OBSERVATORY ALMANAC · NOCTURNAL DISPATCH

Tonight under the Sky

20.33°S, 44.02°WAmerica/Sao_Paulo

Daylight+39.4°

15:08:44

Fri, Oct 23, 2026

PHOTOMETRIC TWILIGHT SPECTRUM8h 45m of true darkness · 11h 17m total night

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

TRUE DARK SKY WINDOW

Sunset18:01

Civil Dusk18:24

Nautical18:50

Full Dark19:17

Nadir23:40

Dark Ends04:02

Nautical04:29

Civil Dawn04:56

Sunrise05:18

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-8.3°

DISTANCE379,942 km

Moonrise15:44

Moonset03:19

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	39.3°	263°	Libra	05:05	11:34	18:02	Naked Eye
Jupiter♃	Below Horizon	-2.0	-27.2°	276°	Leo	01:48	07:31	13:11	Naked Eye
Saturn♄	Below Horizon	0.3	-18.5°	96°	Pisces	16:27	22:26	04:29	Naked Eye
Mars♂	Below Horizon	1.0	-36.0°	278°	Cancer	01:20	06:57	12:31	Naked Eye
Mercury☿	Optimal Visibility	0.4	59.5°	263°	Libra	06:24	12:58	19:32	Binoculars
Uranus♅	Below Horizon	5.6	-73.7°	85°	Taurus	20:28	01:57	07:30	Binoculars
Neptune♆	Below Horizon	7.8	-10.8°	95°	Pisces	15:54	21:56	04:02	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

RISES15:44

BEST TIME21:51N · 65° high

SETS03:19

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

JupiterNaked Eye · High in the sky

RISES01:48

BEST TIME07:31N · 55° high

SETS13:11

Reaches about 55° above the horizon at its highest point.Bright golden disc; four Galilean moons easily seen in 7x50 binoculars.

SaturnNaked Eye · High in the sky

RISES16:27

BEST TIME22:26N · 68° high

SETS04:29

Reaches about 68° above the horizon at its highest point.Pale amber jewel; majestic ring system visible in any 60mm telescope.

VenusNaked Eye · High in the sky

RISES05:05

BEST TIME11:34N · 88° high

SETS18:02

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

RISES01:20

BEST TIME06:57N · 52° high

SETS12:31

Reaches about 52° 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.