at the 61"...
- There is an alarm code now activated at the 61". Please make sure that you contact Mountain Operations to learn the new code before your next observing run.
- The BigGuider autoguider
has now been commissioned for general use at the Kuiper Telescope.
The guiding system allows for long exposures using the Mont4K
Please see the BigGuider manual
for details on its capabilities and operation.
- IMPORTANT NOTICE TO OBSERVERS:
Mont4K (a 4Kx4K device) is the facility imager.
Observers wishing to do imaging projects using the Kuiper telescope
should make arrangements to be certified to operate the new instrument well
before their anticipated observing run.
Contact Betsy Green (email@example.com) to find out more information about Mont4K and to make arrangements
to be certified to use the instrument.
- LATE ARRIVING OBSERVERS:
If you arrive at the observatory after dark, you are
to turn off your headlights after proceeding past the gate! Careless
observers arriving late have ruined several observations.
Please remember that you are not the only observer on Mt. Bigelow. If you are
unable to disable the daylight running lights of your vehicle (usually
accomplished by very lightly engaging the parking brake), you are required to
park in a location OUTSIDE of the gate that does not obstruct traffic and walk the rest of
the way to the dome (remembering that you are risking being ticketed by
the Forest Service in this location).
Of course, showing up and actually being ready to observe BEFORE it gets dark is
the best way to avoid being a nuisance to other observers.
- Observers needing keys to the facility need to see Erica Baker
in Room 358 (621-7659; firstname.lastname@example.org).
If Erica is not available, keys can be checked out by observers from Room N204
(see Michelle Cournoyer; 621-2288;
Please make sure that you promptly return borrowed keys after the end of your
- Observers are able to connect their personal computers to the network
via 10/100baseT Ethernet DHCP connectors installed at the
61". WIFI is also available in the dome and dormatory.
- Often, there are changes made
to the published telescope schedules to better accommodate scheduled
observers. If you are interested in applying for TBS time, please
consult the updated web version of the Steward Observatory
telescope schedule to choose
appropriate open nights.
Telescope & Site
- Elevation: 2510 m = 8235 ft.
- Latitude: +32° 24' 59.3" N
- Longitude: 110° 44' 04.3" W
These coordinates are accurate to about 1".
- Time Zone: +7 hours
- Primary Mirror Diameter: 1.54 m = 61 inches
- Primary Focal Ratio: f/4
- f/13.5 Cassegrain focus
- Plate Scale: 100 microns/arcsec = 10.0 arcsec/mm (nominal)
- Useful Field of View: >435 arcsec diameter
- Secondary Diameter: 40.96 cm
- f/45 Cassegrain focus
- Plate Scale: 351 microns/arcsec = 2.85 arcsec/mm (nominal)
- Useful Field of View: >325 arcsec diameter
- Secondary Diameter: 14.5 cm
Back to the
Steward Observatory Home Page.
The 61" cognizant observer is