OBSERVATORY ALMANAC · NOCTURNAL DISPATCH

Tonight under the Sky

21.47°S, 45.82°WAmerica/Sao_Paulo

Daylight+29.1°

15:59:55

Fri, Oct 23, 2026

PHOTOMETRIC TWILIGHT SPECTRUM8h 41m of true darkness · 11h 15m total night

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

TRUE DARK SKY WINDOW

Sunset18:09

Civil Dusk18:32

Nautical18:59

Full Dark19:26

Nadir23:47

Dark Ends04:07

Nautical04:35

Civil Dawn05:02

Sunrise05:24

LIVE REAL-TIME OBSERVATION

SunsetSunrise

LOCAL SKY PLANISPHERE · STEREOGRAPHIC PROJECTION

All-Sky Nocturnal Dome

Click any body to inspect telemetry

LUNAR EPHEMERISWaxing Gibbous

ILLUMINATION93%

ALTITUDE1.3°

DISTANCE379,751 km

Moonrise15:52

Moonset04:01

HorizonAbove

LUNAR INTERFERENCE INDEX2% · Minimal Lunar Glare

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

ATMOSPHERIC SEEING & CLOUD PROFILETonight's Index

41/100

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	29.2°	261°	Libra	05:10	11:41	18:11	Naked Eye
Jupiter♃	Below Horizon	-2.0	-37.6°	272°	Leo	01:56	07:38	13:17	Naked Eye
Saturn♄	Below Horizon	0.3	-8.0°	92°	Pisces	16:34	22:33	04:37	Naked Eye
Mars♂	Below Horizon	1.0	-46.5°	274°	Cancer	01:29	07:04	12:37	Naked Eye
Mercury☿	Optimal Visibility	0.4	49.4°	262°	Libra	06:29	13:05	19:41	Binoculars
Uranus♅	Below Horizon	5.6	-63.4°	86°	Taurus	20:37	02:04	07:35	Binoculars
Neptune♆	Below Horizon	7.8	-0.4°	91°	Pisces	16:01	22:04	04:10	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

RISES15:52

BEST TIME21:59N · 64° high

SETS04:01

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

JupiterNaked Eye · High in the sky

RISES01:56

BEST TIME07:38N · 54° high

SETS13:17

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

RISES16:34

BEST TIME22:33N · 67° high

SETS04:37

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

RISES05:10

BEST TIME11:41N · 87° high

SETS18:11

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

RISES01:29

BEST TIME07:04N · 51° high

SETS12:37

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.