OBSERVATORY ALMANAC · NOCTURNAL DISPATCH

Tonight under the Sky

15.56°S, 49.64°WAmerica/Sao_Paulo

Daylight+34.4°

15:51:58

Fri, Oct 23, 2026

PHOTOMETRIC TWILIGHT SPECTRUM8h 59m of true darkness · 11h 26m total night

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

TRUE DARK SKY WINDOW

Sunset18:19

Civil Dusk18:41

Nautical19:07

Full Dark19:33

Nadir00:02

Dark Ends04:32

Nautical04:58

Civil Dawn05:23

Sunrise05:45

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-3.7°

DISTANCE379,780 km

Moonrise16:06

Moonset04:19

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	33.6°	258°	Libra	05:34	11:56	18:17	Naked Eye
Jupiter♃	Below Horizon	-2.0	-31.6°	277°	Leo	02:05	07:54	13:39	Naked Eye
Saturn♄	Below Horizon	0.3	-13.8°	93°	Pisces	16:49	22:48	04:52	Naked Eye
Mars♂	Below Horizon	1.0	-40.2°	280°	Cancer	01:36	07:19	13:00	Naked Eye
Mercury☿	Optimal Visibility	0.4	53.7°	256°	Libra	06:54	13:20	19:46	Binoculars
Uranus♅	Below Horizon	5.6	-67.8°	72°	Taurus	20:43	02:20	08:01	Binoculars
Neptune♆	Below Horizon	7.8	-6.1°	92°	Pisces	16:17	22:19	04:25	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

RISES16:06

BEST TIME22:15N · 70° high

SETS04:19

Reaches about 70° above the horizon at its highest point.Waxing Gibbous (93% illuminated). Minimal Lunar Glare.

JupiterNaked Eye · High in the sky

RISES02:05

BEST TIME07:54N · 60° high

SETS13:39

Reaches about 60° above the horizon at its highest point.Bright golden disc; four Galilean moons easily seen in 7x50 binoculars.

SaturnNaked Eye · High in the sky

RISES16:49

BEST TIME22:48N · 73° high

SETS04:52

Reaches about 73° above the horizon at its highest point.Pale amber jewel; majestic ring system visible in any 60mm telescope.

VenusNaked Eye · High in the sky

RISES05:34

BEST TIME11:56S · 88° high

SETS18:17

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

RISES01:36

BEST TIME07:19N · 57° high

SETS13:00

Reaches about 57° 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.