Castle Peak Colorado
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39.0097° N106.8610° W4,344 mBortle 2Denver

Castle Peak Photography Guide

Mountain Peak in Pitkin County, Colorado · 4,344 m (14,252 ft)

  • Bortle 2 sky
  • Sunset azimuth 240°–302°
  • Clearest: September
  • Milky Way Mar–Sep
Photo: Dbunde (talk) · Public domain · source

Castle Peak — a mountain peak in Pitkin County, Colorado at about 4,344 m (14,252 ft) above sea level — is a popular subject for landscape photographers. It is part of Gunnison National Forest. It sits roughly 19.0 km (11.8 mi) NE of Crested Butte.

Castle Peak is the ninth highest summit of the Rocky Mountains of North America and the U.S. state of Colorado. The prominent 14,272-foot (4350.20 m) fourteener is the highest summit of the Elk Mountains and the Maroon Bells-Snowmass Wilderness. The peak is located 11.6 miles (18.7 km) northeast by north (bearing 32°) of the Town of Crested Butte, Colorado, United States, on the drainage divide separating Gunnison National Forest and Gunnison County from White River National Forest and Pitkin County. The summit of Castle Peak is the highest point of both counties. The Aetherius Society considers it to be one of its 19 holy mountains.From the Wikipedia article “Castle Peak (Colorado)”, licensed under CC BY-SA 4.0.
Elevation
4,344 m
14,252 ft
Nearest town
Crested Butte
19.0 km (11.8 mi)
Sky darkness
Bortle 2
Typical truly dark site
Clearest month
September
44% cloud
Milky Way peak
June
5.0 h window
Golden hour (Oct)
5:54 PM
sunset 6:30 PM

Light at Castle Peak

Live
Sunrise
7:23 AM
Sunset
6:23 PM
Golden hour AM
7:06 AM – 7:59 AM
Golden hour PM
5:47 PM – 6:40 PM
Blue hour AM
6:56 AM – 7:06 AM
Blue hour PM
6:40 PM – 6:50 PM
Full darkness
7:52 PM – 5:55 AM
Moon
Waxing Gibbous · 70%
Moonrise / set
3:36 PM / 1:29 AM
Day length
11h 01m
Sunrise azimuth
103°
Sunset azimuth
257°
000306091215182124
NightTwilightBlue hourGolden hourDaylight

Times in America/Denver. Golden hour = sun −4° to +6°; blue hour = −6° to −4°.

Clouds at sunrise & sunset

NWS

Hourly sky cover from the National Weather Service. 20–60% cloud often gives the most colorful sunrises and sunsets.

Sunrise & sunset directions

At Castle Peak the sunrise point swings a long way through the year: about 59° (ENE) at the June solstice and 120° (ESE) in late December. Sunset moves from 302° (WNW) in June to 240° (WSW) in December, and the midday sun climbs to 74° in summer but only 28° in winter.

NESW60°30°
June solsticeEquinoxesDecember solstice
DateSunriseAzimuthSunsetAzimuthNoon sunDaylight
March equinox (Mar 20)7:12 AM90° E7:20 PM271° W51°12h 08m
June solstice (Jun 21)5:43 AM59° ENE8:37 PM302° WNW74°14h 55m
September equinox (Sep 22)6:56 AM89° E7:06 PM271° W51°12h 10m
December solstice (Dec 21)7:24 AM120° ESE4:49 PM240° WSW28°9h 25m

Azimuth is measured clockwise from true north (90° = east, 270° = west). Computed for 2026; values change by less than a degree from year to year.

Golden hour & blue hour by month

Summits catch first and last light — alpenglow can turn rock pink or orange minutes before sunrise and after sunset while valleys stay in shadow.

Month (15th)Blue hour startsSunriseGolden hour endsGolden hour startsSunsetBlue hour endsDaylight
January6:56 AM7:25 AM8:06 AM4:29 PM5:09 PM5:39 PM9h 44m
February6:33 AM7:00 AM7:37 AM5:08 PM5:45 PM6:13 PM10h 45m
March6:53 AM7:20 AM7:55 AM6:39 PM7:15 PM7:41 PM11h 55m
April6:04 AM6:31 AM7:07 AM7:09 PM7:45 PM8:12 PM13h 13m
May5:25 AM5:56 AM6:34 AM7:36 PM8:14 PM8:44 PM14h 18m
June5:10 AM5:42 AM6:22 AM7:56 PM8:36 PM9:08 PM14h 53m
July5:23 AM5:55 AM6:34 AM7:54 PM8:33 PM9:04 PM14h 39m
August5:53 AM6:22 AM6:58 AM7:27 PM8:04 PM8:33 PM13h 42m
September6:23 AM6:50 AM7:25 AM6:42 PM7:18 PM7:44 PM12h 28m
October6:51 AM7:18 AM7:54 AM5:54 PM6:30 PM6:57 PM11h 13m
November6:23 AM6:51 AM7:31 AM4:15 PM4:55 PM5:23 PM10h 03m
December6:50 AM7:20 AM8:02 AM4:05 PM4:47 PM5:17 PM9h 27m

Local time (America/Denver), including daylight saving time. Golden hour runs from about −4° to +6° solar altitude, so the morning golden hour begins during blue hour, before sunrise.

Milky Way & night sky

From Castle Peak, the Milky Way core is visible in a dark sky from March through September. June gives the longest window (about 5.0 hours on a moonless night), and the core peaks around 22° above the southern horizon. Our light-pollution model puts the sky at about Bortle 2 (typical truly dark site), which is excellent for astrophotography.

MonthCore visible (15th)HoursMax altitudeDirection
JanuaryBelow 10° in darkness—-2°—
February5:14 AM – 5:24 AM0.212°SE → SE
March4:23 AM – 5:43 AM1.319°SE → SSE
April2:19 AM – 4:49 AM2.522°SE → S
May12:21 AM – 4:01 AM3.722°SE → S
June10:34 PM – 3:34 AM5.022°SE → SSW
July10:27 PM – 2:17 AM3.822°SSE → SW
August9:43 PM – 12:13 AM2.522°S → SW
September8:48 PM – 10:08 PM1.319°SSW → SW
October7:58 PM – 8:08 PM0.212°SW → SW
NovemberBelow 10° in darkness—0°—
DecemberBelow 10° in darkness—-19°—

Window when the galactic core is at least 10° high during astronomical darkness on the 15th of each month. Pick nights within a few days of the new moon. Plan exact nights with the Milky Way planner.

Estimated sky darkness: 2 Bortle 2 — Typical truly dark site. The summer Milky Way shows rich structure; clouds look like black holes in the stars. Modeled zenith brightness ≈ 21.78 mag/arcsec². Aurora needs roughly Kp 8.0+ to show low on the northern horizon here.

Weather & best season

Long-term NASA satellite data for this area show September as the clearest month (about 44% average cloud cover) and February as the cloudiest (68%). July is the warmest month and January the coldest, which matters for gear, snow access and how long batteries last at night.

Average cloud cover (%)

JanFebMarAprMayJunJulAugSepOctNovDec
JanFebMarAprMayJunJulAugSepOctNovDec
High °F363455617582827878695443
Low °F-26-34-23-12419292710-7-29-28
Precip. (in)1.82.02.02.52.21.22.01.91.71.71.71.9

Monthly climatology for the surrounding 1° grid cell from NASA POWER (MERRA-2). Mountain sites can be colder and cloudier than the cell average.

Photography tips for this mountain peak

  • Long lenses compress ridgelines; shoot the peak from several miles away to make it look massive.
  • Afternoon thunderstorms are common in summer at high elevations — plan summit hikes for early morning.
  • Snow on the summit holds detail best when you expose for the highlights and lift shadows later.
  • Alpenglow lasts only a few minutes; set up and focus beforehand.
  • Clouds around the summit add drama — a clear blue sky is often the least interesting condition.
  • Check road and trail conditions with the managing agency before you go.

Season: Early summer keeps snow on the peaks with green valleys below; autumn adds aspen or larch color in many ranges.

Suggested gear: Telephoto lens, Lightweight tripod, Warm layers, Microspikes in shoulder seasons. Work out exposures with the depth of field, ND filter and NPF rule calculators.

Nearby photo spots

Other locations within 25 km of Castle Peak, closest first.

Campgrounds nearby (Recreation.gov)

FAQ

When is the best time to photograph Castle Peak?
September has the clearest skies on average; june is best for the milky way core. For light, plan around the first and last hour of sun. Early summer keeps snow on the peaks with green valleys below; autumn adds aspen or larch color in many ranges.
What time is golden hour at Castle Peak?
In October the evening golden hour starts around 5:54 PM and ends after sunset at about 6:30 PM; the morning golden hour lasts until about 7:54 AM. Use the live widget above for exact times on any date.
Where does the sun rise and set at Castle Peak?
Sunrise azimuth ranges from about 59° in June to 120° in December; sunset ranges from 302° to 240°. See the sun-path diagram for the full arc.
Can you see the Milky Way from Castle Peak?
Yes — the core is visible from March to September on moonless nights. The estimated sky quality is Bortle 2 (typical truly dark site).
Do you need a permit to photograph at Castle Peak?
Personal photography from public land rarely needs a permit. Commercial shoots, models, large groups and drones may require permission from the land manager — check before you go.
How far is Castle Peak from Crested Butte?
About 19.0 km (11.8 mi) in a straight line; driving distance is usually longer, especially in mountain terrain.

Sources

Location data: Wikidata, USGS GNIS / GeoNames, Wikipedia. Sun, moon and Milky Way times are computed by LWPhoto Atlas for 2026. Climate: NASA POWER. Sky darkness is a population-based estimate (Walker's law), not a measurement. See data sources & licenses.