When to photograph M 84
M 84 is a galaxy in Virgo, 7′ x 6′ across at magnitude 9.8. Also listed as NGC 4374.
When to photograph it
From 45° N the best months are February to April, with up to 7.7 hours of astronomical darkness above 30° in March. It reaches 58° at its highest.
From 35° S the best months are March to May, with up to 5.0 hours of astronomical darkness above 30° in March. It reaches 42° at its highest.
Framing
Its long axis is 7′. It fills 35 to 80% of the short side of an APS-C sensor at about 2540 to 5800 mm, and of a full-frame sensor at about 3900 to 8920 mm.
Filters and the moon
Galaxies are broadband targets. Filters cannot separate their light from light pollution, so dark skies and moon-free nights matter most. The dark sky calendar shows which nights this month are moon-free where you are.
Plan it for tonight
Dates and times depend on your exact location. The imaging planner shows M 84's altitude through tonight, its transit time and its distance from the moon. For sub length, use the exposure calculator.
Nearby targets
- M 86 0.3° away
- M 87 Virgo Galaxy 1.5° away
- M 99 Coma Pinwheel 2.2° away
- NGC 4216 2.2° away
- M 88 2.3° away
- M 89 2.6° away
Gear that suits M 84
M 84 is 7.4′ along its long axis. These frame it on an APS-C sensor with room to crop.
- Celestron C8 OTA 2032 mm f/10: fills 28% of an APS-C frame's short side View at High Point Scientific
- Celestron EdgeHD 8 OTA 2032 mm f/10: fills 28% of an APS-C frame's short side View at High Point Scientific
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