OBSERVATORY ALMANAC · NOCTURNAL DISPATCH

Tonight under the Sky

26.64°S, 51.02°WAmerica/Sao_Paulo

Daylight+33.0°

16:03:25

Fri, Oct 23, 2026

PHOTOMETRIC TWILIGHT SPECTRUM8h 22m of true darkness · 11h 4m total night

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

TRUE DARK SKY WINDOW

Sunset18:35

Civil Dusk18:59

Nautical19:28

Full Dark19:57

Nadir00:08

Dark Ends04:19

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

ILLUMINATION93%

ALTITUDE-2.7°

DISTANCE379,738 km

Moonrise16:14

Moonset04:20

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	33.8°	265°	Libra	05:23	12:01	18:40	Naked Eye
Jupiter♃	Below Horizon	-2.0	-33.7°	270°	Leo	02:23	07:59	13:31	Naked Eye
Saturn♄	Below Horizon	0.3	-11.7°	95°	Pisces	16:55	22:54	04:57	Naked Eye
Mars♂	Below Horizon	1.0	-42.6°	270°	Cancer	01:58	07:25	12:50	Naked Eye
Mercury☿	Optimal Visibility	0.4	53.7°	270°	Libra	06:40	13:26	20:12	Binoculars
Uranus♅	Below Horizon	5.6	-67.2°	99°	Taurus	21:08	02:25	07:47	Binoculars
Neptune♆	Below Horizon	7.8	-4.2°	93°	Pisces	16:22	22:24	04:31	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

RISES16:14

BEST TIME22:20N · 59° high

SETS04:20

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

JupiterNaked Eye · High in the sky

RISES02:23

BEST TIME07:59N · 49° high

SETS13:31

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

RISES16:55

BEST TIME22:54N · 62° high

SETS04:57

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

RISES05:23

BEST TIME12:01N · 81° high

SETS18:40

Reaches about 81° 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 TIME07:25N · 45° high

SETS12:50

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.