OBSERVATORY ALMANAC · NOCTURNAL DISPATCH

Tonight under the Sky

21.67°S, 44.59°WAmerica/Sao_Paulo

Daylight+26.5°

16:06:17

Fri, Oct 23, 2026

PHOTOMETRIC TWILIGHT SPECTRUM8h 40m of true darkness · 11h 15m total night

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

TRUE DARK SKY WINDOW

Sunset18:05

Civil Dusk18:28

Nautical18:54

Full Dark19:22

Nadir23:42

Dark Ends04:02

Nautical04:30

Civil Dawn04:56

Sunrise05:19

LIVE REAL-TIME OBSERVATION

SunsetSunrise

LOCAL SKY PLANISPHERE · STEREOGRAPHIC PROJECTION

All-Sky Nocturnal Dome

Click any body to inspect telemetry

LUNAR EPHEMERISWaxing Gibbous

ILLUMINATION93%

ALTITUDE3.7°

DISTANCE379,727 km

Moonrise15:47

Moonset03:56

HorizonAbove

LUNAR INTERFERENCE INDEX6% · Minimal Lunar Glare

Sky background remains dark; faint nebulae and distant galaxies are distinct.

ATMOSPHERIC SEEING & CLOUD PROFILETonight's Index

40/100

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♀	Visible Low	-4.3	26.7°	260°	Libra	05:05	11:36	18:06	Naked Eye
Jupiter♃	Below Horizon	-2.0	-40.2°	271°	Leo	01:52	07:33	13:12	Naked Eye
Saturn♄	Below Horizon	0.3	-5.4°	91°	Pisces	16:29	22:28	04:32	Naked Eye
Mars♂	Below Horizon	1.0	-49.1°	273°	Cancer	01:24	06:59	12:32	Naked Eye
Mercury☿	Optimal Visibility	0.4	46.8°	262°	Libra	06:23	13:00	19:37	Binoculars
Uranus♅	Below Horizon	5.6	-60.8°	86°	Taurus	20:33	02:00	07:30	Binoculars
Neptune♆	Rising / Setting	7.8	1.9°	90°	Pisces	15:57	21:59	04:01	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

RISES15:47

BEST TIME21:54N · 64° high

SETS03:56

Reaches about 64° above the horizon at its highest point.Waxing Gibbous (93% illuminated). Minimal Lunar Glare.

JupiterNaked Eye · High in the sky

RISES01:52

BEST TIME07:33N · 54° high

SETS13:12

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

RISES16:29

BEST TIME22:28N · 67° high

SETS04:32

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

RISES05:05

BEST TIME11:36N · 86° high

SETS18:06

Reaches about 86° above the horizon at its highest point.Brilliant dazzling beacon; visible crescent phase in small telescope.

MarsNaked Eye · High in the sky

RISES01:24

BEST TIME06:59N · 50° high

SETS12:32

Reaches about 50° 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.