OBSERVATORY ALMANAC · NOCTURNAL DISPATCH

Tonight under the Sky

16.81°S, 44.79°WAmerica/Sao_Paulo

Daylight+73.5°

12:48:14

Fri, Oct 23, 2026

PHOTOMETRIC TWILIGHT SPECTRUM8h 55m of true darkness · 11h 24m total night

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

TRUE DARK SKY WINDOW

Sunset18:01

Civil Dusk18:23

Nautical18:49

Full Dark19:15

Nadir23:43

Dark Ends04:10

Nautical04:37

Civil Dawn05:03

Sunrise05:25

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-41.2°

DISTANCE380,468 km

Moonrise15:47

Moonset03:22

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	72.9°	263°	Libra	05:13	11:37	18:00	Naked Eye
Jupiter♃	Rising / Setting	-2.0	6.6°	287°	Leo	01:50	07:34	13:18	Naked Eye
Saturn♄	Below Horizon	0.3	-52.7°	111°	Pisces	16:29	22:29	04:33	Naked Eye
Mars♂	Below Horizon	1.0	-1.8°	288°	Cancer	01:20	07:00	12:39	Naked Eye
Mercury☿	Optimal Visibility	0.4	84.8°	143°	Libra	06:33	13:01	19:29	Binoculars
Uranus♅	Below Horizon	5.6	-71.7°	286°	Taurus	20:25	02:04	07:39	Binoculars
Neptune♆	Below Horizon	7.8	-45.1°	108°	Pisces	15:58	21:59	04:05	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

RISES15:47

BEST TIME21:55N · 69° high

SETS03:22

Reaches about 69° above the horizon at its highest point.Waxing Gibbous (92% illuminated). Minimal Lunar Glare.

JupiterNaked Eye · High in the sky

RISES01:50

BEST TIME07:34N · 59° high

SETS13:18

Reaches about 59° above the horizon at its highest point.Bright golden disc; four Galilean moons easily seen in 7x50 binoculars.

SaturnNaked Eye · High in the sky

RISES16:29

BEST TIME22:29N · 72° high

SETS04:33

Reaches about 72° above the horizon at its highest point.Pale amber jewel; majestic ring system visible in any 60mm telescope.

VenusNaked Eye · High in the sky

RISES05:13

BEST TIME11:37S · 89° high

SETS18:00

Reaches about 89° above the horizon at its highest point.Brilliant dazzling beacon; visible crescent phase in small telescope.

MarsNaked Eye · High in the sky

RISES01:20

BEST TIME07:00N · 55° high

SETS12:39

Reaches about 55° 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.