OBSERVATORY ALMANAC · NOCTURNAL DISPATCH

Tonight under the Sky

18.48°S, 43.65°WAmerica/Sao_Paulo

Daylight+53.9°

14:06:09

Fri, Oct 23, 2026

PHOTOMETRIC TWILIGHT SPECTRUM8h 50m of true darkness · 11h 21m total night

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

TRUE DARK SKY WINDOW

Sunset17:58

Civil Dusk18:20

Nautical18:46

Full Dark19:13

Nadir23:38

Dark Ends04:03

Nautical04:30

Civil Dawn04:56

Sunrise05:19

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-22.3°

DISTANCE380,176 km

Moonrise15:42

Moonset03:17

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	53.5°	264°	Libra	05:06	11:32	17:58	Naked Eye
Jupiter♃	Below Horizon	-2.0	-12.5°	281°	Leo	01:44	07:30	13:12	Naked Eye
Saturn♄	Below Horizon	0.3	-33.1°	101°	Pisces	16:25	22:25	04:28	Naked Eye
Mars♂	Below Horizon	1.0	-21.4°	282°	Cancer	01:16	06:55	12:32	Naked Eye
Mercury☿	Optimal Visibility	0.4	73.5°	259°	Libra	06:25	12:56	19:27	Binoculars
Uranus♅	Below Horizon	5.6	-86.9°	36°	Taurus	20:24	01:56	07:32	Binoculars
Neptune♆	Below Horizon	7.8	-25.5°	100°	Pisces	15:53	21:55	04:01	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

RISES15:42

BEST TIME21:50N · 67° high

SETS03:17

Reaches about 67° above the horizon at its highest point.Waxing Gibbous (92% illuminated). Minimal Lunar Glare.

JupiterNaked Eye · High in the sky

RISES01:44

BEST TIME07:30N · 57° high

SETS13:12

Reaches about 57° above the horizon at its highest point.Bright golden disc; four Galilean moons easily seen in 7x50 binoculars.

SaturnNaked Eye · High in the sky

RISES16:25

BEST TIME22:25N · 70° high

SETS04:28

Reaches about 70° above the horizon at its highest point.Pale amber jewel; majestic ring system visible in any 60mm telescope.

VenusNaked Eye · High in the sky

RISES05:06

BEST TIME11:32N · 90° high

SETS17:58

Reaches about 90° above the horizon at its highest point.Brilliant dazzling beacon; visible crescent phase in small telescope.

MarsNaked Eye · High in the sky

RISES01:16

BEST TIME06:55N · 54° high

SETS12:32

Reaches about 54° 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.