OBSERVATORY ALMANAC · NOCTURNAL DISPATCH

Tonight under the Sky

29.63°S, 50.83°WAmerica/Sao_Paulo

Daylight+32.0°

16:06:09

Fri, Oct 23, 2026

PHOTOMETRIC TWILIGHT SPECTRUM8h 10m of true darkness · 10h 58m total night

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

TRUE DARK SKY WINDOW

Sunset18:38

Civil Dusk19:03

Nautical19:32

Full Dark20:02

Nadir00:07

Dark Ends04:12

Nautical04:42

Civil Dawn05:11

Sunrise05:36

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-2.0°

DISTANCE379,727 km

Moonrise16:14

Moonset04:18

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	33.2°	267°	Libra	05:17	12:01	18:44	Naked Eye
Jupiter♃	Below Horizon	-2.0	-34.4°	267°	Leo	02:27	07:58	13:27	Naked Eye
Saturn♄	Below Horizon	0.3	-10.7°	95°	Pisces	16:55	22:53	04:56	Naked Eye
Mars♂	Below Horizon	1.0	-43.3°	267°	Cancer	02:02	07:24	12:44	Naked Eye
Mercury☿	Optimal Visibility	0.4	52.8°	274°	Libra	06:33	13:25	20:17	Binoculars
Uranus♅	Below Horizon	5.6	-65.8°	105°	Taurus	21:13	02:24	07:40	Binoculars
Neptune♆	Below Horizon	7.8	-3.3°	93°	Pisces	16:21	22:24	04:30	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

RISES16:14

BEST TIME22:20N · 56° high

SETS04:18

Reaches about 56° above the horizon at its highest point.Waxing Gibbous (93% illuminated). Minimal Lunar Glare.

JupiterNaked Eye · High in the sky

RISES02:27

BEST TIME07:58N · 46° high

SETS13:27

Reaches about 46° above the horizon at its highest point.Bright golden disc; four Galilean moons easily seen in 7x50 binoculars.

SaturnNaked Eye · High in the sky

RISES16:55

BEST TIME22:53N · 59° high

SETS04:56

Reaches about 59° above the horizon at its highest point.Pale amber jewel; majestic ring system visible in any 60mm telescope.

VenusNaked Eye · High in the sky

RISES05:17

BEST TIME12:01N · 78° high

SETS18:44

Reaches about 78° above the horizon at its highest point.Brilliant dazzling beacon; visible crescent phase in small telescope.

MarsNaked Eye · Good height

RISES02:02

BEST TIME07:24N · 43° high

SETS12:44

Reaches about 43° 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.