OBSERVATORY ALMANAC · NOCTURNAL DISPATCH

Tonight under the Sky

21.20°S, 49.56°WAmerica/Sao_Paulo

Daylight+32.2°

16:01:26

Fri, Oct 23, 2026

PHOTOMETRIC TWILIGHT SPECTRUM8h 42m of true darkness · 11h 16m total night

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

TRUE DARK SKY WINDOW

Sunset18:24

Civil Dusk18:47

Nautical19:14

Full Dark19:41

Nadir00:02

Dark Ends04:23

Nautical04:50

Civil Dawn05:17

Sunrise05:40

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-1.6°

DISTANCE379,745 km

Moonrise16:07

Moonset04:16

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	32.3°	262°	Libra	05:26	11:56	18:25	Naked Eye
Jupiter♃	Below Horizon	-2.0	-34.4°	273°	Leo	02:11	07:53	13:32	Naked Eye
Saturn♄	Below Horizon	0.3	-11.2°	93°	Pisces	16:49	22:48	04:51	Naked Eye
Mars♂	Below Horizon	1.0	-43.3°	275°	Cancer	01:43	07:19	12:52	Naked Eye
Mercury☿	Optimal Visibility	0.4	52.5°	263°	Libra	06:44	13:20	19:56	Binoculars
Uranus♅	Below Horizon	5.6	-66.6°	86°	Taurus	20:52	02:19	07:51	Binoculars
Neptune♆	Below Horizon	7.8	-3.6°	92°	Pisces	16:16	22:18	04:24	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

RISES16:07

BEST TIME22:14N · 65° high

SETS04:16

Reaches about 65° above the horizon at its highest point.Waxing Gibbous (93% illuminated). Minimal Lunar Glare.

JupiterNaked Eye · High in the sky

RISES02:11

BEST TIME07:53N · 54° high

SETS13:32

Reaches about 54° 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 · 67° high

SETS04:51

Reaches about 67° above the horizon at its highest point.Pale amber jewel; majestic ring system visible in any 60mm telescope.

VenusNaked Eye · High in the sky

RISES05:26

BEST TIME11:56N · 87° high

SETS18:25

Reaches about 87° above the horizon at its highest point.Brilliant dazzling beacon; visible crescent phase in small telescope.

MarsNaked Eye · High in the sky

RISES01:43

BEST TIME07:19N · 51° high

SETS12:52

Reaches about 51° 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.