OBSERVATORY ALMANAC · NOCTURNAL DISPATCH

Tonight under the Sky

20.44°S, 48.01°WAmerica/Sao_Paulo

Daylight+27.4°

16:16:00

Fri, Oct 23, 2026

PHOTOMETRIC TWILIGHT SPECTRUM8h 44m of true darkness · 11h 17m total night

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

TRUE DARK SKY WINDOW

Sunset18:17

Civil Dusk18:40

Nautical19:06

Full Dark19:34

Nadir23:56

Dark Ends04:18

Nautical04:45

Civil Dawn05:12

Sunrise05:34

LIVE REAL-TIME OBSERVATION

SunsetSunrise

LOCAL SKY PLANISPHERE · STEREOGRAPHIC PROJECTION

All-Sky Nocturnal Dome

Click any body to inspect telemetry

LUNAR EPHEMERISWaxing Gibbous

ILLUMINATION93%

ALTITUDE2.8°

DISTANCE379,691 km

Moonrise16:01

Moonset04:10

HorizonAbove

LUNAR INTERFERENCE INDEX5% · Minimal Lunar Glare

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

ATMOSPHERIC SEEING & CLOUD PROFILETonight's Index

40/100

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♀	Visible Low	-4.3	27.4°	260°	Libra	05:21	11:49	18:18	Naked Eye
Jupiter♃	Below Horizon	-2.0	-39.3°	272°	Leo	02:04	07:47	13:27	Naked Eye
Saturn♄	Below Horizon	0.3	-6.3°	91°	Pisces	16:43	22:42	04:45	Naked Eye
Mars♂	Below Horizon	1.0	-48.1°	274°	Cancer	01:36	07:13	12:47	Naked Eye
Mercury☿	Optimal Visibility	0.4	47.6°	261°	Libra	06:39	13:14	19:48	Binoculars
Uranus♅	Below Horizon	5.6	-61.6°	83°	Taurus	20:44	02:13	07:46	Binoculars
Neptune♆	Rising / Setting	7.8	1.1°	90°	Pisces	16:10	22:12	04:18	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

RISES16:01

BEST TIME22:08N · 65° high

SETS04:10

Reaches about 65° above the horizon at its highest point.Waxing Gibbous (93% illuminated). Minimal Lunar Glare.

JupiterNaked Eye · High in the sky

RISES02:04

BEST TIME07:47N · 55° high

SETS13:27

Reaches about 55° above the horizon at its highest point.Bright golden disc; four Galilean moons easily seen in 7x50 binoculars.

SaturnNaked Eye · High in the sky

RISES16:43

BEST TIME22:42N · 68° high

SETS04:45

Reaches about 68° above the horizon at its highest point.Pale amber jewel; majestic ring system visible in any 60mm telescope.

VenusNaked Eye · High in the sky

RISES05:21

BEST TIME11:49N · 88° high

SETS18:18

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

RISES01:36

BEST TIME07:13N · 52° high

SETS12:47

Reaches about 52° 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.