Frequently Asked Questions

Use our ordering and delivery tools on dashboard.clearsky.vision. Create an account and place an order for your area and date range. If you want sample data or help choosing a setup, contact [email protected].

It means reconstruction, not a cloud mosaic. We remove clouds, cloud shadows, haze and other atmospheric artifacts, clean the optical pixels that are usable, harmonize inputs across time and sensors, and reconstruct the missing areas. We also extract information from SAR to keep continuity when clouds persist.

Core inputs include Sentinel-2 optical and Sentinel-1 SAR. Today we use Sentinel-1A and Sentinel-1C, and three Sentinel-2 spacecraft. Satellite availability changes over time as missions evolve, and we continuously adapt the pipeline. Depending on product and configuration, additional sources can be used to improve timeliness or robustness.

The cloud-free Sentinel-2 service is delivered at 10 m resolution (10 m per pixel).

Default delivery is Cloud Optimized GeoTIFF (COG). If you need another format or packaging, contact support and we will propose an option.

We can deliver both TOA (Top of Atmosphere) and BOA (Bottom of Atmosphere) products, depending on the model and configuration. If you are unsure which you need, tell us your use case and we will recommend a default.

Yes. You can request harmonized outputs to improve consistency across time and across mixed input sources. If you need non-harmonized output for a specific workflow, we can deliver that too.

No. Mosaics and composites typically select or stitch clear pixels across a window and often leave gaps when clouds persist. ClearSKY reconstructs cloud-covered areas and cleans usable optical pixels to produce consistent images on an operational cadence.

We accept GeoJSON and WKT for defining areas. You can also order using tiles if that fits your workflow. If you are integrating via API, we recommend GeoJSON or WKT for repeatable automation.

Polygon ordering is ordering by an AOI shape rather than fixed tiles. In the past, this was sometimes called composite ordering. Today, “composite” refers to downloading arbitrary AOIs, not ordering terminology.

All bounding boxes (bboxes) are accepted in Polygon ordering. Arbitrary polygons are supported, but require prior acceptance on your account. If you need polygon ordering for complex shapes, contact [email protected].

For bbox-based Polygon ordering we calculate area from the bbox, with a minimum billable area of 1 km². For arbitrary polygons (when enabled on your account), we calculate area from the approved polygon.

For bbox-based Polygon ordering, the minimum billable area is 1 km². Tile and minitile products have fixed footprints.

Beyond the required inputs for a model, you may be able to enable extra sources to improve timeliness or robustness under persistent cloud cover. We use all available scenes within your order window to meet the requested cadence.

Image Frequency is the number of days between outputs. Typical options are 1 (daily), 3, and 7 (weekly). If you need a different cadence, contact [email protected].

Reference Date anchors the cadence. For example, weekly delivery with a reference date yields a repeating weekly schedule relative to that anchor. This helps align new orders with existing schedules.

Most orders finish in 1–3 hours. Very large areas or complex configurations can take longer. If an order seems stuck, contact [email protected] with your AOI and timeframe.

You can cancel while status is “Review”. After confirmation, cancellation is usually not possible due to processing and compute costs.

No. Tile and minitile footprints are fixed. If a fixed footprint is not a good fit, use Polygon ordering or choose a different footprint type.

Timing depends on your plan and order type. For plans with an SLA, default delivery is before 10:00 CET. Other plans are delivered on a best-effort basis with typical next-day availability for live data when upstream inputs are available.

All stated delivery times and SLA targets are in CET.

They use the same production pipeline for consistency. Historical is strictly backward-looking. We do not use future observations to fill past dates. Live and recurring follow your chosen cadence going forward.

Short answer: masking hides cloudy pixels. ClearSKY reconstructs them.

• Reconstruction, not omission: We fill cloud-covered areas instead of dropping them.
• Clean optical pixels: We remove haze and other artifacts, not just clouds.
• SAR-informed continuity: We extract information from SAR to reduce gaps under persistent cloud cover.
• Harmonized outputs: Consistency across time and mixed inputs, designed for operational monitoring.
• Operational cadence: 1, 3, or 7-day delivery options rather than waiting for a mosaic window.

• Multi-sensor by design: Sentinel-2 plus SAR, with configurable extra inputs when needed.
• Temporal integrity: Historical production is backward-looking. No future leak into past dates.
• Product options: COG GeoTIFF delivery, plus TOA or BOA and harmonized or non-harmonized outputs.
• Ordering flexibility: Tiles, bboxes, and approved arbitrary polygons for operational workflows.

Subscriptions are billed by calendar month (1st–last day). If you upgrade mid-month, the current month starts immediately and renews on the 1st.

No. Plan credits are included benefits that reset each calendar month and do not roll over.

Top-up credits expire 12 months after purchase. They’re separate from plan credits.

We deduct included monthly plan credits first, then top-up credits. This preserves your 12-month top-ups.

Yes. Cancel before the next month begins to avoid renewal. Any remaining top-up credits remain usable until their 12-month expiry.

Discounts depend on your plan and monthly usage. See the pricing page for current tier rules and rates.

Yes. Your monthly EUR spend ladder is account-wide across all orders and models. Per-km² rates differ per model for each tier.

Tiers are based on your billed usage this month (in EUR). See Pricing for current tier ranges and per-model rates.

As soon as your billed usage crosses a tier boundary, the lower per-km² rates apply to subsequent processing for the rest of that month. Previously processed items are not retroactively repriced.

Nimbus has lower new-area overhead, so it starts cheaper. Stratus-2 is efficient for high-cadence day-for-day production, so its price drops more aggressively in later tiers.

Open Pricing and check the “Model pricing” table. Rates are shown as absolute €/km² for each tier.

Tiles are sold at a large-area discount compared to per-km² polygon pricing. Tiles contribute only a fraction of their area toward your usage calculation, reflecting the discount.

Yes. Free can buy top-ups, but usage is billed at list (Tier 1) rates and does not receive usage-based discounts until you upgrade to a discount-eligible plan.

No. Tiers are based on billed imagery usage this month. Pre-purchasing credit does not, by itself, move you into a new discount tier.

Top-ups are non-refundable once purchased and will expire 12 months after purchase.

All accepted orders processed during the calendar month. Orders still in “Review” are not billed yet.

Subscriptions renew on the 1st (calendar month billing). Recurring orders continue on your configured cadence. To avoid renewal, cancel before the next month begins. For safety, cancel at least 1 day before the month boundary.

Support depends on plan. See the plan details on the pricing page or contact us if you need onboarding or SLA commitments.

SLA targets depend on plan and contract. If you need timeliness and uptime commitments, contact us.

Company email, contact name, legal entity name, billing address, and VAT (if applicable). Add these under Pricing → Top up or when changing plans.

Go to Pricing.

All amounts are billed in EUR. Spend-based tiers and per-km² rates are displayed in EUR.