OBSERVATORY ALMANAC · NOCTURNAL DISPATCH

Tonight under the Sky

10.67°S, 36.96°WAmerica/Sao_Paulo

Daylight+21.9°

15:50:37

Fri, Oct 23, 2026

PHOTOMETRIC TWILIGHT SPECTRUM9h 11m of true darkness · 11h 35m total night

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

TRUE DARK SKY WINDOW

Sunset17:24

Civil Dusk17:45

Nautical18:11

Full Dark18:36

Nadir23:12

Dark Ends03:47

Nautical04:12

Civil Dawn04:38

Sunrise04:59

LIVE REAL-TIME OBSERVATION

SunsetSunrise

LOCAL SKY PLANISPHERE · STEREOGRAPHIC PROJECTION

All-Sky Nocturnal Dome

Click any body to inspect telemetry

LUNAR EPHEMERISWaxing Gibbous

ILLUMINATION93%

ALTITUDE8.1°

DISTANCE379,785 km

Moonrise15:13

Moonset03:29

HorizonAbove

LUNAR INTERFERENCE INDEX13% · Minimal Lunar Glare

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

ATMOSPHERIC SEEING & CLOUD PROFILETonight's Index

37/100

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	20.8°	255°	Libra	04:51	11:05	17:20	Naked Eye
Jupiter♃	Below Horizon	-2.0	-42.8°	280°	Leo	01:09	07:03	12:53	Naked Eye
Saturn♄	Below Horizon	0.3	-1.8°	89°	Pisces	15:58	21:58	04:02	Naked Eye
Mars♂	Below Horizon	1.0	-51.0°	285°	Cancer	00:38	06:28	12:16	Naked Eye
Mercury☿	Optimal Visibility	0.4	40.8°	251°	Libra	06:12	12:30	18:48	Binoculars
Uranus♅	Below Horizon	5.6	-54.8°	69°	Taurus	19:44	01:29	07:18	Binoculars
Neptune♆	Rising / Setting	7.8	5.4°	89°	Pisces	15:27	21:28	03:30	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

RISES15:13

BEST TIME21:22N · 75° high

SETS03:29

Reaches about 75° above the horizon at its highest point.Waxing Gibbous (93% illuminated). Minimal Lunar Glare.

JupiterNaked Eye · High in the sky

RISES01:09

BEST TIME07:03N · 65° high

SETS12:53

Reaches about 65° above the horizon at its highest point.Bright golden disc; four Galilean moons easily seen in 7x50 binoculars.

SaturnNaked Eye · High in the sky

RISES15:58

BEST TIME21:58N · 78° high

SETS04:02

Reaches about 78° above the horizon at its highest point.Pale amber jewel; majestic ring system visible in any 60mm telescope.

VenusNaked Eye · High in the sky

RISES04:51

BEST TIME11:05S · 83° high

SETS17:20

Reaches about 83° above the horizon at its highest point.Brilliant dazzling beacon; visible crescent phase in small telescope.

MarsNaked Eye · High in the sky

RISES00:38

BEST TIME06:28N · 61° high

SETS12:16

Reaches about 61° 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.