Describe the bug

SDSS image only provides a CD matrix. However, if we take CDELT1 = CD1_1 and CDELT2 = CD2_2, the pixel ratio will be a ridiculous value of about 12.

To Reproduce
Steps to reproduce the behavior:

1. open frame-r-000094-1-0011.fits
2. See an "elongated" image

Expected behavior
Like the image shown in DS9

Screenshots or videos

Platform info (please complete the following information):

• OS [e.g. macOS Monterey]: macOS 14.4.1
• Browser [e.g. chrome, safari, electron app]:
• Browser version [e.g. 22]:
• Backend branch [e.g. dev, v3b2 release]: dev
• Frontend branch [e.g. dev, v3b2 release]: dev