IRAS Explanatory Supplement
V. Data Reduction
E. Overview of Small Extended Source Data Processing
E.8 The Small Extended Source Catalog

---

Chapter Contents | Introduction | Authors | References
Table of Contents | Index | Previous Section | Next Section

---

Sources included in the small extended source catalog were obtained from the pool of weeks-confined and had to survive additional filtering to reject spurious sources due to crosstalk and point sources (Section V.H.1).

Processing Results in Region A (High Galactic Latitude)
Table V.E.1a

Band	Number of Seconds/Hours Confirmed	Number Surviving Cluster Processing	Number of Weeks- Confirmations	NCOVR(2)	NCOVR(3)	NCOVR(>3)*
12 µm	2593	2507	88	74	13	1
25 µm	3339	3249	101	70	31	0
60 µm	2170	1989	196	147	45	4
100 µm	1753	1249	209	174	30	5

Processing Results in Region B (Galactic Plane)
Table V.E.1b

Band	Number of Seconds/Hours Confirmed	Number Serviving Cluster Processing	Number of Weeks- Confirmations	NCOVR(2)	NCOVR(3)	NCOVR(>3)*
12 µm	5095	2212	350	274	70	6
25 µm	4988	2206	364	261	95	8
60 µm	8706	2104	364	296	65	3
100 µm	4036	1687	369	273	86	10
* NCOVR(n) is the number of weeks-confirmed sources that were detected on n hours-confirming survey coverages.

Associations were made between small extended sources and objects in other astronomical catalogs, following the procedure used for the point source catalog (Section V.H.9). The only difference was that the minimum search radius for all associations was 120".

---

Chapter Contents | Introduction | Authors | References
Table of Contents | Index | Previous Section | Next Section

---