/api/v4/posts',
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headers=headers,
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json={'channel_id': channel_id, 'message': message, 'file_ids': [file_id]},
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)
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if r.status_code != 201:
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print(f'mattermost post failed: {r.status_code} {r.text}', file=sys.stderr)
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return False
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return True
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def _output_subdir(phase: str) -> str:
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return {
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'full': 'full-moons',
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'first-quarter': 'first-quarter',
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'third-quarter': 'third-quarter',
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}[phase]
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def _output_filename(phase: str, target_utc: datetime) -> str:
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slug = {'full': 'full', 'first-quarter': 'first-quarter', 'third-quarter': 'third-quarter'}[phase]
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return f"{target_utc.strftime('%Y-%m')}-{slug}.jpg"
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def _dark_moon_intervals(
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search_start: datetime,
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search_end: datetime,
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moon_phase_mod,
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) -> list[tuple[datetime, datetime]]:
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"""Return contiguous blocks where the sky is dark and the moon is visible.
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'Dark' means after (sunset + DARK_START_MIN) and before the following
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sunrise, based on actual computed sunset/sunrise times. Within each night
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block we sample every 10 min and keep only the sub-intervals where the
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moon is above MIN_ALTITUDE_DEG. Falls back to sampling sun altitude
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directly if skyfield can't find sunrise/sunset events (e.g. polar summer).
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"""
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# Get actual sunset/sunrise events; widen the window a bit to catch events
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# that fall right at the boundary.
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events = moon_phase_mod.sun_events_in_range(
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search_start - timedelta(hours=2),
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search_end + timedelta(hours=2),
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)
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# Build night periods from real sunset/sunrise times.
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night_periods: list[tuple[datetime, datetime]] = []
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for i, (evt_t, is_rise) in enumerate(events):
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if is_rise:
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continue # only care about sunsets here
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dark_start = evt_t + timedelta(minutes=DARK_START_MIN)
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# The night ends at the next sunrise (or search_end if none found).
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next_rise = next((t for t, r in events[i + 1:] if r), None)
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dark_end = next_rise if next_rise is not None else search_end
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if dark_start < dark_end:
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night_periods.append((dark_start, dark_end))
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# Polar fallback: no sunset/sunrise events found.
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if not night_periods:
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night_periods = [(search_start, search_end)]
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# Within each night, sample every 10 min to find where moon is high enough.
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step = timedelta(minutes=10)
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intervals: list[tuple[datetime, datetime]] = []
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for night_start, night_end in night_periods:
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t = max(night_start, search_start)
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end = min(night_end, search_end)
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if t >= end:
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continue
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seg_start = None
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while t <= end:
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try:
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moon_alt, _ = moon_phase_mod.altaz(t)
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except Exception:
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t += step
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continue
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ok = moon_alt >= MIN_ALTITUDE
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if ok and seg_start is None:
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seg_start = t
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elif not ok and seg_start is not None:
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intervals.append((seg_start, t))
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seg_start = None
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t += step
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if seg_start is not None:
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intervals.append((seg_start, end))
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return intervals
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def run_phase(phase: str, target_utc: datetime | None, cam: str,
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dry_run: bool, no_upload: bool, out_path: str | None) -> int:
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spec = PHASE_SPEC[phase]
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if CONF.get(spec['enabled_key'], 'true').lower() == 'false':
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print(f'{spec["enabled_key"]}=false — skipping {phase}')
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return 0
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import moon_phase
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from moon_detect import detect_moon
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if target_utc is None:
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now = datetime.now(timezone.utc)
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events = moon_phase.phase_events_in_range(
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now - timedelta(days=45), now, spec['index'])
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if not events:
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print(f'no recent {phase} found in past 45 days', file=sys.stderr)
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return 1
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target_utc = events[-1]
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print(f'target {phase}: {target_utc.isoformat()} ({_format_local(target_utc)})')
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tz = _local_tz()
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if not REQUIRE_EAST_VERIFY:
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print('MOON_REQUIRE_EAST_VERIFY=false — skipping east scan, using exact phase UTC')
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return _render_and_post(phase, spec, target_utc, target_utc,
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cam, dry_run, no_upload, out_path,
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witness_text='east verification disabled')
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# Find every interval within ±24h of the phase moment where the sky is
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# dark (sun below civil twilight) and the moon is above the horizon.
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search_start = target_utc - timedelta(hours=24)
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search_end = target_utc + timedelta(hours=24)
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intervals = _dark_moon_intervals(search_start, search_end, moon_phase)
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if not intervals:
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print('no dark-sky + moon window in ±24h of phase — skipping')
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_notify(
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f'{spec["emoji"]} {spec["label"]} {target_utc.strftime("%B %Y")} — skipped',
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'No dark-sky + moon-above-horizon window found near the phase moment.',
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)
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return 0
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total_h = sum((e - s).total_seconds() / 3600 for s, e in intervals)
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print(f'dark+moon window: {len(intervals)} segment(s), {total_h:.1f}h total')
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for s, e in intervals:
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print(f' {_format_local(s)} -> {_format_local(e)}')
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# Collect east frames that fall inside those intervals
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search_dates: list[str] = []
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d = search_start.astimezone(tz).date()
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while d <= search_end.astimezone(tz).date():
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search_dates.append(d.strftime('%Y-%m-%d'))
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d += timedelta(days=1)
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all_frames = _candidate_frames(cam, search_dates)
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dark_frames = [
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(p, dt) for p, dt in all_frames
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if any(s <= dt <= e for s, e in intervals)
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]
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print(f'east frames in dark+moon window: {len(dark_frames)}')
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# Sort by proximity to exact phase moment so the first clear frame we find
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# is the one temporally closest to the moon being precisely full/quarter.
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dark_frames.sort(key=lambda x: abs(x[1] - target_utc))
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best_frame: str | None = None
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best_dt: datetime | None = None
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for fpath, fdt in dark_frames:
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det = detect_moon(fpath)
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if det is not None and det.quality >= MIN_QUALITY:
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best_frame = fpath
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best_dt = fdt
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offset_min = int((fdt - target_utc).total_seconds() / 60)
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print(f'best frame: {pathlib.Path(fpath).name} quality={det.quality:.3f} '
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f'time={_format_local(fdt)} offset={offset_min:+d} min from exact phase')
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break
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if best_frame is None:
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checked = len(dark_frames)
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print(f'no clear moon in {checked} dark-window frame(s) — skipping (overcast)')
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_notify(
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f'{spec["emoji"]} {spec["label"]} {target_utc.strftime("%B %Y")} — skipped',
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f'No clear moon detection in {checked} frame(s) during the dark+moon window.',
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)
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return 0
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illum_pct = round(moon_phase.illumination(best_dt) * 100)
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print(f'illumination at detection: {illum_pct}%')
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if dry_run:
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print(f'dry-run: would post NASA image for {best_dt.isoformat()} ({illum_pct}% lit)')
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return 0
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return _render_and_post(
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phase, spec, target_utc, best_dt,
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cam, dry_run, no_upload, out_path,
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witness_text=f'sky-cam {cam} — {illum_pct}% lit — {_format_local(best_dt)}',
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)
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def _render_and_post(phase, spec, target_utc, when_utc, cam,
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dry_run, no_upload, out_path, witness_text):
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if out_path is None:
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out_dir = pathlib.Path(MOVIES_DIR) / cam / _output_subdir(phase)
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out_dir.mkdir(parents=True, exist_ok=True)
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out_path = str(out_dir / _output_filename(phase, target_utc))
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import moon_dialamoon
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import moon_phase as _mp
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try:
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nasa_path = moon_dialamoon.fetch_for_time(when_utc)
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except Exception as e:
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msg = (
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f'NASA SVS Dial-a-Moon fetch failed for '
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f'{when_utc.strftime("%Y-%m-%dT%HZ")}: {e}'
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)
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_notify(f'{spec["emoji"]} {spec["label"]} — dial-a-moon fetch failed', msg)
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print(msg, file=sys.stderr)
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return 4
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print(f'dial-a-moon: {nasa_path}')
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illum_pct = round(_mp.illumination(when_utc) * 100)
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from moon_composite import render_phase_closeup
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caption = (
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f"{spec['label']} — {illum_pct}% lit — {target_utc.strftime('%B %Y')} — "
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f"{witness_text} — NASA SVS Dial-a-Moon"
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)
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render_phase_closeup(
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str(nasa_path), out_path,
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output_size=(OUT_W, OUT_H), moon_height_pct=MOON_PCT,
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caption=caption,
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when_utc=when_utc,
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)
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print(f'wrote {out_path}')
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if no_upload:
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_notify(
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f'{spec["emoji"]} {spec["label"]} {target_utc.strftime("%B %Y")} (built, not posted)',
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f'{out_path} — {witness_text}',
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)
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return 0
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posted = _post_to_mattermost(
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out_path,
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f"{spec['emoji']} {spec['label']} — {target_utc.strftime('%B %Y')}\n"
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f"sky-cam {cam} {witness_text}.\n"
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f"Surface render from NASA SVS Dial-a-Moon for that hour.",
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)
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if posted:
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_notify(
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f'{spec["emoji"]} {spec["label"]} {target_utc.strftime("%B %Y")} posted',
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f'{witness_text} — {out_path}',
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)
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else:
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_notify(
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f'FAILED: {spec["emoji"]} {spec["label"]} {target_utc.strftime("%B %Y")} upload',
|
|
f'Image built at {out_path} but Mattermost upload failed.',
|
|
)
|
|
return 0
|
|
|
|
|
|
def auto_run(cam: str, dry_run: bool, no_upload: bool) -> int:
|
|
"""Daily check: run any phase whose post-day equals today (UTC)."""
|
|
import moon_phase
|
|
today_utc = datetime.now(timezone.utc).date()
|
|
ran_any = False
|
|
rc = 0
|
|
for phase, spec in PHASE_SPEC.items():
|
|
if CONF.get(spec['enabled_key'], 'true').lower() == 'false':
|
|
print(f'-- {phase}: {spec["enabled_key"]}=false → skip')
|
|
continue
|
|
events = moon_phase.phase_events_in_range(
|
|
datetime.combine(today_utc - timedelta(days=45), datetime.min.time(), tzinfo=timezone.utc),
|
|
datetime.now(timezone.utc),
|
|
spec['index'])
|
|
if not events:
|
|
continue
|
|
last_event = events[-1]
|
|
days_since = (today_utc - last_event.date()).days
|
|
if days_since == spec['post_delay']:
|
|
print(f'== running {phase} (last event {last_event.date()}, +{spec["post_delay"]} days = today) ==')
|
|
sub = run_phase(phase, last_event, cam, dry_run, no_upload, None)
|
|
rc = rc or sub
|
|
ran_any = True
|
|
else:
|
|
print(f'-- {phase}: last {last_event.date()}, days_since={days_since}, post_delay={spec["post_delay"]} → skip')
|
|
if not ran_any:
|
|
print('no phase scheduled for today')
|
|
return rc
|
|
|
|
|
|
def main():
|
|
p = argparse.ArgumentParser()
|
|
p.add_argument('--phase', choices=list(PHASE_SPEC.keys()),
|
|
help='Run a single phase regardless of schedule')
|
|
p.add_argument('--target', help='Override phase event UTC, ISO 8601 (requires --phase)')
|
|
p.add_argument('--cam', default=SUNRISE_CAM)
|
|
p.add_argument('--dry-run', action='store_true')
|
|
p.add_argument('--no-upload', action='store_true')
|
|
p.add_argument('--out', help='Override output path (requires --phase)')
|
|
args = p.parse_args()
|
|
|
|
if args.phase:
|
|
target = None
|
|
if args.target:
|
|
target = datetime.fromisoformat(args.target.replace('Z', '+00:00'))
|
|
return run_phase(args.phase, target, args.cam, args.dry_run, args.no_upload, args.out)
|
|
return auto_run(args.cam, args.dry_run, args.no_upload)
|
|
|
|
|
|
if __name__ == '__main__':
|
|
sys.exit(main())
|