Increment of the world coordinate at the reference point for axis 1. The value must not be zero.
| Attribute | Value |
|---|---|
| data type | float |
| enumerated Values | not defined |
| units | degrees |
| example | 3.055e-5 |
| default value | 1.0 |
| special processing | not defined |
| source | Science and Operations Center Project Reference Database (PRD) |
| software source | PRD:Aperture.XSciScale|adjust_cdelt| |
| calculation | |
| DB destination | ['ScienceCommonExt.cdelt1', 'GuideStarExt.cdelt1'] |
| data type in DB | float |
| instrument | Multiple |
| mode | All |
| product level | 1p |
| FITS hdu | SCI |
| FITS header section | WCS Parameters |