OBSERVATORY ALMANAC · NOCTURNAL DISPATCH

Tonight under the Sky

6.66°S, 39.47°WAmerica/Sao_Paulo

Daylight+28.4°

15:31:26

Fri, Oct 23, 2026

PHOTOMETRIC TWILIGHT SPECTRUM9h 20m of true darkness · 11h 42m total night

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

TRUE DARK SKY WINDOW

Sunset17:31

Civil Dusk17:52

Nautical18:17

Full Dark18:42

Nadir23:22

Dark Ends04:02

Nautical04:27

Civil Dawn04:51

Sunrise05:13

LIVE REAL-TIME OBSERVATION

SunsetSunrise

LOCAL SKY PLANISPHERE · STEREOGRAPHIC PROJECTION

All-Sky Nocturnal Dome

Click any body to inspect telemetry

LUNAR EPHEMERISWaxing Gibbous

ILLUMINATION93%

ALTITUDE1.5°

DISTANCE379,857 km

Moonrise15:23

Moonset03:41

HorizonAbove

LUNAR INTERFERENCE INDEX2% · Minimal Lunar Glare

Sky background remains dark; faint nebulae and distant galaxies are distinct.

ATMOSPHERIC SEEING & CLOUD PROFILETonight's Index

41/100

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♀	Visible Low	-4.3	26.6°	253°	Libra	05:06	11:15	17:25	Naked Eye
Jupiter♃	Below Horizon	-2.0	-34.9°	283°	Leo	01:15	07:13	13:08	Naked Eye
Saturn♄	Below Horizon	0.3	-9.0°	90°	Pisces	16:07	22:08	04:13	Naked Eye
Mars♂	Below Horizon	1.0	-42.8°	288°	Cancer	00:43	06:38	12:32	Naked Eye
Mercury☿	Optimal Visibility	0.4	46.1°	247°	Libra	06:28	12:40	18:51	Binoculars
Uranus♅	Below Horizon	5.6	-59.5°	59°	Taurus	19:48	01:39	07:34	Binoculars
Neptune♆	Below Horizon	7.8	-1.4°	91°	Pisces	15:37	21:38	03:44	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

RISES15:23

BEST TIME21:33N · 79° high

SETS03:41

Reaches about 79° above the horizon at its highest point.Waxing Gibbous (93% illuminated). Minimal Lunar Glare.

JupiterNaked Eye · High in the sky

RISES01:15

BEST TIME07:13N · 69° high

SETS13:08

Reaches about 69° above the horizon at its highest point.Bright golden disc; four Galilean moons easily seen in 7x50 binoculars.

SaturnNaked Eye · High in the sky

RISES16:07

BEST TIME22:08N · 82° high

SETS04:13

Reaches about 82° 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 TIME11:15S · 79° high

SETS17:25

Reaches about 79° above the horizon at its highest point.Brilliant dazzling beacon; visible crescent phase in small telescope.

MarsNaked Eye · High in the sky

RISES00:43

BEST TIME06:38N · 65° high

SETS12:32

Reaches about 65° 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.