|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+2[hours].
Date UTC-Time Az/Alt/Phase Event Duration
YYYYMMDD HH MM Dir/Deg/Day HH MM
20160926 07 09 45deg Moon culminate
20160926 10 40 Midday
20160926 15 11 WNW 26d old Moonset
20160926 16 36 W SUNSET
Twilight 02 22
20160926 18 58 Night 05 14
20160926 22 41 Midnight
20160927 00 12 ENE 27d old Moonrise
to E Moonlight 02 11
20160927 02 23 Twilight 02 23
20160927 04 46 E SUNRISE
Day 11 47
20160927 07 58 42deg Moon culminate
20160927 10 40 Midday
20160927 15 35 WNW 27d old Moonset
20160927 16 33 W SUNSET
Twilight 02 22
20160927 18 55 Night 06 31
20160927 22 40 Midnight
20160928 01 26 ENE 28d old Moonrise
to E Moonlight 01 00
20160928 02 26 Twilight 02 22
20160928 04 48 E SUNRISE
Day >01 44
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.