OBSERVATORY ALMANAC · NOCTURNAL DISPATCH

Tonight under the Sky

24.43°S, 51.95°WAmerica/Sao_Paulo

Daylight+33.6°

16:04:49

Fri, Oct 23, 2026

PHOTOMETRIC TWILIGHT SPECTRUM8h 31m of true darkness · 11h 9m total night

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

TRUE DARK SKY WINDOW

Sunset18:37

Civil Dusk19:00

Nautical19:28

Full Dark19:56

Nadir00:11

Dark Ends04:27

Nautical04:55

Civil Dawn05:23

Sunrise05:46

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-3.1°

DISTANCE379,732 km

Moonrise16:18

Moonset04:25

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	34.1°	264°	Libra	05:30	12:05	18:40	Naked Eye
Jupiter♃	Below Horizon	-2.0	-33.1°	272°	Leo	02:24	08:03	13:38	Naked Eye
Saturn♄	Below Horizon	0.3	-12.4°	94°	Pisces	16:59	22:58	05:01	Naked Eye
Mars♂	Below Horizon	1.0	-42.1°	272°	Cancer	01:58	07:28	12:57	Naked Eye
Mercury☿	Optimal Visibility	0.4	54.2°	268°	Libra	06:48	13:30	20:11	Binoculars
Uranus♅	Below Horizon	5.6	-68.0°	94°	Taurus	21:07	02:29	07:55	Binoculars
Neptune♆	Below Horizon	7.8	-4.8°	93°	Pisces	16:26	22:28	04:34	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

RISES16:18

BEST TIME22:24N · 61° high

SETS04:25

Reaches about 61° above the horizon at its highest point.Waxing Gibbous (93% illuminated). Minimal Lunar Glare.

JupiterNaked Eye · High in the sky

RISES02:24

BEST TIME08:03N · 51° high

SETS13:38

Reaches about 51° above the horizon at its highest point.Bright golden disc; four Galilean moons easily seen in 7x50 binoculars.

SaturnNaked Eye · High in the sky

RISES16:59

BEST TIME22:58N · 64° high

SETS05:01

Reaches about 64° above the horizon at its highest point.Pale amber jewel; majestic ring system visible in any 60mm telescope.

VenusNaked Eye · High in the sky

RISES05:30

BEST TIME12:05N · 84° high

SETS18:40

Reaches about 84° above the horizon at its highest point.Brilliant dazzling beacon; visible crescent phase in small telescope.

MarsNaked Eye · High in the sky

RISES01:58

BEST TIME07:28N · 48° high

SETS12:57

Reaches about 48° 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.