OBSERVATORY ALMANAC · NOCTURNAL DISPATCH

Tonight under the Sky

25.90°S, 50.83°WAmerica/Sao_Paulo

Daylight+67.4°

13:21:56

Fri, Oct 23, 2026

PHOTOMETRIC TWILIGHT SPECTRUM8h 25m of true darkness · 11h 6m total night

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

TRUE DARK SKY WINDOW

Sunset18:34

Civil Dusk18:58

Nautical19:26

Full Dark19:54

Nadir00:07

Dark Ends04:20

Nautical04:48

Civil Dawn05:16

Sunrise05:40

LIVE REAL-TIME OBSERVATION

SunsetSunrise

LOCAL SKY PLANISPHERE · STEREOGRAPHIC PROJECTION

All-Sky Nocturnal Dome

Click any body to inspect telemetry

LUNAR EPHEMERISWaxing Gibbous

ILLUMINATION92%

ALTITUDE-36.9°

DISTANCE380,342 km

Moonrise16:13

Moonset03:47

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	69.6°	289°	Libra	05:23	12:01	18:38	Naked Eye
Jupiter♃	Rising / Setting	-2.0	1.9°	287°	Leo	02:25	07:58	13:32	Naked Eye
Saturn♄	Below Horizon	0.3	-46.8°	119°	Pisces	16:54	22:53	04:56	Naked Eye
Mars♂	Below Horizon	1.0	-6.7°	286°	Cancer	01:58	07:24	12:50	Naked Eye
Mercury☿	Optimal Visibility	0.4	85.0°	10°	Libra	06:40	13:25	20:10	Binoculars
Uranus♅	Below Horizon	5.6	-74.2°	255°	Taurus	21:05	02:28	07:47	Binoculars
Neptune♆	Below Horizon	7.8	-39.6°	115°	Pisces	16:21	22:23	04:30	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

RISES16:13

BEST TIME22:20N · 60° high

SETS03:47

Reaches about 60° above the horizon at its highest point.Waxing Gibbous (92% illuminated). Minimal Lunar Glare.

JupiterNaked Eye · High in the sky

RISES02:25

BEST TIME07:58N · 50° high

SETS13:32

Reaches about 50° above the horizon at its highest point.Bright golden disc; four Galilean moons easily seen in 7x50 binoculars.

SaturnNaked Eye · High in the sky

RISES16:54

BEST TIME22:53N · 63° high

SETS04:56

Reaches about 63° above the horizon at its highest point.Pale amber jewel; majestic ring system visible in any 60mm telescope.

VenusNaked Eye · High in the sky

RISES05:23

BEST TIME12:01N · 82° high

SETS18:38

Reaches about 82° 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 TIME07:24N · 46° high

SETS12:50

Reaches about 46° 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.