| Object: M87 (Arp 152) | Date: 2017 May 1 |
| Constellation: Virgo | Time & altitude: 23.20 UT 47º |
| Catalogue data: | Seeing (5 high): 4/5 |
| R.A: 12h 31m | Transparency (5 high): 3 or 4/5 |
| Dec: 12º 24 | Telescope: 0.5m f4.1 Dob. |
| Magnitude: 8.6 |
Eyepiece: 17mm Ethos x120 8mm Ethos x260 5mm Clavé x415
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| Galaxy size (mins): 8 x 7 | Filters: None. |
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Notes: Transparency is variable due to haze. There is a lot of moisture in the air, with patches of ground mist in the field. My back is to a 5-day-old Moon about 10º high, low in the NW. M87 is a prominent, round galaxy with a large, bright core. There is no structure visible. All three magnifications gave a good view. Unable to detect any hint of the jet. The top magnification should be sufficient, probably need much better conditions. Other Virgo cluster galaxies are nearby. That in the drawing is NGC 4478 (12.6m). |
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