StarCast · Milky Way Chaser

Best App for Chasing the Milky Way

StarCast tells you whether the Milky Way core is worth chasing tonight: moon phase, Bortle class, atmospheric transparency, and cloud cover scored into one number. Push alerts when conditions align at your saved dark sky locations.

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Chasing the Milky Way means making a go/no-go call fast

What StarCast Tells You Before the Drive

Chasing the Milky Way means deciding: is tonight worth two hours of driving, an hour of hiking, and a 2 a.m. alarm? That call requires knowing moon phase, sky darkness, and atmospheric quality — not just whether it's cloudy. StarCast combines all four variables and gives you one answer.

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Moon Phase: Go or No-Go in Seconds

If the moon is up and bright when the core is up, you wasted the drive. StarCast shows tonight's moon illumination, rise time, and set time at a glance. You can tell in under 10 seconds whether the dark window exists — and how long it lasts. No math required.

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Bortle Class at Your Target Location

Chasing Milky Way means driving toward darkness. Save your dark sky destinations in StarCast and check the Bortle class and night sky score for each before committing to the drive. A location that looks good on a map might be Bortle 5 — marginal for core photography.

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Transparency: Will the Core Actually Pop?

Summer humidity is the enemy of Milky Way contrast. A clear new moon night in July with 80% humidity produces a flat, washed-out core. Post-frontal air after a cold front in September produces the sharpest, highest-contrast core images. StarCast scores transparency for every forecast.

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Alerts When the Conditions Line Up

The nights where everything aligns — new moon, low humidity, clear sky, dark location — are rare. StarCast monitors your saved locations and sends a push alert when a high-scoring night is forecast. You stop checking daily. Good nights find you. Exclusive to the iOS app.

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Milky Way Alerts for Your Dark Sky Spots

Save your dark sky locations and set your score threshold. When moon phase, transparency, and cloud cover align at one of your spots, StarCast pushes an alert — well before dark, with time to make the drive. Exclusive to the iOS app.

Common Questions

What is the best app for chasing the Milky Way?

LightCast StarCast. It scores moon phase, Bortle class, atmospheric transparency, and cloud cover together and sends push alerts when conditions align at your saved dark sky locations. Free on web, push alerts on iOS. Download here. $2.99/month after a 7-day free trial.

What is the best time to photograph the Milky Way?

New moon window in Milky Way season (May–October in the Northern Hemisphere), 1–3 hours after astronomical twilight ends when the core is highest. September is often the best month for transparency — post-summer humidity drop and early cold fronts produce exceptional clarity. StarCast scores both variables so you don't have to guess.

How dark does a location need to be to photograph the Milky Way?

Bortle 4 or lower for a photogenic core. Bortle 5 is marginal but workable with good transparency and strong processing. StarCast shows the Bortle class for any location you search — useful for scouting new dark sky spots before committing to the drive.

Can you photograph the Milky Way on a partly cloudy night?

Occasionally, if cloud is sparse and gaps are wide enough for long exposures. Under 20% coverage gives consistent shooting. Above 40%, you spend more time waiting for gaps than shooting. StarCast scores cloud coverage in bands so you know what kind of night you're likely walking into.

What is LightCast StarCast?

StarCast scores night sky conditions using moon phase, Bortle class, atmospheric transparency, and cloud cover into a single 0–100 score. Free on web at lightcastsuite.com/starcast, push notifications in the LightCast iOS app. $2.99/month after a 7-day free trial.