OBSERVATORY ALMANAC · NOCTURNAL DISPATCH

Tonight under the Sky

21.68°S, 49.74°WAmerica/Sao_Paulo

Daylight+34.2°

15:53:51

Fri, Oct 23, 2026

PHOTOMETRIC TWILIGHT SPECTRUM8h 40m of true darkness · 11h 15m total night

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

TRUE DARK SKY WINDOW

Sunset18:25

Civil Dusk18:48

Nautical19:15

Full Dark19:42

Nadir00:03

Dark Ends04:23

Nautical04:50

Civil Dawn05:17

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

ILLUMINATION93%

ALTITUDE-3.5°

DISTANCE379,773 km

Moonrise16:08

Moonset04:17

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	34.3°	262°	Libra	05:26	11:56	18:27	Naked Eye
Jupiter♃	Below Horizon	-2.0	-32.5°	274°	Leo	02:12	07:54	13:32	Naked Eye
Saturn♄	Below Horizon	0.3	-13.1°	94°	Pisces	16:50	22:49	04:52	Naked Eye
Mars♂	Below Horizon	1.0	-41.4°	275°	Cancer	01:45	07:19	12:52	Naked Eye
Mercury☿	Optimal Visibility	0.4	54.5°	264°	Libra	06:44	13:21	19:57	Binoculars
Uranus♅	Below Horizon	5.6	-68.5°	88°	Taurus	20:53	02:20	07:51	Binoculars
Neptune♆	Below Horizon	7.8	-5.5°	93°	Pisces	16:17	22:19	04:25	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 TIME22:15N · 64° high

SETS04:17

Reaches about 64° above the horizon at its highest point.Waxing Gibbous (93% illuminated). Minimal Lunar Glare.

JupiterNaked Eye · High in the sky

RISES02:12

BEST TIME07:54N · 54° high

SETS13:32

Reaches about 54° 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 TIME22:49N · 67° high

SETS04:52

Reaches about 67° above the horizon at its highest point.Pale amber jewel; majestic ring system visible in any 60mm telescope.

VenusNaked Eye · High in the sky

RISES05:26

BEST TIME11:56N · 86° high

SETS18:27

Reaches about 86° above the horizon at its highest point.Brilliant dazzling beacon; visible crescent phase in small telescope.

MarsNaked Eye · High in the sky

RISES01:45

BEST TIME07:19N · 50° high

SETS12:52

Reaches about 50° 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.