|The 90 cm Westerlund Telescope, Ångström Laboratory, Uppsala
Lon. 17 38 51.8E, Lat. 59 50 14.9N, Alt. 51 m
Left to right: Installation, primary mirror, CCD camera, dome shutter opening, telescope truss tube
Local time is UTC+1[hours].
Date UTC-Time Az/Alt/Phase Event Duration
YYYYMMDD HH MM Dir/Deg/Day HH MM
20181113 22 34 Midnight
20181114 04 15 Twilight 02 28
20181114 06 43 SE SUNRISE
Day 07 40
20181114 10 33 Midday
20181114 12 30 SE 7d old Moonrise
20181114 14 23 SW SUNSET
Twilight 02 29
20181114 16 17 11deg Moon culminate
20181114 16 52 S to SW Moonlight 03 13
20181114 20 05 SW 8d old Moonset
Night 08 12
20181114 22 34 Midnight
20181115 04 17 Twilight 02 29
20181115 06 46 SE SUNRISE
Day 07 35
20181115 10 33 Midday
20181115 12 51 ESE 8d old Moonrise
20181115 14 21 SW SUNSET
Twilight 02 29
20181115 16 50 S to WSW Moonlight 04 27
20181115 17 04 14deg Moon culminate
20181115 21 17 WSW 9d old Moonset
Night >00 23
Astronomical almanac for this location around the time of the last page load. Times are rounded to the nearest minute.
Red: The Sun rises.
Cyan: Twilight condition.
Green: Astronomical night.
Yellow: The Moon is up during night conditions.
Black: Additional information.
The Westerlund telescope was installed in its 6 m diameter dome on the fifth floor of Ångström Laboratory in October, 2003. It is a 90 cm classical Cassegrain reflector with two Nasmyth foci for semi-permanent mounting of different types of instrumentation. The main purpose of the telescope is undergraduate education and introduction to practical astronomical observation methods. The telescope is also used for professional research projects.
Left to right: M57 observed with the Westerlund Telescope, Rosetta space craft fly-by 050304, Comet 17P Holmes 071119 (median filtered)
- Double filter wheel and ST1001E camera mounted at left Nasmyth focus.
- UVRI filters installed in internal ST1001E filter wheel (open position available).
- Eyepiece mounted at right Nasmyth focus.
- Tube sock is not mounted.
- Script available to add FITS header keywords during sequence imaging.
- Safety information (local access)
- Telescope information
- The flatfield system project
- The dome control project
- The sub-aperture and tube sock project
- Sub-aperture mask (local access)
- Light-shielding tube cover (local access)
- Wind protecting slit cloth (local access)
- Flatfield screen (local access)
- Applying for observing time
- Almanac and observing schedule
- Daytime observations (local access)
- Standard objects
- Observing aids
- Observation log
- User manual (local access)
- Data archiving (local access)
- Archive search
- Technical information
- Cabling (local access)
- Control software
- Derotator (local access)
- Dome (local access)
- Errors and problems (local access)
- Filter wheels (local access)
- Hand paddle (local access)
- Maintenance (local access)
- Support equipments (local access)
- Telescope and instrument status (local access)
- Image gallery
- Telescope and site
- Astronomical objects
- Add an image to the gallery (local access)
- Undergraduate exam project opportunities in astronomy ("Förslag på examensarbeten")
- Special-event/sky shows/visits
Prof. Nikolai Piskunov
Dr. Ola Karlsson (gallery maintenance)
PhD. Anna Önehag
Phone to telescope control room: 018-471 3038
For all telescope/site related inquiries, please send an email to .
Note: The telescope is not open for public nighttime use. Please refer to the telescope shows in the observatory park.