OBSERVATORY ALMANAC · NOCTURNAL DISPATCH

Tonight under the Sky

5.84°S, 37.92°WAmerica/Sao_Paulo

Daylight+26.7°

15:31:34

Fri, Oct 23, 2026

PHOTOMETRIC TWILIGHT SPECTRUM9h 22m of true darkness · 11h 43m total night

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

TRUE DARK SKY WINDOW

Sunset17:24

Civil Dusk17:45

Nautical18:10

Full Dark18:35

Nadir23:15

Dark Ends03:56

Nautical04:21

Civil Dawn04:46

Sunrise05:07

LIVE REAL-TIME OBSERVATION

SunsetSunrise

LOCAL SKY PLANISPHERE · STEREOGRAPHIC PROJECTION

All-Sky Nocturnal Dome

Click any body to inspect telemetry

LUNAR EPHEMERISWaxing Gibbous

ILLUMINATION93%

ALTITUDE3.0°

DISTANCE379,856 km

Moonrise15:16

Moonset03:35

HorizonAbove

LUNAR INTERFERENCE INDEX5% · Minimal Lunar Glare

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

ATMOSPHERIC SEEING & CLOUD PROFILETonight's Index

40/100

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♀	Visible Low	-4.3	24.9°	253°	Libra	05:01	11:09	17:18	Naked Eye
Jupiter♃	Below Horizon	-2.0	-36.2°	284°	Leo	01:08	07:07	13:02	Naked Eye
Saturn♄	Below Horizon	0.3	-7.4°	89°	Pisces	16:01	22:02	04:07	Naked Eye
Mars♂	Below Horizon	1.0	-44.0°	289°	Cancer	00:36	06:32	12:27	Naked Eye
Mercury☿	Optimal Visibility	0.4	44.4°	246°	Libra	06:23	12:34	18:44	Binoculars
Uranus♅	Below Horizon	5.6	-57.8°	59°	Taurus	19:40	01:33	07:29	Binoculars
Neptune♆	Rising / Setting	7.8	0.1°	90°	Pisces	15:31	21:32	03:37	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

RISES15:16

BEST TIME21:26N · 80° high

SETS03:35

Reaches about 80° above the horizon at its highest point.Waxing Gibbous (93% illuminated). Minimal Lunar Glare.

JupiterNaked Eye · High in the sky

RISES01:08

BEST TIME07:07N · 70° high

SETS13:02

Reaches about 70° above the horizon at its highest point.Bright golden disc; four Galilean moons easily seen in 7x50 binoculars.

SaturnNaked Eye · High in the sky

RISES16:01

BEST TIME22:02N · 83° high

SETS04:07

Reaches about 83° above the horizon at its highest point.Pale amber jewel; majestic ring system visible in any 60mm telescope.

VenusNaked Eye · High in the sky

RISES05:01

BEST TIME11:09S · 78° high

SETS17:18

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

RISES00:36

BEST TIME06:32N · 66° high

SETS12:27

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.