OBSERVATORY ALMANAC · NOCTURNAL DISPATCH

Tonight under the Sky

19.48°S, 42.11°WAmerica/Sao_Paulo

Daylight+61.5°

13:26:30

Fri, Oct 23, 2026

PHOTOMETRIC TWILIGHT SPECTRUM8h 47m of true darkness · 11h 19m total night

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

TRUE DARK SKY WINDOW

Sunset17:53

Civil Dusk18:15

Nautical18:42

Full Dark19:08

Nadir23:32

Dark Ends03:56

Nautical04:23

Civil Dawn04:49

Sunrise05:12

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-29.7°

DISTANCE380,324 km

Moonrise15:36

Moonset03:11

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	61.5°	268°	Libra	04:59	11:26	17:53	Naked Eye
Jupiter♃	Below Horizon	-2.0	-4.9°	283°	Leo	01:43	07:24	13:04	Naked Eye
Saturn♄	Below Horizon	0.3	-40.7°	106°	Pisces	16:19	22:18	04:22	Naked Eye
Mars♂	Below Horizon	1.0	-13.9°	284°	Cancer	01:11	06:49	12:25	Naked Eye
Mercury☿	Optimal Visibility	0.4	81.5°	259°	Libra	06:17	12:50	19:23	Binoculars
Uranus♅	Below Horizon	5.6	-83.7°	285°	Taurus	20:19	01:54	07:24	Binoculars
Neptune♆	Below Horizon	7.8	-33.1°	104°	Pisces	15:47	21:49	03:55	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

RISES15:36

BEST TIME21:44N · 66° high

SETS03:11

Reaches about 66° above the horizon at its highest point.Waxing Gibbous (92% illuminated). Minimal Lunar Glare.

JupiterNaked Eye · High in the sky

RISES01:43

BEST TIME07:24N · 56° high

SETS13:04

Reaches about 56° above the horizon at its highest point.Bright golden disc; four Galilean moons easily seen in 7x50 binoculars.

SaturnNaked Eye · High in the sky

RISES16:19

BEST TIME22:18N · 69° high

SETS04:22

Reaches about 69° above the horizon at its highest point.Pale amber jewel; majestic ring system visible in any 60mm telescope.

VenusNaked Eye · High in the sky

RISES04:59

BEST TIME11:26N · 89° high

SETS17:53

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

RISES01:11

BEST TIME06:49N · 53° high

SETS12:25

Reaches about 53° 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.