Registered image field
J2000 image-field center RA 12.6 h, Dec 26°. Field 12.4 × 8.4 arcminutes; north -107.7° right of vertical.
EpochJ2000
LimitThe image field center is not necessarily a galaxy nucleus.
Space Time
Spiral galaxies · evidence and sources
Needle Galaxy
An edge-on spiral presents a slender stellar disk cut by a dark dust lane.
Also known as NGC 4565, Caldwell 38.
Catalog
Position basis, the same label the app shows on the selection card.
Every aspect, with its origin
One record per aspect. The origin says what kind of thing each value is; the source says where it came from; the limit says what it cannot tell you.
ObservedCatalogComputedReconstructedIllustrativeUndocumented
Adopted distance
Approximately 30,000,000 light-years.
LimitAn approximate reference distance; distances to individual points within the image are not supplied by the observation.
Observation-derived appearance
An optical observation of the galaxy’s projected edge-on disk. The image does not reveal its full face-on spiral structure. Small foreground or background sources inside the selected apertures may remain; they do not have individually measured depths. Projected structure follows the credited observation at its published angular scale and an approximate adopted distance. Shallow depth is illustrative, not measured tomography. The source palette is preserved; brightness is adjusted for the navigable view.
What is not measured
- Appearance: a reconstruction from measurements, not a direct observation. Observation-derived appearance. An optical observation of the galaxy’s projected edge-on disk. The image does not reveal its full face-on spiral structure. Small foreground or background sources inside the selected apertures may remain; they do not have individually measured depths. Projected structure follows the credited observation at its published angular scale and an approximate adopted distance. Shallow depth is illustrative, not measured tomography. The source palette is preserved; brightness is adjusted for the navigable view.