# European Southern Observatory, La Silla-DSS

> The Digitized Sky Survey (DSS) is a digitized version of several photographic astronomical surveys of the night sky, produced by the Space Telescope Science Institute between 1983 and 2006.

**Wikidata**: [Q114232967](https://www.wikidata.org/wiki/Q114232967)  
**Source**: https://4ort.xyz/entity/european-southern-observatory-la-silla-dss

## Summary
The European Southern Observatory, La Silla-DSS is the La Silla site implementation of the Digitized Sky Survey, which is a digitized version of multiple photographic astronomical surveys of the night sky. This data product was produced by the Space Telescope Science Institute between 1983 and 2006.

## Key Facts
-   **Entity Type:** Astronomical survey and space telescope classification.
-   **Part Of:** European Southern Observatory (ESO).
-   **Location:** Ipomoea arborescens (La Silla Observatory), Chile.
-   **Coordinates:** Latitude: -29.258822, Longitude: -70.73374.
-   **Minor Planet Center Observatory Code:** 262.
-   **Producer:** Space Telescope Science Institute (STScI).
-   **Production Period:** Between 1983 and 2006.
-   **Data Type:** Digitized version of several photographic astronomical surveys of the night sky.
-   **Country:** Chile.

## FAQs
### Q: What is the La Silla-DSS?
A: The La Silla-DSS refers to the Digitized Sky Survey data specifically associated with or produced at the European Southern Observatory's La Silla facility. It is the digitized result of photographic sky surveys created by STScI between 1983 and 2006.

### Q: Who produced the Digitized Sky Survey?
A: The Digitized Sky Survey (DSS) was produced by the Space Telescope Science Institute (STScI).

### Q: When was the Digitized Sky Survey created?
A: The Digitized Sky Survey was produced by the Space Telescope Science Institute between 1983 and 2006.

### Q: Where is the La Silla-DSS located?
A: The La Silla-DSS is located at the La Silla Observatory, specifically within the area known as Ipomoea arborescens, in Chile.

### Q: What is the unique identifier for La Silla-DSS used in minor planet observations?
A: The Minor Planet Center assigns La Silla-DSS the observatory code 262.

## Why It Matters
The Digitized Sky Survey (DSS) is critically important as it transformed decades of analog astronomical photography into a vast, digital archive accessible to researchers globally. Before digital surveys became common, astronomers relied on glass plate photographs. The DSS provided the first comprehensive digital mapping of the entire sky, enabling systematic object searches, chart comparisons, and long-term studies of celestial phenomena on an unprecedented scale. Its creation and accessibility fundamentally changed how astronomers accessed and utilized historical and contemporary sky survey data, serving as a foundational resource for countless astronomical discoveries and projects for decades following its completion.

## Notable For
-   **Pioneering Sky Digitization:** Provided the first comprehensive digital mapping of the entire night sky based on photographic surveys.
-   **Long Production Span:** Created over a significant period (1983-2006) by a dedicated team at the Space Telescope Science Institute.
-   **ESO La Silla Association:** Directly linked to the major European Southern Observatory facility in Chile, utilizing its historical photographic data.
-   **Access Foundation:** Served as a foundational digital archive upon which countless subsequent astronomical surveys and research projects relied.

## Body
### Overview
The European Southern Observatory, La Silla-DSS is the designation for the Digitized Sky Survey (DSS) project or data associated with the La Silla Observatory site operated by the European Southern Observatory in Chile. It represents the digitization effort applied to photographic astronomical surveys capturing the night sky.

### Production
-   The Digitized Sky Survey (DSS) was produced by the **Space Telescope Science Institute (STScI)**.
-   Production occurred over a significant timeframe, specifically **between 1983 and 2006**.
-   The core task involved converting photographic plates from various astronomical surveys into digital image data.

### Data Source
-   The DSS is fundamentally a **digitized version of several photographic astronomical surveys of the night sky**.
-   These photographic surveys provided the raw material scanned and digitized by STScI to create the DSS dataset.

### Classification
-   The entity is classified as both a **space telescope** and an **astronomical survey**.
-   It functions as a major **astronomical survey** dataset.
-   Its classification as a **space telescope** likely relates to the origin or type of the underlying photographic surveys utilized (e.g., Schmidt telescopes).

### Location
-   The La Silla-DSS is situated at the **La Silla Observatory**.
-   The specific location is within the area known as **Ipomoea arborescens** at the observatory.
-   Geographical coordinates: **Latitude -29.258822, Longitude -70.73374**.
-   It is part of the **European Southern Observatory (ESO)** network.
-   Located in **Chile**.

### Identification
-   The **Minor Planet Center (MPC)** assigns the observatory code **262** to this La Silla-DSS facility for minor planet and comet observations.