M95 (NGC 3351) Observation Guide — Barred Spiral Galaxy in Leo
Overview
M95 is a barred spiral galaxy in Leo, catalogued as NGC 3351. Its apparent Magnitude is 9.7, and it lies approximately 38 million light-years from Earth. Best conditions for observing this object arrive in spring, and it's considered a target for experienced observers.
Barred spiral galaxies are distinguished by a bar-shaped structure crossing the central nucleus, with spiral arms extending from both ends of the bar rather than directly from the centre.
Basic Data
| Field | Data |
|---|---|
| Messier number | M95 |
| Catalogue number | NGC 3351 |
| Object type | Barred spiral galaxy |
| Constellation | Leo |
| Apparent Magnitude | 9.7 |
| Distance | ~38 million light-years |
| Best season | Spring |
| Difficulty | Advanced |
| Recommended equipment | Mid-aperture telescope |
Physical Characteristics
M95 sits roughly 38 million light-years away and shines at apparent Magnitude 9.7.
The Messier catalogue represents a curated set of relatively bright deep-sky objects — while the universe contains hundreds of billions of galaxies, these are the ones accessible to amateur telescopes under reasonably good conditions.
Observing Guide
Finding M95
M95 lies within the boundaries of Leo. It transits around 20:00–22:00 in spring, reaching its highest point and most accessible position. Start by identifying the main stars of Leo, then use a star chart or astronomy app to pin down the precise coordinates.
Observing Tips
Galaxies reward dark skies and larger apertures. Keep magnification low for a wide field of view, and give your eyes at least 15–20 minutes to fully dark-adapt before attempting faint objects.
Recommended Equipment
A mid-aperture telescope works best for this object. An aperture of 80 mm or larger under a dark sky is the minimum recommended setup.
Astrophotography Tips
M95 is a popular astrophotography target. The fundamentals are Polar alignment and guided tracking via an Equatorial mount, high ISO settings, and long exposures (30 seconds to several minutes). Stacking multiple frames reduces noise and brings out detail that a single exposure never reveals.
Summary
M95 is an advanced-level barred spiral galaxy in Leo. A mid-aperture telescope is needed to appreciate its structure. Spring nights are the right time to give it a try — patience and dark skies are well rewarded.
Specifications
| Object Type | 棒渦巻銀河 |
| Messier Number | 95 |
| Magnitude | 9.7 |
| Constellation | Leo |
| Best Season | spring |
| Difficulty | advanced |
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