OBSERVATORY ALMANAC · NOCTURNAL DISPATCH

Tonight under the Sky

20.24°S, 45.57°WAmerica/Sao_Paulo

Daylight+52.3°

14:19:29

Fri, Oct 23, 2026

PHOTOMETRIC TWILIGHT SPECTRUM8h 45m of true darkness · 11h 18m total night

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

TRUE DARK SKY WINDOW

Sunset18:07

Civil Dusk18:30

Nautical18:56

Full Dark19:23

Nadir23:46

Dark Ends04:08

Nautical04:35

Civil Dawn05:02

Sunrise05:25

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-20.9°

DISTANCE380,126 km

Moonrise15:50

Moonset03:25

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	52.3°	266°	Libra	05:11	11:40	18:08	Naked Eye
Jupiter♃	Below Horizon	-2.0	-14.2°	280°	Leo	01:54	07:37	13:17	Naked Eye
Saturn♄	Below Horizon	0.3	-31.5°	101°	Pisces	16:33	22:32	04:36	Naked Eye
Mars♂	Below Horizon	1.0	-23.1°	281°	Cancer	01:26	07:03	12:38	Naked Eye
Mercury☿	Optimal Visibility	0.4	72.4°	264°	Libra	06:30	13:04	19:38	Binoculars
Uranus♅	Below Horizon	5.6	-86.7°	76°	Taurus	20:34	02:03	07:37	Binoculars
Neptune♆	Below Horizon	7.8	-23.8°	100°	Pisces	16:01	22:03	04:08	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

RISES15:50

BEST TIME21:58N · 66° high

SETS03:25

Reaches about 66° above the horizon at its highest point.Waxing Gibbous (93% illuminated). Minimal Lunar Glare.

JupiterNaked Eye · High in the sky

RISES01:54

BEST TIME07:37N · 55° high

SETS13:17

Reaches about 55° above the horizon at its highest point.Bright golden disc; four Galilean moons easily seen in 7x50 binoculars.

SaturnNaked Eye · High in the sky

RISES16:33

BEST TIME22:32N · 68° high

SETS04:36

Reaches about 68° 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 TIME11:40N · 88° high

SETS18:08

Reaches about 88° above the horizon at its highest point.Brilliant dazzling beacon; visible crescent phase in small telescope.

MarsNaked Eye · High in the sky

RISES01:26

BEST TIME07:03N · 52° high

SETS12:38

Reaches about 52° 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.