OBSERVATORY ALMANAC · NOCTURNAL DISPATCH

Tonight under the Sky

21.37°S, 50.31°WAmerica/Sao_Paulo

Daylight+71.7°

13:10:23

Fri, Oct 23, 2026

PHOTOMETRIC TWILIGHT SPECTRUM8h 41m of true darkness · 11h 15m total night

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

TRUE DARK SKY WINDOW

Sunset18:27

Civil Dusk18:50

Nautical19:17

Full Dark19:44

Nadir00:05

Dark Ends04:25

Nautical04:53

Civil Dawn05:20

Sunrise05:43

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-40.2°

DISTANCE380,385 km

Moonrise16:10

Moonset03:45

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	72.8°	278°	Libra	05:28	11:59	18:29	Naked Eye
Jupiter♃	Rising / Setting	-2.0	5.2°	288°	Leo	02:18	07:56	13:35	Naked Eye
Saturn♄	Below Horizon	0.3	-50.8°	116°	Pisces	16:52	22:51	04:54	Naked Eye
Mars♂	Below Horizon	1.0	-3.3°	288°	Cancer	01:49	07:22	12:55	Naked Eye
Mercury☿	Optimal Visibility	0.4	86.9°	83°	Libra	06:47	13:23	19:59	Binoculars
Uranus♅	Below Horizon	5.6	-72.5°	272°	Taurus	20:55	02:26	07:54	Binoculars
Neptune♆	Below Horizon	7.8	-43.5°	113°	Pisces	16:19	22:21	04:27	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

RISES16:10

BEST TIME22:17N · 64° high

SETS03:45

Reaches about 64° above the horizon at its highest point.Waxing Gibbous (92% illuminated). Minimal Lunar Glare.

JupiterNaked Eye · High in the sky

RISES02:18

BEST TIME07:56N · 54° high

SETS13:35

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

RISES16:52

BEST TIME22:51N · 67° high

SETS04:54

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

RISES05:28

BEST TIME11:59N · 87° high

SETS18:29

Reaches about 87° above the horizon at its highest point.Brilliant dazzling beacon; visible crescent phase in small telescope.

MarsNaked Eye · High in the sky

RISES01:49

BEST TIME07:22N · 51° high

SETS12:55

Reaches about 51° 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.