This page contains useful astronomical information for observers at the Allan I. Carswell Observatory.
Observatory Properties:
Longitude = -79° 30' 7.83" W = -79.5006061 W = 280.499394 E
Latitude =43° 46' 13.81" N
Altitude = 209m
Instrument FOVs:
1m focal length 6000mm
1m STXL: 15.9x10.6 arcminutes, 0.62 arsec/pixel (2x2)
1m Spectrograph: TBA
60cm focal length 9854mm
60cm STXL: 9.669x6.45 arcminutes
60cm Quail: TBA
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The AICO AllSky Camera can be seen here, a live view of the top of the observatory domes! Click REFRESH for the newest image (image refreshes every 30s). If frozen please report via email to observe @ yorku dot ca.
Telescope Times
LOCAL
Visibility chart usage:
Copy the coordinate set below and paste into the object visibility calculator.
Coordinate set for Object Visibility [LON(E) LAT (N) Alt (m) UT offset (h)]:
280.499394 43.770503 209 -5
*note UT offset may need to change with daylight savings, check the clock above.
Visibility Calculator:
Search the Observatory Logs:
A tool created by AICO member Denelle O'Neil using Python and HTML in 2025 to search our observatory logs and RETURN what days your object was observed (if any). To see more on Denelle's amazing code you can check out her .Helpful Links
THE SKY TONIGHT (CLEAR DARK SKY)
Weather:
Satellite Track TLE:
Asteroid Tracking/ephemeris:
Target Tools:
- ephemerides, coords, finder charts and more
- - Craters and More
- get RA DEC for tons of objects
Dr. Hyde's favorite handheld starchart
Make a finder chart for your object:
Select object name, use 2MASS catalog and adjust FOV to match instrument:
Precessed Coordinates Calculator:
Find the coordinates TODAY from your J2000 coordinates:
Data Reduction:
Designated Dark-Sky Sites in Canada
