OBSERVATORY ALMANAC · NOCTURNAL DISPATCH

Tonight under the Sky

8.28°S, 35.03°WAmerica/Sao_Paulo

Daylight+25.5°

15:26:28

Fri, Oct 23, 2026

PHOTOMETRIC TWILIGHT SPECTRUM9h 17m of true darkness · 11h 39m total night

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

TRUE DARK SKY WINDOW

Sunset17:14

Civil Dusk17:36

Nautical18:01

Full Dark18:26

Nadir23:04

Dark Ends03:42

Nautical04:07

Civil Dawn04:32

Sunrise04:53

LIVE REAL-TIME OBSERVATION

SunsetSunrise

LOCAL SKY PLANISPHERE · STEREOGRAPHIC PROJECTION

All-Sky Nocturnal Dome

Click any body to inspect telemetry

LUNAR EPHEMERISWaxing Gibbous

ILLUMINATION93%

ALTITUDE4.4°

DISTANCE379,875 km

Moonrise15:05

Moonset03:22

HorizonAbove

LUNAR INTERFERENCE INDEX7% · Minimal Lunar Glare

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

ATMOSPHERIC SEEING & CLOUD PROFILETonight's Index

39/100

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	24.1°	254°	Libra	04:46	10:58	17:09	Naked Eye
Jupiter♃	Below Horizon	-2.0	-38.3°	282°	Leo	00:59	06:55	12:48	Naked Eye
Saturn♄	Below Horizon	0.3	-5.9°	90°	Pisces	15:50	21:50	03:55	Naked Eye
Mars♂	Below Horizon	1.0	-46.3°	287°	Cancer	00:28	06:21	12:12	Naked Eye
Mercury☿	Optimal Visibility	0.4	43.8°	249°	Libra	06:08	12:22	18:36	Binoculars
Uranus♅	Below Horizon	5.6	-57.5°	63°	Taurus	19:33	01:21	07:14	Binoculars
Neptune♆	Rising / Setting	7.8	1.5°	90°	Pisces	15:19	21:20	03:26	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 TIME21:14N · 78° high

SETS03:22

Reaches about 78° above the horizon at its highest point.Waxing Gibbous (93% illuminated). Minimal Lunar Glare.

JupiterNaked Eye · High in the sky

RISES00:59

BEST TIME06:55N · 67° high

SETS12:48

Reaches about 67° 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 TIME21:50N · 80° high

SETS03:55

Reaches about 80° above the horizon at its highest point.Pale amber jewel; majestic ring system visible in any 60mm telescope.

VenusNaked Eye · High in the sky

RISES04:46

BEST TIME10:58S · 80° high

SETS17:09

Reaches about 80° above the horizon at its highest point.Brilliant dazzling beacon; visible crescent phase in small telescope.

MarsNaked Eye · High in the sky

RISES00:28

BEST TIME06:21N · 64° high

SETS12:12

Reaches about 64° 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.