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Object: ARP 24 (NGC 3445 & companions) |
Date: 2015 May 18
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| Peculiarity: One-armed spiral. | |
| Constellation: Ursa Major | Time & altitude: 22.05 UT 63º |
| Catalogue data: | Seeing (5 high): 4/5 |
| R.A: 10h 55m | Transparency (5 high): 3/5 |
| Dec: +56º 59 | Telescope: 0.5m f4.1 Dob. |
| Magnitude: 12.6 | Eyepiece: 8mm Ethos x260 |
| Galaxy size (mins): 1 x 1 | Filters: None. |
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Notes: Seen in twilight, even so the faintest stars in the drawing are 14.5m. There is a reasonably bright, roughly oval core without a nucleus, aligned EW. The single spiral arm shows as a faint circular halo on the S side only. A 10th mag. star just 3’ away is a distraction. The companion galaxies are (1) 15.0m, which would need better conditions and (2) 17.2m, beyond my limiting magnitude. |
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