AstroSequence
Photo & Video
Free · Designed for iPad. Not verified for macOS.
AstroSequence is your deep-sky imaging coach. Every clear night raises two questions: what should I shoot, and exactly how should I shoot it? AstroSequence answers both — scored against
your location, tonight's moon, and your specific gear — then hands you a concrete, time-budgeted shooting plan.
No account. No subscription. No ads. The astronomy engine runs entirely on your device; only optional weather and city lookup use the internet.
TONIGHT — what to shoot
Open the app and see tonight's darkness window, moon phase and illumination, and your top-ranked targets scored 0–100. Each recommendation comes with plain-language reasons and warnings —
visibility hours, transit altitude, how close the moon sits to the target, and seasonal timing. Bright moon out? Narrowband-suitable targets are automatically rescued if your rig has the
right filter.
SHOOTING PLAN — exactly how to shoot it
Pick a target and get a complete plan built for your camera and filters: a gain hint, filter allocation, a sub-exposure sequence table, shooting priorities, and a session checklist. Only
have 90 minutes? Tell it — the plan is budgeted to the time you actually have.
TARGETS — a curated catalog
Browse 60 hand-picked deep-sky targets: emission, reflection and planetary nebulae, supernova remnants, galaxies, globular and open clusters, and dark nebulae. Each entry lists
coordinates, magnitude, size, difficulty, best months, recommended hours, and recommended filters.
PROJECTS — track multi-night targets
Set an hours goal per target, log sessions by filter and minutes, and watch your progress fill. AstroSequence tells you what to shoot next by surfacing whichever filter is furthest behind
its share of the goal.
EQUIPMENT — profiles for every rig
Create multiple equipment profiles — telescope, camera (OSC or mono, cooled or not), mount, guiding, and filter set — with autocomplete backed by a large built-in gear catalog. Switch
rigs and every recommendation re-tunes instantly.
LEARNING MODE
Every plan can explain itself. Expand the "why" notes to understand the reasoning behind filter choices, exposure lengths, and target picks — so you learn the craft, not just follow
instructions.
WHY ASTROSEQUENCE
• On-device astronomy engine — recommendations and plans are computed locally
• Explainable, deterministic recommendations — every pick shows its reasons
• Moon-aware narrowband rescue for bright-moon nights
• Time-budgeted exposure sequences fitted to your available minutes
• Per-rig equipment profiles
• Multi-night project tracking with shoot-next filter guidance
• No account, no subscription, no ads, no tracking
Optional online features: AstroSequence can pull a free hourly cloud-cover and visibility forecast for tonight, and look up your observing site by city name. These use free, keyless
services — your equipment, projects, session logs, and plans always stay on your device.
Built for deep-sky imagers who want to spend clear nights capturing photons, not second-guessing the plan.
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The developer, ForgeFire Technologies LLP, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- ForgeFire Technologies LLP
- Size
- 22.2 MB
- Category
- Photo & Video
- Compatibility
Requires iOS 13.0 or later.
- iPhone
Requires iOS 13.0 or later. - iPad
Requires iPadOS 13.0 or later. - iPod touch
Requires iOS 13.0 or later. - Mac
Requires macOS 11.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2026 Forgefire Technologies LLP