OBSERVATORY ALMANAC · NOCTURNAL DISPATCH

Tonight under the Sky

33.69°S, 53.46°WAmerica/Sao_Paulo

Daylight+64.0°

13:17:42

Fri, Oct 23, 2026

PHOTOMETRIC TWILIGHT SPECTRUM7h 51m of true darkness · 10h 48m total night

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

TRUE DARK SKY WINDOW

Sunset18:53

Civil Dusk19:19

Nautical19:50

Full Dark20:22

Nadir00:17

Dark Ends04:13

Nautical04:45

Civil Dawn05:15

Sunrise05:41

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-36.8°

DISTANCE380,358 km

Moonrise16:26

Moonset03:58

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	68.4°	312°	Libra	05:20	12:11	19:02	Naked Eye
Jupiter♃	Rising / Setting	-2.0	2.5°	289°	Leo	02:46	08:09	13:32	Naked Eye
Saturn♄	Below Horizon	0.3	-45.0°	129°	Pisces	17:06	23:04	05:06	Naked Eye
Mars♂	Below Horizon	1.0	-5.9°	287°	Cancer	02:22	07:34	12:47	Naked Eye
Mercury☿	Optimal Visibility	0.4	76.6°	19°	Libra	06:34	13:36	20:37	Binoculars
Uranus♅	Below Horizon	5.6	-68.1°	239°	Taurus	21:32	02:39	07:42	Binoculars
Neptune♆	Below Horizon	7.8	-38.7°	123°	Pisces	16:31	22:34	04:41	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

RISES16:26

BEST TIME22:30N · 52° high

SETS03:58

Reaches about 52° above the horizon at its highest point.Waxing Gibbous (92% illuminated). Minimal Lunar Glare.

JupiterNaked Eye · Good height

RISES02:46

BEST TIME08:09N · 42° high

SETS13:32

Reaches about 42° above the horizon at its highest point.Bright golden disc; four Galilean moons easily seen in 7x50 binoculars.

SaturnNaked Eye · High in the sky

RISES17:06

BEST TIME23:04N · 55° high

SETS05:06

Reaches about 55° above the horizon at its highest point.Pale amber jewel; majestic ring system visible in any 60mm telescope.

VenusNaked Eye · High in the sky

RISES05:20

BEST TIME12:11N · 74° high

SETS19:02

Reaches about 74° above the horizon at its highest point.Brilliant dazzling beacon; visible crescent phase in small telescope.

MarsNaked Eye · Good height

RISES02:22

BEST TIME07:34N · 38° high

SETS12:47

Reaches about 38° 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.