M26 (NGC 6694) Observation Guide — Open Cluster in Scutum
Overview
M26 is an open cluster in Scutum, catalogued as NGC 6694. At Magnitude 8, it lies about 5,000 light-years away. Summer is its best season, and the cluster suits intermediate observers.
Open clusters are loose groupings of young stars formed from the same molecular cloud. They trace the disk of the Milky Way and typically contain relatively young stars.
Basic Data
| Item | Data |
|---|---|
| Messier Number | M26 |
| Catalog Number | NGC 6694 |
| Object Type | Open Cluster |
| Constellation | Scutum |
| Apparent Magnitude | 8 |
| Distance | ~5,000 light-years |
| Best Season | Summer |
| Difficulty | Intermediate |
| Required Equipment | Small telescope |
Physical Characteristics
M26 lies about 5,000 light-years away and shines at Magnitude 8, with dozens to hundreds of stars packed into its field.
Observation Guide
Finding It
M26 sits in Scutum. Summer evenings around 8–10 PM bring it to a useful elevation. Use Scutum's main stars as reference points, then pin down M26's precise location with a star chart or app.
Tips for Observing
Low magnification through binoculars or a small telescope shows the cluster at its best. Wide-field views preserve the visual context of the surrounding Milky Way star field. Star colors add interest.
Recommended Equipment
A small telescope is recommended — an aperture of 80 mm or more under dark skies gives the best results.
Astrophotography Tips
Prime focus imaging through a tracking telescope is the right approach. Choose an exposure time that captures the cluster's star population against the Milky Way background.
Summary
M26 is an intermediate-level open cluster in Scutum, embedded in one of the richest parts of the summer Milky Way. A small telescope is required, but the surrounding star fields make the region particularly rewarding.
Specifications
| Object Type | 散開星団 |
| Messier Number | 26 |
| Magnitude | 8 |
| Constellation | Sct |
| Best Season | summer |
| Difficulty | intermediate |
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