OBSERVATORY ALMANAC · NOCTURNAL DISPATCH

Tonight under the Sky

23.03°S, 47.59°WAmerica/Sao_Paulo

Daylight+36.8°

15:33:34

Fri, Oct 23, 2026

PHOTOMETRIC TWILIGHT SPECTRUM8h 36m of true darkness · 11h 12m total night

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

TRUE DARK SKY WINDOW

Sunset18:18

Civil Dusk18:41

Nautical19:08

Full Dark19:36

Nadir23:54

Dark Ends04:12

Nautical04:40

Civil Dawn05:07

Sunrise05:30

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-6.0°

DISTANCE379,849 km

Moonrise15:59

Moonset03:34

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	37.1°	264°	Libra	05:15	11:48	18:20	Naked Eye
Jupiter♃	Below Horizon	-2.0	-29.9°	274°	Leo	02:05	07:45	13:22	Naked Eye
Saturn♄	Below Horizon	0.3	-15.7°	96°	Pisces	16:41	22:40	04:43	Naked Eye
Mars♂	Below Horizon	1.0	-38.8°	275°	Cancer	01:38	07:11	12:41	Naked Eye
Mercury☿	Optimal Visibility	0.4	57.3°	267°	Libra	06:33	13:12	19:51	Binoculars
Uranus♅	Below Horizon	5.6	-71.3°	93°	Taurus	20:47	02:11	07:40	Binoculars
Neptune♆	Below Horizon	7.8	-8.1°	94°	Pisces	16:08	22:11	04:17	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

RISES15:59

BEST TIME22:06N · 63° high

SETS03:34

Reaches about 63° above the horizon at its highest point.Waxing Gibbous (93% illuminated). Minimal Lunar Glare.

JupiterNaked Eye · High in the sky

RISES02:05

BEST TIME07:45N · 53° high

SETS13:22

Reaches about 53° above the horizon at its highest point.Bright golden disc; four Galilean moons easily seen in 7x50 binoculars.

SaturnNaked Eye · High in the sky

RISES16:41

BEST TIME22:40N · 66° high

SETS04:43

Reaches about 66° above the horizon at its highest point.Pale amber jewel; majestic ring system visible in any 60mm telescope.

VenusNaked Eye · High in the sky

RISES05:15

BEST TIME11:48N · 85° high

SETS18:20

Reaches about 85° above the horizon at its highest point.Brilliant dazzling beacon; visible crescent phase in small telescope.

MarsNaked Eye · High in the sky

RISES01:38

BEST TIME07:11N · 49° high

SETS12:41

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.