Astro-Technical Market Analysis

See what the markets reveal
through the sky

Crohamhurst brings W.D. Gann's timeless methodology to your browser. Planetary cycles, harmonic price levels, historical analogs — computed in seconds. Upload your data or enter prices directly.

Start for free View pricing
Not financial advice. Crohamhurst provides tools for independent research and educational purposes only.
5 computation modules
Skyfield DE421 ephemeris
W.D. Gann methodology
100 years of analog scanning
Australian hosted & owned
📊

Bring your own data

Upload a CSV export from any data provider — Yahoo Finance, MetaTrader, Bloomberg, or your broker. Crohamhurst reads your price series and runs the analysis automatically. No vendor lock-in, no proprietary formats.

Upload CSV →

Computation modules

Everything Gann in one place

Five analytical tools, each built on the astronomical and geometric principles W.D. Gann documented in his trading courses and books.

🌌 Ephemeris

Planetary Ephemeris

Geocentric and heliocentric positions for all major planets, Moon, and key points. Includes aspects, zodiac positions, and retrograde flags for any date range.

📈 Bradley

Bradley Siderograph

Donald Bradley's planetary aspect-based market timing index. Plots the siderograph alongside your price data to identify turning point candidates.

🔲 Gann

Square of Nine

Compute harmonic support and resistance levels from any anchor price using Gann's geometric spiral. Cardinal and diagonal axis levels colour-coded.

🌀 Cycles

Cycle Scanner

FFT-based dominant cycle detection with Hurst exponent analysis. Identify the strongest repeating rhythms in any price series. Upload CSV or paste directly.

🔭 Analogs

Historical Analogs

Scan up to 100 years of astronomical history to find dates when planetary positions most closely matched today's sky. Compare past market behaviour at similar configurations.

⚙️ Coming soon

Gann Wheel of 24

Time and price squaring via the 24-hour wheel. Identify time-price symmetry points and natural turning dates directly from your chart data.

Workflow

Simple by design

No installation, no API keys, no Bloomberg terminal required. Your browser is the interface.

Enter or upload data

Paste prices directly, enter a date range, or upload a CSV from any data source. Crohamhurst accepts standard OHLCV and close-only formats.

Choose your module

Select from Ephemeris, Bradley, Square of Nine, Cycle Scanner, or Historical Analogs. Each module has built-in documentation explaining the methodology.

Compute and interpret

Results render in seconds. Levels, charts, analog tables, and cycle periods are displayed with contextual explanations built into every output.

Pricing

Start free. Scale when you need to.

Every plan includes all five modules. Paid plans add higher compute quotas and priority processing.

Free
$0/mo
For independent researchers getting started
  • 100 compute units / day
  • All 5 modules included
  • CSV data upload
  • Priority processing
  • Email support
Get started
Hobbyist
$19/mo AUD
For active traders running daily analysis
  • 1,000 compute units / day
  • All 5 modules included
  • CSV data upload
  • Priority processing
  • Email support
Start Hobbyist
Pro
$79/mo AUD
For serious analysts with heavy workloads
  • 10,000 compute units / day
  • All 5 modules included
  • CSV data upload
  • Priority processing
  • Email support
Start Pro

Australian GST included. Cancel anytime. Full pricing details →

Common questions

Is this financial advice?
No. Crohamhurst provides computational tools for independent research and education. Nothing on this platform constitutes financial, investment, or trading advice. Always consult a licensed financial advisor before making investment decisions.
What is astro-technical analysis?
Astro-technical analysis combines traditional technical analysis with planetary cycle timing, as pioneered by W.D. Gann in the early 20th century. Practitioners look for correlations between astronomical events and market turning points. Crohamhurst provides the computation — interpretation is yours.
What CSV formats are supported?
Any CSV with a date column and a price column (Close, Last, or Price). Yahoo Finance exports, MetaTrader CSVs, and brokerage statement exports all work. Column headers are detected automatically.
How accurate is the ephemeris data?
Crohamhurst uses Skyfield with the DE421 JPL ephemeris, accurate to sub-arcsecond precision for planetary positions from 1900–2050. This is the same ephemeris used by observatories and space agencies.
Where is my data stored?
Uploaded CSV data is used only for computation and is not stored on our servers. Computation results are returned immediately and not retained. See our Privacy Policy for full details.
Can I cancel my subscription?
Yes, anytime through your account billing portal. You retain access until the end of the billing period you've paid for. See our Refund Policy for details.
Named after Crohamhurst Observatory, Queensland

Built on Gann. Powered by the sky.

The same observatory where Inigo Jones developed his long-range Australian weather forecasting using planetary cycles. Now brought to market analysis.

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