OBSERVATORY ALMANAC · NOCTURNAL DISPATCH

Tonight under the Sky

16.61°S, 41.83°WAmerica/Sao_Paulo

Daylight+65.2°

13:12:02

Fri, Oct 23, 2026

PHOTOMETRIC TWILIGHT SPECTRUM8h 56m of true darkness · 11h 24m total night

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

TRUE DARK SKY WINDOW

Sunset17:49

Civil Dusk18:11

Nautical18:37

Full Dark19:03

Nadir23:31

Dark Ends03:59

Nautical04:25

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

ILLUMINATION92%

ALTITUDE-33.1°

DISTANCE380,379 km

Moonrise15:34

Moonset03:09

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	64.4°	263°	Libra	05:02	11:25	17:48	Naked Eye
Jupiter♃	Below Horizon	-2.0	-1.1°	285°	Leo	01:38	07:22	13:07	Naked Eye
Saturn♄	Below Horizon	0.3	-44.6°	105°	Pisces	16:18	22:17	04:21	Naked Eye
Mars♂	Below Horizon	1.0	-10.0°	286°	Cancer	01:06	06:48	12:28	Naked Eye
Mercury☿	Optimal Visibility	0.4	83.1°	230°	Libra	06:21	12:49	19:17	Binoculars
Uranus♅	Below Horizon	5.6	-79.7°	297°	Taurus	20:13	01:53	07:28	Binoculars
Neptune♆	Below Horizon	7.8	-36.9°	104°	Pisces	15:46	21:48	03:53	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

RISES15:34

BEST TIME21:42N · 69° high

SETS03:09

Reaches about 69° above the horizon at its highest point.Waxing Gibbous (92% illuminated). Minimal Lunar Glare.

JupiterNaked Eye · High in the sky

RISES01:38

BEST TIME07:22N · 59° high

SETS13:07

Reaches about 59° above the horizon at its highest point.Bright golden disc; four Galilean moons easily seen in 7x50 binoculars.

SaturnNaked Eye · High in the sky

RISES16:18

BEST TIME22:17N · 72° high

SETS04:21

Reaches about 72° above the horizon at its highest point.Pale amber jewel; majestic ring system visible in any 60mm telescope.

VenusNaked Eye · High in the sky

RISES05:02

BEST TIME11:25S · 89° high

SETS17:48

Reaches about 89° above the horizon at its highest point.Brilliant dazzling beacon; visible crescent phase in small telescope.

MarsNaked Eye · High in the sky

RISES01:06

BEST TIME06:48N · 56° high

SETS12:28

Reaches about 56° 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.