M94 Cat's Eye Galaxy
Image information:
| Date: | 04/04/2025 |
| Equipment: | Altair Hypercam 533C colour camera with IDAS HEUIB-II filter through APM/LZOS 105/650 APO telescope on Pegasus Astro NYX-101 mount. The telescope was working at f6.2 with Astro-Tech 2" field flattener. |
| Image type: | OSC |
| Exposure time: | 90X180s, gain 250 (0.8e/ADU). |
| Comment: |
Object information:
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Object designations: |
M94, NGC4736, Cat's Eye Galaxy |
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Object type: |
Spiral galaxy |
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Object size: |
11.2' X 9.1' |
| Constellation: |
Canes Venatici
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Comment: |
M94 is unusual spiral galaxy with the structure that resembles several concentric rings. These rings appear to form at resonance locations within the disk of the galaxy. Closest to the bright core is bluish ring which is the site of intense star formation. Bluish color comes from energetic young stars abundant in that ring. Next ring is much fainter, comprised of an older yellowish stellar population. In the outskirts of the galaxy there is again another ring with moderate star formation activity. M94 is one of a relatively rare class of galaxies in which two waves of star formation are evident. Arround the galaxy there is another, very faint, but very large outer ring. M94 is 15 million ly distant and has a diameter of 30 kly. |
Related images:
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List of related images: |
M94, LRGB, ST2000XM through WO ZS105ED telescope |