OBSERVATORY ALMANAC · NOCTURNAL DISPATCH

Tonight under the Sky

5.81°S, 35.23°WAmerica/Sao_Paulo

Daylight+20.4°

15:46:49

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

Sunset17:13

Civil Dusk17:34

Nautical17:59

Full Dark18:24

Nadir23:05

Dark Ends03:45

Nautical04:10

Civil Dawn04:35

Sunrise04:56

LIVE REAL-TIME OBSERVATION

SunsetSunrise

LOCAL SKY PLANISPHERE · STEREOGRAPHIC PROJECTION

All-Sky Nocturnal Dome

Click any body to inspect telemetry

LUNAR EPHEMERISWaxing Gibbous

ILLUMINATION93%

ALTITUDE9.2°

DISTANCE379,799 km

Moonrise15:05

Moonset03:24

HorizonAbove

LUNAR INTERFERENCE INDEX15% · 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	18.7°	253°	Libra	04:50	10:59	17:07	Naked Eye
Jupiter♃	Below Horizon	-2.0	-42.6°	284°	Leo	00:57	06:56	12:52	Naked Eye
Saturn♄	Below Horizon	0.3	-0.9°	89°	Pisces	15:50	21:51	03:56	Naked Eye
Mars♂	Below Horizon	1.0	-50.2°	291°	Cancer	00:25	06:21	12:16	Naked Eye
Mercury☿	Optimal Visibility	0.4	38.4°	248°	Libra	06:12	12:23	18:33	Binoculars
Uranus♅	Below Horizon	5.6	-52.0°	63°	Taurus	19:30	01:22	07:19	Binoculars
Neptune♆	Rising / Setting	7.8	6.2°	90°	Pisces	15:20	21:21	03:23	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

RISES15:05

BEST TIME21:15N · 80° high

SETS03:24

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

JupiterNaked Eye · High in the sky

RISES00:57

BEST TIME06:56N · 70° high

SETS12:52

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

RISES15:50

BEST TIME21:51N · 83° high

SETS03:56

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

RISES04:50

BEST TIME10:59S · 78° high

SETS17:07

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

RISES00:25

BEST TIME06:21N · 66° high

SETS12:16

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.