Naylor Observatory.

Public observatory · Lewisberry, Pennsylvania

Naylor Observatory

Naylor Observatory is a public observatory in Lewisberry, Pennsylvania. It is open to the public.

Naylor Observatory in brief

Open to the public
Yes
Bortle class
Not yet rated

Official site

Can you visit Naylor Observatory? Yes

Astronomical Society of Harrisburg public observing nights at Naylor Observatory on scheduled weekend evenings (see ASH calendar).

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.

Naylor Observatory
Naylor Observatory

Telescopes at Naylor Observatory

17-inch,(2) 14-inch, 12.5-inch reflectors.

How dark the sky is at Naylor Observatory

Naylor 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.

Naylor Observatory among the observatories of Pennsylvania

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

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

The coordinates on this page point to zip 17339 (approximate): 40.146°N, 76.870°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 Naylor Observatory

Nearest dark sky places

PlaceWhereBortleDistance
Poe Paddy State ParkPennsylvania389 km (56 mi)
Poe Valley State ParkPennsylvania391 km (56 mi)
French Creek State ParkPennsylvania492 km (57 mi)
R. B. Winter State ParkPennsylvania398 km (61 mi)
McCalls Dam State ParkPennsylvania3100 km (62 mi)
Trough Creek State ParkPennsylvania4109 km (67 mi)

Other observatories open to the public within 150 km

  • Bucknell ObservatoryLewisburg, Pennsylvania, 92 km (57 mi). Free Public Observing Nights several times per semester (e.g. Mar 20 and Apr 25, 2026)
  • Maryland Space Grant ObservatoryBaltimore, Maryland, 94 km (58 mi). Free open houses on scheduled Friday evenings with the Morris W. Offit telescope (check observatory updates)
  • Crosby Ramsey Memorial ObservatoryBaltimore, Maryland, 100 km (62 mi). Rooftop observatory at Maryland Science Center; daytime sungazing and Friday evening stargazing events (see calendar)
  • Paul E. Hickes ObservatoryHuntingdon, Pennsylvania, 104 km (65 mi). Free Observatory Nights on scheduled Mondays 8-10 pm during semesters; no registration
  • Mt. Cuba Astronomical ObservatoryWilmington, Delaware, 114 km (71 mi). Monday 8 pm Public Nights (lecture plus viewing, max 28, $10 adults) and select Friday Family Nights; reservations required
  • Villanova ObservatoryVillanova, Pennsylvania, 130 km (81 mi). Open to the public Mon-Thu 7-9 pm per the Villanova Astronomical Society page; other times by appointment

Astronomy clubs within 150 km

Star parties near Naylor Observatory

Star partyNearDistanceUsual timing
Cherry Springs Star PartyCoudersport, Pennsylvania187 km (116 mi)June, near new moon
Black Forest Star PartyCoudersport, Pennsylvania187 km (116 mi)September
Shenandoah Night Sky FestivalLuray, Virginia225 km (140 mi)Late summer
Almost Heaven Star PartyRiverton, West Virginia279 km (174 mi)New-moon weekend in August

Planning a trip? Astrotourism in Pennsylvania 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.

Naylor Observatory record

Every value in the observatories dataset for Naylor Observatory
ID56
NameNaylor Observatory
Address670 Observatory Dr
CityLewisberry
StatePA
Zip17339
CountryUSA
Webhttps://www.astrohbg.org
Publicy
Telescope17-inch,(2) 14-inch, 12.5-inch reflectors
Lat40.14630
Lon-76.87000
LatLonSpotzip 17339 (approximate)
StatusActive
PublicNoteAstronomical Society of Harrisburg public observing nights at Naylor Observatory on scheduled weekend evenings (see ASH calendar)
Sourceshttps://sciencenearme.org/public-observing-night-at-naylor-observatory-12; https://www.onlyinyourstate.com/experiences/pennsylvania/naylor-observatory-pa

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