OBSERVATORY ALMANAC · NOCTURNAL DISPATCH

Tonight under the Sky

6.25°S, 40.61°WAmerica/Sao_Paulo

Daylight+57.1°

13:38:26

Fri, Oct 23, 2026

PHOTOMETRIC TWILIGHT SPECTRUM9h 21m of true darkness · 11h 43m total night

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

TRUE DARK SKY WINDOW

Sunset17:35

Civil Dusk17:56

Nautical18:21

Full Dark18:46

Nadir23:26

Dark Ends04:07

Nautical04:31

Civil Dawn04:56

Sunrise05:17

LIVE REAL-TIME OBSERVATION

SunsetSunrise

LOCAL SKY PLANISPHERE · STEREOGRAPHIC PROJECTION

All-Sky Nocturnal Dome

Click any body to inspect telemetry

LUNAR EPHEMERISWaxing Gibbous

ILLUMINATION92%

ALTITUDE-26.6°

DISTANCE380,280 km

Moonrise15:28

Moonset03:04

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	54.3°	248°	Libra	05:11	11:20	17:29	Naked Eye
Jupiter♃	Below Horizon	-2.0	-6.1°	284°	Leo	01:19	07:18	13:13	Naked Eye
Saturn♄	Below Horizon	0.3	-38.5°	93°	Pisces	16:12	22:12	04:17	Naked Eye
Mars♂	Below Horizon	1.0	-14.6°	287°	Cancer	00:47	06:43	12:37	Naked Eye
Mercury☿	Optimal Visibility	0.4	70.4°	220°	Libra	06:33	12:44	18:55	Binoculars
Uranus♅	Below Horizon	5.6	-75.1°	353°	Taurus	19:52	01:48	07:39	Binoculars
Neptune♆	Below Horizon	7.8	-30.8°	94°	Pisces	15:41	21:43	03:48	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

RISES15:28

BEST TIME21:37N · 80° high

SETS03:04

Reaches about 80° above the horizon at its highest point.Waxing Gibbous (92% illuminated). Minimal Lunar Glare.

JupiterNaked Eye · High in the sky

RISES01:19

BEST TIME07:18N · 69° high

SETS13:13

Reaches about 69° above the horizon at its highest point.Bright golden disc; four Galilean moons easily seen in 7x50 binoculars.

SaturnNaked Eye · High in the sky

RISES16:12

BEST TIME22:12N · 82° high

SETS04:17

Reaches about 82° above the horizon at its highest point.Pale amber jewel; majestic ring system visible in any 60mm telescope.

VenusNaked Eye · High in the sky

RISES05:11

BEST TIME11:20S · 78° high

SETS17:29

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

MarsNaked Eye · High in the sky

RISES00:47

BEST TIME06:43N · 66° high

SETS12:37

Reaches about 66° 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.