OBSERVATORY ALMANAC · NOCTURNAL DISPATCH

Tonight under the Sky

29.55°S, 51.42°WAmerica/Sao_Paulo

Daylight+46.8°

14:59:15

Fri, Oct 23, 2026

PHOTOMETRIC TWILIGHT SPECTRUM8h 10m of true darkness · 10h 58m total night

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

TRUE DARK SKY WINDOW

Sunset18:40

Civil Dusk19:05

Nautical19:34

Full Dark20:04

Nadir00:09

Dark Ends04:14

Nautical04:44

Civil Dawn05:14

Sunrise05:38

LIVE REAL-TIME OBSERVATION

SunsetSunrise

LOCAL SKY PLANISPHERE · STEREOGRAPHIC PROJECTION

All-Sky Nocturnal Dome

Click any body to inspect telemetry

LUNAR EPHEMERISWaxing Gibbous

ILLUMINATION93%

ALTITUDE-16.5°

DISTANCE379,977 km

Moonrise16:17

Moonset03:50

HorizonBelow

LUNAR INTERFERENCE INDEX0% · Minimal Lunar Glare

Sky background remains dark; faint nebulae and distant galaxies are distinct.

ATMOSPHERIC SEEING & CLOUD PROFILETonight's Index

42/100

Fair Stargazing

Partial haze or lunar wash. Bright clusters, double stars, and prominent planets remain well visible.

CLOUD COVER15%

HUMIDITY50%

VISIBILITY18 km

DEW POINT10.8°C

PLANETARY EPHEMERIS & ALMANAC

Visible Planets Tonight

All times calibrated to America/Sao_Paulo

PLANET	STATUS	MAGNITUDE	ALTITUDE	AZIMUTH	CONSTELLATION	RISE	TRANSIT	SET	EQUIPMENT
Venus♀	Optimal Visibility	-4.3	48.3°	276°	Libra	05:19	12:03	18:46	Naked Eye
Jupiter♃	Below Horizon	-2.0	-19.2°	276°	Leo	02:29	08:01	13:29	Naked Eye
Saturn♄	Below Horizon	0.3	-25.7°	104°	Pisces	16:57	22:56	04:58	Naked Eye
Mars♂	Below Horizon	1.0	-28.2°	275°	Cancer	02:04	07:26	12:46	Naked Eye
Mercury☿	Optimal Visibility	0.4	67.6°	287°	Libra	06:35	13:27	20:19	Binoculars
Uranus♅	Below Horizon	5.6	-79.0°	140°	Taurus	21:15	02:27	07:43	Binoculars
Neptune♆	Below Horizon	7.8	-18.4°	102°	Pisces	16:23	22:26	04:32	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

RISES16:17

BEST TIME22:22N · 56° high

SETS03:50

Reaches about 56° above the horizon at its highest point.Waxing Gibbous (93% illuminated). Minimal Lunar Glare.

JupiterNaked Eye · High in the sky

RISES02:29

BEST TIME08:01N · 46° high

SETS13:29

Reaches about 46° above the horizon at its highest point.Bright golden disc; four Galilean moons easily seen in 7x50 binoculars.

SaturnNaked Eye · High in the sky

RISES16:57

BEST TIME22:56N · 59° high

SETS04:58

Reaches about 59° above the horizon at its highest point.Pale amber jewel; majestic ring system visible in any 60mm telescope.

VenusNaked Eye · High in the sky

RISES05:19

BEST TIME12:03N · 79° high

SETS18:46

Reaches about 79° above the horizon at its highest point.Brilliant dazzling beacon; visible crescent phase in small telescope.

MarsNaked Eye · Good height

RISES02:04

BEST TIME07:26N · 43° high

SETS12:46

Reaches about 43° 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.