Warren Rupp Observatory.

Public observatory · Mansfield, Ohio

Warren Rupp Observatory

Warren Rupp Observatory is a public observatory in Mansfield, Ohio. It is open to the public.

Warren Rupp Observatory in brief

Open to the public
Yes
Bortle class
Not yet rated

Official site

Can you visit Warren Rupp Observatory? Yes

Richland Astronomical Society public nights and events at Warren Rupp Observatory (see wro.org and Night Sky Network).

A public night at an observatory usually starts at dusk with a short talk, then a line at the eyepiece of the main telescope for the Moon, a planet or a bright cluster, with volunteers' smaller telescopes set up outside. Dress for the night air even in summer: domes are not heated, so the telescope stays at outside temperature. Many nights sell out or cancel for clouds, so check the observatory's site on the day.

Warren Rupp Observatory
Warren Rupp Observatory

What Warren Rupp Observatory observes

Richland Astronomical Society

How dark the sky is at Warren Rupp Observatory

Warren Rupp Observatory has no Bortle rating in the list yet. The scale below shows what each class looks like.

1 mag 8.0 21.99+ 2 mag 7.5 21.89+ 3 mag 7.0 21.69+ 4 mag 6.5 20.49+ 5 mag 6.0 19.50+ 6 mag 5.5 18.94+ 7 mag 5.0 18.38+ 8 mag 4.5 18.00+ 9 mag 4.0
The Bortle scale. Each panel shows the class number, the faintest star the naked eye reaches at the zenith, and the darkest-edge sky brightness reading of that class in mag/arcsec².

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.

Warren Rupp Observatory among the observatories of Ohio

Dark sky place Research or private observatory Observatory open to the public

Green dots are observatories open to the public, blue dots research or private sites, squares dark sky places; select one for its page. See Ohio observatories for the full list.

The coordinates on this page point to zip 44901 (approximate): 40.851°N, 82.511°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 Warren Rupp Observatory

Nearest dark sky places

PlaceWhereBortleDistance
Cuyahoga Valley National ParkOhio592 km (57 mi)
Fry Family Park County ParkOhio5101 km (63 mi)
Point Pelee National ParkLeamington, Canada4126 km (78 mi)
Jesse Owens State ParkOhio3144 km (89 mi)
Observatory Park Park District ParkOhio4145 km (90 mi)
Burr Oak State ParkOhio4152 km (95 mi)

Other observatories open to the public within 150 km

  • Wilderness Center ObservatoryWilmot, Ohio, 77 km (48 mi). Star Watch nights with TWC Astronomy Club at the Wilderness Center (check events calendar)
  • Perkins ObservatoryDelaware, Ohio, 78 km (48 mi). Friday Evening Programs 8-10 pm, $10 by phone (740-363-1257), talk plus telescope viewing
  • Burrell Memorial ObservatoryBerea, Ohio, 79 km (49 mi). Burrell Observatory Lecture Series with observatory open house, monthly during the academic year; free
  • Swasey ObservatoryGranville, Ohio, 86 km (53 mi). Physics and Astronomy department open houses during the academic year (historic 9-inch refractor plus modern scopes)
  • Ritter ObservatoryToledo, Ohio, 126 km (78 mi). First Friday monthly the public planetarium program (7:30 pm, 8:30 pm May-Sep; $8 adults) observes with the Ritter 1m, weather permitting
  • Ritter Planetarium and Brooks ObservatoryToledo, Ohio, 129 km (80 mi). Friday evening planetarium shows ($8 adults) followed by telescope viewing at Brooks Observatory atop McMaster Hall, weather permitting

Astronomy clubs within 150 km

Star parties near Warren Rupp Observatory

Star partyNearDistanceUsual timing
Almost Heaven Star PartyRiverton, West Virginia349 km (217 mi)New-moon weekend in August
Green Bank Star QuestGreen Bank, West Virginia354 km (220 mi)Summer
StarfestAyton, Ontario379 km (236 mi)August new moon
Great Lakes Star GazeGladwin, Michigan384 km (239 mi)September new moon

Planning a trip? Astrotourism in Ohio 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.

Warren Rupp Observatory record

Every value in the observatories dataset for Warren Rupp Observatory
ID229
NameWarren Rupp Observatory
AddressHidden Hollow
CityMansfield
StateOH
Zip44901
CountryUSA
Webhttps://wro.org
Publicy
NotesRichland Astronomical Society
Lat40.85080
Lon-82.51140
LatLonSpotzip 44901 (approximate)
StatusActive
PublicNoteRichland Astronomical Society public nights and events at Warren Rupp Observatory (see wro.org and Night Sky Network)
Sourceshttps://wro.org/; https://wro.org/wp-content/uploads/2026/09/M111-Newsletter-September-2026.pdf

From the site's observatories dataset (observatories_q426). Distances are computed from the coordinates.