OBSERVATORY ALMANAC · NOCTURNAL DISPATCH

Tonight under the Sky

27.14°S, 52.35°WAmerica/Sao_Paulo

Daylight+58.1°

14:12:41

Fri, Oct 23, 2026

PHOTOMETRIC TWILIGHT SPECTRUM8h 20m of true darkness · 11h 3m total night

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

TRUE DARK SKY WINDOW

Sunset18:41

Civil Dusk19:05

Nautical19:34

Full Dark20:03

Nadir00:13

Dark Ends04:23

Nautical04:52

Civil Dawn05:21

Sunrise05:45

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-27.4°

DISTANCE380,151 km

Moonrise16:20

Moonset03:53

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	59.6°	281°	Libra	05:27	12:07	18:46	Naked Eye
Jupiter♃	Below Horizon	-2.0	-7.8°	282°	Leo	02:33	08:04	13:36	Naked Eye
Saturn♄	Below Horizon	0.3	-37.1°	111°	Pisces	17:01	22:59	05:02	Naked Eye
Mars♂	Below Horizon	1.0	-16.8°	282°	Cancer	02:04	07:30	12:54	Naked Eye
Mercury☿	Optimal Visibility	0.4	78.7°	301°	Libra	06:44	13:31	20:18	Binoculars
Uranus♅	Below Horizon	5.6	-82.2°	218°	Taurus	21:14	02:35	07:51	Binoculars
Neptune♆	Below Horizon	7.8	-29.8°	108°	Pisces	16:27	22:30	04:36	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

RISES16:20

BEST TIME22:26N · 58° high

SETS03:53

Reaches about 58° above the horizon at its highest point.Waxing Gibbous (92% illuminated). Minimal Lunar Glare.

JupiterNaked Eye · High in the sky

RISES02:33

BEST TIME08:04N · 49° high

SETS13:36

Reaches about 49° above the horizon at its highest point.Bright golden disc; four Galilean moons easily seen in 7x50 binoculars.

SaturnNaked Eye · High in the sky

RISES17:01

BEST TIME22:59N · 62° high

SETS05:02

Reaches about 62° above the horizon at its highest point.Pale amber jewel; majestic ring system visible in any 60mm telescope.

VenusNaked Eye · High in the sky

RISES05:27

BEST TIME12:07N · 81° high

SETS18:46

Reaches about 81° above the horizon at its highest point.Brilliant dazzling beacon; visible crescent phase in small telescope.

MarsNaked Eye · Good height

RISES02:04

BEST TIME07:30N · 45° high

SETS12:54

Reaches about 45° 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.