OBSERVATORY ALMANAC · NOCTURNAL DISPATCH

Tonight under the Sky

23.60°S, 46.92°WAmerica/Sao_Paulo

Daylight+51.0°

14:28:13

Fri, Oct 23, 2026

PHOTOMETRIC TWILIGHT SPECTRUM8h 34m of true darkness · 11h 11m total night

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

TRUE DARK SKY WINDOW

Sunset18:16

Civil Dusk18:39

Nautical19:07

Full Dark19:34

Nadir23:51

Dark Ends04:08

Nautical04:36

Civil Dawn05:03

Sunrise05:27

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-19.8°

DISTANCE380,093 km

Moonrise15:57

Moonset03:31

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	51.6°	270°	Libra	05:11	11:45	18:19	Naked Eye
Jupiter♃	Below Horizon	-2.0	-15.5°	279°	Leo	02:03	07:43	13:19	Naked Eye
Saturn♄	Below Horizon	0.3	-30.0°	103°	Pisces	16:39	22:38	04:41	Naked Eye
Mars♂	Below Horizon	1.0	-24.5°	280°	Cancer	01:36	07:08	12:38	Naked Eye
Mercury☿	Optimal Visibility	0.4	71.7°	275°	Libra	06:29	13:09	19:50	Binoculars
Uranus♅	Below Horizon	5.6	-85.2°	123°	Taurus	20:46	02:09	07:36	Binoculars
Neptune♆	Below Horizon	7.8	-22.5°	101°	Pisces	16:06	22:08	04:14	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

RISES15:57

BEST TIME22:03N · 62° high

SETS03:31

Reaches about 62° above the horizon at its highest point.Waxing Gibbous (93% illuminated). Minimal Lunar Glare.

JupiterNaked Eye · High in the sky

RISES02:03

BEST TIME07:43N · 52° high

SETS13:19

Reaches about 52° above the horizon at its highest point.Bright golden disc; four Galilean moons easily seen in 7x50 binoculars.

SaturnNaked Eye · High in the sky

RISES16:39

BEST TIME22:38N · 65° high

SETS04:41

Reaches about 65° above the horizon at its highest point.Pale amber jewel; majestic ring system visible in any 60mm telescope.

VenusNaked Eye · High in the sky

RISES05:11

BEST TIME11:45N · 84° high

SETS18:19

Reaches about 84° above the horizon at its highest point.Brilliant dazzling beacon; visible crescent phase in small telescope.

MarsNaked Eye · High in the sky

RISES01:36

BEST TIME07:08N · 49° high

SETS12:38

Reaches about 49° 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.