OBSERVATORY ALMANAC · NOCTURNAL DISPATCH

Tonight under the Sky

16.39°S, 49.98°WAmerica/Sao_Paulo

Daylight+35.5°

15:48:38

Fri, Oct 23, 2026

PHOTOMETRIC TWILIGHT SPECTRUM8h 56m of true darkness · 11h 25m total night

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

TRUE DARK SKY WINDOW

Sunset18:21

Civil Dusk18:43

Nautical19:09

Full Dark19:35

Nadir00:04

Dark Ends04:32

Nautical04:58

Civil Dawn05:24

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-4.8°

DISTANCE379,793 km

Moonrise16:08

Moonset04:20

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	34.9°	259°	Libra	05:34	11:57	18:20	Naked Eye
Jupiter♃	Below Horizon	-2.0	-30.5°	277°	Leo	02:07	07:55	13:39	Naked Eye
Saturn♄	Below Horizon	0.3	-14.9°	93°	Pisces	16:50	22:50	04:54	Naked Eye
Mars♂	Below Horizon	1.0	-39.2°	280°	Cancer	01:38	07:20	13:01	Naked Eye
Mercury☿	Optimal Visibility	0.4	55.0°	257°	Libra	06:54	13:22	19:49	Binoculars
Uranus♅	Below Horizon	5.6	-69.1°	74°	Taurus	20:45	02:21	08:01	Binoculars
Neptune♆	Below Horizon	7.8	-7.2°	93°	Pisces	16:18	22:20	04:26	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

RISES16:08

BEST TIME22:16N · 69° high

SETS04:20

Reaches about 69° above the horizon at its highest point.Waxing Gibbous (93% illuminated). Minimal Lunar Glare.

JupiterNaked Eye · High in the sky

RISES02:07

BEST TIME07:55N · 59° high

SETS13:39

Reaches about 59° above the horizon at its highest point.Bright golden disc; four Galilean moons easily seen in 7x50 binoculars.

SaturnNaked Eye · High in the sky

RISES16:50

BEST TIME22:50N · 72° high

SETS04:54

Reaches about 72° above the horizon at its highest point.Pale amber jewel; majestic ring system visible in any 60mm telescope.

VenusNaked Eye · High in the sky

RISES05:34

BEST TIME11:57S · 88° high

SETS18:20

Reaches about 88° above the horizon at its highest point.Brilliant dazzling beacon; visible crescent phase in small telescope.

MarsNaked Eye · High in the sky

RISES01:38

BEST TIME07:20N · 56° high

SETS13:01

Reaches about 56° 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.