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--- un:band [2024/04/16 02:11] – asad
+++ un:band [2024/04/16 02:28] (current) – asad
@@ Line 1: / Line 1: @@
 ====== Bands ======
-Color or frequency bands are standardized systems of filters in astronomy which are very different for different frequency ranges. In the visibile range, the bands are usually called //spectral color bands// or //photometric bands// or //photometric systems//.
+Color or frequency bands are standardized systems of filters in astronomy which are very different for different frequency ranges. In the visibile range, the bands are usually called //spectral color bands// or //photometric bands// or //photometric systems//. In radio they are called //frequency bands// each of which are made of narrower //frequency channels//.
 ===== - Photometric system =====
@@ Line 20: / Line 20: @@
 | L | 3450 | 472 | 87 | 11.9 | 281 |
 | M | 4750 | 460 | 63 | 6.1 | 154 |
+===== - Radio bands =====