OBSERVATORY ALMANAC · NOCTURNAL DISPATCH

Tonight under the Sky

21.36°S, 43.25°WAmerica/Sao_Paulo

Daylight+25.3°

16:06:09

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

Sunset17:59

Civil Dusk18:22

Nautical18:49

Full Dark19:16

Nadir23:37

Dark Ends03:57

Nautical04:25

Civil Dawn04:51

Sunrise05:14

LIVE REAL-TIME OBSERVATION

SunsetSunrise

LOCAL SKY PLANISPHERE · STEREOGRAPHIC PROJECTION

All-Sky Nocturnal Dome

Click any body to inspect telemetry

LUNAR EPHEMERISWaxing Gibbous

ILLUMINATION93%

ALTITUDE4.9°

DISTANCE379,727 km

Moonrise15:41

Moonset03:51

HorizonAbove

LUNAR INTERFERENCE INDEX8% · Minimal Lunar Glare

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

ATMOSPHERIC SEEING & CLOUD PROFILETonight's Index

39/100

Challenging Stargazing

High cloud cover or severe light interference. Recommend bright planetary observation or indoor planning.

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	25.4°	260°	Libra	05:00	11:31	18:00	Naked Eye
Jupiter♃	Below Horizon	-2.0	-41.5°	270°	Leo	01:46	07:28	13:07	Naked Eye
Saturn♄	Below Horizon	0.3	-4.2°	90°	Pisces	16:24	22:23	04:26	Naked Eye
Mars♂	Below Horizon	1.0	-50.3°	272°	Cancer	01:18	06:53	12:27	Naked Eye
Mercury☿	Optimal Visibility	0.4	45.6°	261°	Libra	06:19	12:55	19:31	Binoculars
Uranus♅	Below Horizon	5.6	-59.6°	85°	Taurus	20:27	01:54	07:25	Binoculars
Neptune♆	Rising / Setting	7.8	3.0°	89°	Pisces	15:51	21:53	03:55	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

RISES15:41

BEST TIME21:48N · 64° high

SETS03:51

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

JupiterNaked Eye · High in the sky

RISES01:46

BEST TIME07:28N · 54° high

SETS13:07

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

RISES16:24

BEST TIME22:23N · 67° high

SETS04:26

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

RISES05:00

BEST TIME11:31N · 87° high

SETS18:00

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

RISES01:18

BEST TIME06:53N · 51° high

SETS12:27

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.