OBSERVATORY ALMANAC · NOCTURNAL DISPATCH

Tonight under the Sky

27.11°S, 49.38°WAmerica/Sao_Paulo

Daylight+34.1°

15:51:36

Fri, Oct 23, 2026

PHOTOMETRIC TWILIGHT SPECTRUM8h 20m of true darkness · 11h 3m total night

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

TRUE DARK SKY WINDOW

Sunset18:29

Civil Dusk18:53

Nautical19:22

Full Dark19:51

Nadir00:01

Dark Ends04:11

Nautical04:40

Civil Dawn05:09

Sunrise05:33

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-3.7°

DISTANCE379,782 km

Moonrise16:08

Moonset04:13

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	35.0°	266°	Libra	05:15	11:55	18:34	Naked Eye
Jupiter♃	Below Horizon	-2.0	-32.5°	270°	Leo	02:17	07:53	13:24	Naked Eye
Saturn♄	Below Horizon	0.3	-12.9°	95°	Pisces	16:49	22:47	04:50	Naked Eye
Mars♂	Below Horizon	1.0	-41.5°	270°	Cancer	01:52	07:18	12:42	Naked Eye
Mercury☿	Optimal Visibility	0.4	54.8°	272°	Libra	06:32	13:19	20:06	Binoculars
Uranus♅	Below Horizon	5.6	-68.3°	102°	Taurus	21:02	02:19	07:39	Binoculars
Neptune♆	Below Horizon	7.8	-5.4°	94°	Pisces	16:15	22:18	04:24	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 TIME22:14N · 59° high

SETS04:13

Reaches about 59° above the horizon at its highest point.Waxing Gibbous (93% illuminated). Minimal Lunar Glare.

JupiterNaked Eye · High in the sky

RISES02:17

BEST TIME07:53N · 49° high

SETS13:24

Reaches about 49° above the horizon at its highest point.Bright golden disc; four Galilean moons easily seen in 7x50 binoculars.

SaturnNaked Eye · High in the sky

RISES16:49

BEST TIME22:47N · 62° high

SETS04:50

Reaches about 62° above the horizon at its highest point.Pale amber jewel; majestic ring system visible in any 60mm telescope.

VenusNaked Eye · High in the sky

RISES05:15

BEST TIME11:55N · 81° high

SETS18:34

Reaches about 81° above the horizon at its highest point.Brilliant dazzling beacon; visible crescent phase in small telescope.

MarsNaked Eye · Good height

RISES01:52

BEST TIME07:18N · 45° high

SETS12:42

Reaches about 45° 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.