Can you visit Ralph B. Baldwin Observatory? No regular public access
Teaching observatory on Albertus Hall roof; no regular public schedule found.
For telescope views near Ralph B. Baldwin Observatory, see the observatories open to the public and astronomy clubs nearby; clubs hold free public star parties.

What Ralph B. Baldwin Observatory observes
The list does not describe the instruments at Ralph B. Baldwin Observatory yet; the official site has them.
How dark the sky is at Ralph B. Baldwin Observatory
Ralph B. Baldwin Observatory has no Bortle rating in the list yet. The scale below shows what each class looks like.
Sky brightness and class come from the World Atlas of Artificial Night Sky Brightness (Falchi et al. 2016, CC BY-NC 4.0), with natural skyglow added, at the coordinates below. Research telescopes are often sited on mountains above the haze, so the real sky can be darker than the map suggests.
Ralph B. Baldwin Observatory among the observatories of Michigan
Green dots are observatories open to the public, blue dots research or private sites, squares dark sky places; select one for its page. See Michigan observatories for the full list.
The coordinates on this page point to zip 49506 (approximate): 42.944°N, 85.621°W.
Map data © OpenStreetMap contributors. Open the larger map · Directions. Mountain observatory roads are often gated after dark; go only on a scheduled public night.
Dark sky places, observatories and clubs near Ralph B. Baldwin Observatory
Nearest dark sky places
| Place | Where | Bortle | Distance |
|---|---|---|---|
| Huron-Manistee National Forest | Michigan | 3 | 104 km (65 mi) |
| Dr. T.K. Lawless County Park | Michigan | 4 | 118 km (74 mi) |
| Beverly Shores Dark Sky Community | Indiana | 4 | 179 km (111 mi) |
| Indiana Dunes National Park | Indiana | 4 | 181 km (113 mi) |
| Sleeping Bear Dunes National Lakeshore | Michigan | 2 | 215 km (133 mi) |
| Hawthorn Woods Dark Sky Community | Illinois | 6 | 215 km (133 mi) |
Other observatories open to the public within 150 km
- Calvin University ObservatoryGrand Rapids, Michigan, 6 km (4 mi). Open to visitors on clear weeknights Mon-Fri during semesters (7:30-11 pm, later after DST); Wednesdays only in summer; call the dome to check
- James C. Veen ObservatoryLowell, Michigan, 21 km (13 mi). GRAAA public nights on 2nd and 4th Saturdays Apr-Oct when clear; $5 adults, $3 youth; Starwatch line 616-897-7065
- Fox Park Public ObservatoryPotterville, Michigan, 79 km (49 mi). Eaton County Parks observatory run with Capital Area Astronomy Association volunteers; public nights in season (see Night Sky Network calendar)
- Michigan State University ObservatoryEast Lansing, Michigan, 92 km (57 mi). Free public observing nights on about 13 Saturdays Apr-Oct, no registration
- Brooks Astronomical ObservatoryMt. Pleasant, Michigan, 93 km (58 mi). Monthly public open nights during the academic year (since 1976)
Astronomy clubs within 150 km
- Grand Rapids Amateur Astronomical AssociationLowell, Michigan, 5 km (3 mi). Meets Monthly in winter, spring and autumn at Grand Rapids Public Museum
- Shoreline Amateur Astronomical AssocHolland, Michigan, 42 km (26 mi). Meets Monthly membership meetings Sep-May (none in summer); see holland-saaa.org for venue
- Muskegon Astronomical SocietyMuskegon, Michigan, 56 km (35 mi). Meets Monthly business meeting at the MAS Observatory (Muskegon County Wastewater site)
- Kalamazoo Astronomical SocietyKalamazoo, Michigan, 76 km (47 mi). Meets 1st Friday most months, 7 pm
- Capital Area Astronomy AssociationEast Lansing, Michigan, 96 km (60 mi). Meets Monthly, Wednesday 7 pm
Star parties near Ralph B. Baldwin Observatory
| Star party | Near | Distance | Usual timing |
|---|---|---|---|
| Great Lakes Star Gaze | Gladwin, Michigan | 147 km (91 mi) | September new moon |
| Bootleg Fall Star Party | Harmon, Illinois | 352 km (219 mi) | Autumn new moon |
| Bootleg Spring Star Party | Harmon, Illinois | 352 km (219 mi) | Spring new moon |
| Starfest | Ayton, Ontario | 397 km (246 mi) | August new moon |
Planning a trip? Astrotourism in Michigan puts the dark sky places, observatories, clubs, star parties, planetariums and science centers of the state on one map, with the best night out worked out.
Ralph B. Baldwin Observatory record
Every value in the observatories dataset for Ralph B. Baldwin Observatory
| ID | 14 |
|---|---|
| Name | Ralph B. Baldwin Observatory |
| Address | Albertus Hall roof, Aquinas College, 1700 Fulton St E |
| City | Grand Rapids |
| State | MI |
| Zip | 49506 |
| Country | USA |
| Web | https://aquinas.edu/baldwin-observatory/index.html |
| Public | n |
| Lat | 42.94400 |
| Lon | -85.62130 |
| LatLonSpot | zip 49506 (approximate) |
| Status | Active |
| PublicNote | Teaching observatory on Albertus Hall roof; no regular public schedule found |
| Sources | https://aquinas.edu/baldwin-observatory/index.html |
From the site's observatories dataset (observatories_q426). Distances are computed from the coordinates.