OBSERVATORY ALMANAC · NOCTURNAL DISPATCH

Tonight under the Sky

18.71°S, 49.92°WAmerica/Sao_Paulo

Daylight+47.3°

14:59:06

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

Sunset18:23

Civil Dusk18:45

Nautical19:12

Full Dark19:38

Nadir00:03

Dark Ends04:28

Nautical04:55

Civil Dawn05:21

Sunrise05:44

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-16.1°

DISTANCE379,978 km

Moonrise16:08

Moonset03:43

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	46.9°	263°	Libra	05:31	11:57	18:23	Naked Eye
Jupiter♃	Below Horizon	-2.0	-19.1°	279°	Leo	02:10	07:55	13:36	Naked Eye
Saturn♄	Below Horizon	0.3	-26.5°	98°	Pisces	16:50	22:50	04:53	Naked Eye
Mars♂	Below Horizon	1.0	-28.0°	281°	Cancer	01:41	07:20	12:57	Naked Eye
Mercury☿	Optimal Visibility	0.4	67.0°	260°	Libra	06:50	13:21	19:53	Binoculars
Uranus♅	Below Horizon	5.6	-81.2°	73°	Taurus	20:49	02:21	07:57	Binoculars
Neptune♆	Below Horizon	7.8	-18.8°	97°	Pisces	16:18	22:20	04:26	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 TIME22:16N · 67° high

SETS03:43

Reaches about 67° above the horizon at its highest point.Waxing Gibbous (93% illuminated). Minimal Lunar Glare.

JupiterNaked Eye · High in the sky

RISES02:10

BEST TIME07:55N · 57° high

SETS13:36

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

RISES16:50

BEST TIME22:50N · 70° high

SETS04:53

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

RISES05:31

BEST TIME11:57N · 89° high

SETS18:23

Reaches about 89° above the horizon at its highest point.Brilliant dazzling beacon; visible crescent phase in small telescope.

MarsNaked Eye · High in the sky

RISES01:41

BEST TIME07:20N · 53° high

SETS12:57

Reaches about 53° 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.