OBSERVATORY ALMANAC · NOCTURNAL DISPATCH

Tonight under the Sky

14.39°S, 42.42°WAmerica/Sao_Paulo

Daylight+23.1°

16:09:36

Fri, Oct 23, 2026

PHOTOMETRIC TWILIGHT SPECTRUM9h 2m of true darkness · 11h 29m total night

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

TRUE DARK SKY WINDOW

Sunset17:49

Civil Dusk18:11

Nautical18:37

Full Dark19:02

Nadir23:33

Dark Ends04:04

Nautical04:30

Civil Dawn04:56

Sunrise05:18

LIVE REAL-TIME OBSERVATION

SunsetSunrise

LOCAL SKY PLANISPHERE · STEREOGRAPHIC PROJECTION

All-Sky Nocturnal Dome

Click any body to inspect telemetry

LUNAR EPHEMERISWaxing Gibbous

ILLUMINATION93%

ALTITUDE7.0°

DISTANCE379,714 km

Moonrise15:36

Moonset03:50

HorizonAbove

LUNAR INTERFERENCE INDEX11% · Minimal Lunar Glare

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

ATMOSPHERIC SEEING & CLOUD PROFILETonight's Index

38/100

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	22.4°	256°	Libra	05:07	11:27	17:47	Naked Eye
Jupiter♃	Below Horizon	-2.0	-42.7°	276°	Leo	01:35	07:25	13:11	Naked Eye
Saturn♄	Below Horizon	0.3	-2.5°	89°	Pisces	16:20	22:20	04:24	Naked Eye
Mars♂	Below Horizon	1.0	-51.1°	281°	Cancer	01:05	06:50	12:33	Naked Eye
Mercury☿	Optimal Visibility	0.4	42.5°	255°	Libra	06:27	12:51	19:16	Binoculars
Uranus♅	Below Horizon	5.6	-56.6°	74°	Taurus	20:12	01:51	07:34	Binoculars
Neptune♆	Rising / Setting	7.8	4.7°	89°	Pisces	15:48	21:50	03:52	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

RISES15:36

BEST TIME21:45N · 72° high

SETS03:50

Reaches about 72° above the horizon at its highest point.Waxing Gibbous (93% illuminated). Minimal Lunar Glare.

JupiterNaked Eye · High in the sky

RISES01:35

BEST TIME07:25N · 61° high

SETS13:11

Reaches about 61° above the horizon at its highest point.Bright golden disc; four Galilean moons easily seen in 7x50 binoculars.

SaturnNaked Eye · High in the sky

RISES16:20

BEST TIME22:20N · 74° high

SETS04:24

Reaches about 74° above the horizon at its highest point.Pale amber jewel; majestic ring system visible in any 60mm telescope.

VenusNaked Eye · High in the sky

RISES05:07

BEST TIME11:27S · 86° high

SETS17:47

Reaches about 86° above the horizon at its highest point.Brilliant dazzling beacon; visible crescent phase in small telescope.

MarsNaked Eye · High in the sky

RISES01:05

BEST TIME06:50N · 58° high

SETS12:33

Reaches about 58° 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.