OBSERVATORY ALMANAC · NOCTURNAL DISPATCH

Tonight under the Sky

39.73°N, 118.44°EAsia/Shanghai

Deep Astronomical Night-61.6° (< −18°)

23:49:30

Fri, Oct 23, 2026

PHOTOMETRIC TWILIGHT SPECTRUM10h 9m of true darkness · 13h 9m total night

DaylightCivil (−6°)Nautical (−12°)Astro (−18°)Dark Sky (<−18°)

TRUE DARK SKY WINDOW

Sunset17:16

Civil Dusk17:43

Nautical18:15

Full Dark18:46

Nadir23:50

Dark Ends04:55

Nautical05:26

Civil Dawn05:57

Sunrise06:25

LIVE REAL-TIME OBSERVATION

SunsetSunrise

LOCAL SKY PLANISPHERE · STEREOGRAPHIC PROJECTION

All-Sky Nocturnal Dome

Click any body to inspect telemetry

LUNAR EPHEMERISWaxing Gibbous

ILLUMINATION92%

ALTITUDE41.7°

DISTANCE380,463 km

Moonrise15:33

Moonset04:00

HorizonAbove

LUNAR INTERFERENCE INDEX61% · Heavy Lunar Wash

Bright moonlight washes out deep sky targets. Focus on lunar craters and bright planets.

ATMOSPHERIC SEEING & CLOUD PROFILETonight's Index

70/100

Good Stargazing

Fine observing conditions. Open star clusters and nebulae will exhibit crisp structure.

CLOUD COVER15%

HUMIDITY50%

VISIBILITY18 km

DEW POINT10.8°C

PLANETARY EPHEMERIS & ALMANAC

Visible Planets Tonight

All times calibrated to Asia/Shanghai

PLANET	STATUS	MAGNITUDE	ALTITUDE	AZIMUTH	CONSTELLATION	RISE	TRANSIT	SET	EQUIPMENT
Venus♀	Below Horizon	-4.3	-68.1°	4°	Libra	06:41	11:40	16:45	Naked Eye
Jupiter♃	Below Horizon	-2.0	-10.4°	61°	Leo	00:48	07:39	14:34	Naked Eye
Saturn♄	Optimal Visibility	0.3	48.4°	207°	Pisces	16:31	22:38	04:45	Naked Eye
Mars♂	Below Horizon	1.0	-2.0°	64°	Cancer	00:01	07:06	14:13	Naked Eye
Mercury☿	Below Horizon	0.4	-64.6°	312°	Libra	08:18	13:10	17:58	Binoculars
Uranus♅	Optimal Visibility	5.6	54.7°	112°	Taurus	18:53	02:09	09:26	Binoculars
Neptune♆	Optimal Visibility	7.8	43.7°	216°	Pisces	16:08	22:08	04:09	Telescope

TONIGHT'S VIEWING SCHEDULE

When & Where to Look Tonight

A simple guide to when each object is above your horizon. No astronomy chart reading required.

BEST TIMEHighest in your sky

The MoonNaked Eye · High in the sky

RISES15:33

BEST TIME21:41S · 51° high

SETS04:00

Reaches about 51° above the horizon at its highest point.Waxing Gibbous (92% illuminated). Heavy Lunar Wash.

JupiterNaked Eye · High in the sky

RISES00:48

BEST TIME07:39S · 65° high

SETS14:34

Reaches about 65° above the horizon at its highest point.Bright golden disc; four Galilean moons easily seen in 7x50 binoculars.

SaturnNaked Eye · High in the sky

RISES16:31

BEST TIME22:38S · 52° high

SETS04:45

Reaches about 52° above the horizon at its highest point.Pale amber jewel; majestic ring system visible in any 60mm telescope.

VenusNaked Eye · Good height

RISES06:41

BEST TIME11:40S · 33° high

SETS16:45

Reaches about 33° above the horizon at its highest point.Brilliant dazzling beacon; visible crescent phase in small telescope.

MarsNaked Eye · High in the sky

RISES00:01

BEST TIME07:06S · 68° high

SETS14:13

Reaches about 68° above the horizon at its highest point.Distinctive crimson hue; polar ice cap discernible near opposition.

OBSERVING LOG & TARGET LIST

Tonight's Prime Deep-Sky Targets

0 / 6 targets logged tonight

M31 / NGC 224 · Andromeda

Andromeda Galaxy

Spiral Galaxy (2.5M ly)

Our galactic neighbor; visible as a ghostly oval smudge with dense radiant stellar core.

M45 · Taurus

The Pleiades (Seven Sisters)

Open Star Cluster

Breathtaking blue diamond cluster enshrouded in delicate interstellar reflection nebulosity.

M42 / NGC 1976 · Orion

Great Orion Nebula

Diffuse Emission Nebula

Star nursery harboring the brilliant Trapezium cluster with sprawling bat-wing filaments.

NGC 869 & NGC 884 · Perseus

The Double Cluster

Twin Open Clusters

Pair of spectacular shimmering jewel-boxes bursting with ruby supergiant stars.

M13 / NGC 6205 · Hercules

Great Globular Cluster in Hercules

Globular Cluster (300k stars)

Massive beehive of ancient stars packed tightly together into a blazing central ball.

M57 / NGC 6720 · Lyra

The Ring Nebula

Planetary Nebula

Delicate glowing smoke-ring left behind by a dying star 2,500 light-years away.