Observatory Description

'Shadows' by Paul Ricketts

Brief History and Future

There has been an observatory of some type for over 50 years at the University of Utah. Older visitors in the ages of 60's and 70's visiting the observatory tell of when they were just 10 years in age, going to the U's observatory with their family to see Jupiter and Saturn. The observatory was built on the roof of the South Phyics building in 1976 and housed a 16 inch Cassegrain telescope which now resides at the Stansbury Park Observatory Complex. After the university was required to install an elevator, the observatory went through another change and was relocated to a different location on the roof. In 2001, The Willard L. Eccles Foundation donated funds to purchase new telescopes, cameras, a spectrograph, and other items for the observatory which is now on the roof of the South Physics building. New mounts and housings were installed for the telescopes and we have the observatory as we see it today.

The observatory is currently used to host our star parties, scout tours, and a classroom for the U's Observational Astronomy course (phys 2060/4060, astr 2060/4060). The Observational Astronomy course provides instruction on telescope use, astrophotography, basic and advanced astronomy research techniques. Class sizes range from 10 to 30 students per semester and is growing in popularity each year. Currently, the U offers a minor in astronomy and within the next few years (projected 2009), the U hopes to have a undergraduate major and graduate program in astronomy and astrophysics. For more information on the current minor offered by the U physics department, click here .

Once again, the Willard L. Eccles Foundation and the E.R. & E.W. Dumke foundation has donated funds for a new observatory for the University of Utah to be installed somewhere in southern Utah. It will be a robotic telescope remotely operated from the University for use by students and researchers at the U. At this time (Aug. 2008), a site has been located and efforts to receive land use permits and construction estimates are under way. The telescope purchased from DFM Engineering is an open truss Cassegrain design, fork mounted, 32 inch telescope. Projections of completion of the observatory are for August 2009. The type of research will include infared observations (if above 9300 ft. or 3000 meters), extra terrestrial planet searching, gamma ray bursts, and other research. For more information, visit the Southern Utah Observatory website.

Location



	

Physical Location: 125 S. 1400 E. Salt Lake City, UT 84112 Latitude: 40° 45' 59.09" Longitude: 111° 51' 0.67"Location provided by Google Earth®

Dome


Located on the roof of the South Physics building, we have a 14 foot diameter 360 degree, electrically rotated sky dome housing our 14" Meade LX200GPS telescope.

Observatory Dome, Venus, Moon

Telescopes


	

Four Meade 10" LX200 Classic telescopes
Specs:
Design: Schmidt-Cassegrain Aperture: 254 mm (10") Focal Length: 2500 mm (98.42 in) Focal Ratio: f/10 Resolving Power: 0.45 arc sec

One Celestron 11" mounted on Losmandy G-11
Specs:
Mount: Losmandy G-11 German Equatorial Design: Schmidt-Cassegrain Aperture: 280 mm (11.02 in) Focal Length: 2800 mm (110.24 in) Focal Ratio: f/10 Resolving Power: 0.42 arc sec

One Meade 12" LX200 Classic + Tracking Scope
Specs:
Main Scope:
Design: Schmidt-Cassegrain Aperture: 305 mm (12 in) Focal Length: 3045 mm (119.88 in) Focal Ratio: f/10 Resolving Power: 0.375 arc sec
Tracking/Wide Angle Scope
Manufacturer: Orion Design: Achromatic Refractor Aperture: 120 mm (4.72 in) Focal Length: 600 mm (23.62 in) Focal Ratio: f/5.0

14 in. Meade LX200GPS

One Meade 14" LX200 GPS + Tracking Scope
Specs:
Main Scope:
Design: Schmidt-Cassegrain Aperture: 356 mm (14") Focal Length: 3556 mm (140 in) Focal Ratio: f/10 Resolving Power: 0.321 arc sec
Tracking Scope:
Manufacturer: Celestron Design: Achromatic Refractor Aperture: 80 mm (3.14 in) Focal Length: 910 mm (35.83 in) Focal Ratio: f/11.7

Two Coronodo PST Solar Telescopes
Specs:
Design: Achromatic Refractor Aperture: 40 mm (1.57 in) Focal Length: 400 mm (15.7 in) Focal Ratio: f/10 Wavelenths: Hα @ 656.2 nm Bandwidth: < 1.0 Å at the Hα wavelength

One Orion XT 12 Dobsonian Intelliscope
Specs:
Design: Dobsonian Reflector Aperture: 305 mm (12 in) Focal Length: 1500 mm (59.06 in) Focal Ratio: f/4.9 Resolving Power: 0.38 arc sec

All Scopes (except the PST and Dobsonian) are permanently mounted on equatorial piers and kept safe from the elements by custom-made housings.


Imaging Equipment

Six Santa Barbera Instrument Group (SBIG) ST-7E CCD Cameras with CF-8 Color Filter Wheel
Specs:
Chip Design: Charge Coupled Device (CCD) Chip Size: 9 x 9 Microns Pixel Array: 768 x 512 Pixels, 6.9 x 4.6 mm Full Well Cap.: ~50,000 e- (ABG) ~100,000 e- (NABG) Quantum Eff: 50%@550nm; 60% @ 650nm; 30% @ 400nm Dynamic Range: 74 dB

Six Meade DSI Pro II Monochrome CCD Cameras
Specs:
Chip Design: Charge Coupled Device (CCD) Sony ICX285ALL Chip Size: 8.3 x 8.6 Microns Pixel Array: 752 x 582 Pixels, 5.59 x 4.68 mm Full Weel Cap.: ~18,000 e- Quantum Eff.: 65% @ 540nm; 40% @ 400/750 nm Readout Noise: 2.5e-/Pixel/s @ 15°C Dynamic Range: 7,200:1

One SBIG DSS-7 Deep Space Spectrograph with ST-7E Camera
Specs:
Slit Widths: 50, 100 and 200 µ Dispersion: 5.4 Å/pixel Resolution: 15 Å Spectral Range: 4130 Å Wavelength Range: 4500 to 8000 Å

One SBIG SGS Self Guiding Spectrograph with ST-7E Camera
Specs:
Gratings: 150 and 600 lines Per mm, 4.3 and 1.0 Å per pixel Slit Width: 18 and 72 µ Resolutions: 18 µ slit with 600 ln/mm: 2.4 Å 18 µ slit with 150 ln/mm: 10 Å 72 µ slit with 600 ln/mm: 10 Å 72 µ slit with 150 ln/mm: 38 Å
Specs with ST-7E:
Dispersion: 1.07 or 4.3 Å per pixel Resolution: 2.4, 10 or 38 Å FWHM Spectral Coverage: 750 Å w/ high res grating, 3200 w/ low res grating Wavelength Range: 3800 to 7500 Å

One SBIG AO-7 Adaptive Optics Unit
Specs:
Positioning: 10 milliseconds Read out rates: 40 per second Posistion error: 20% Mirror Range: +/- 50 Pixels ~ two arc minutes (for 80 in fl)

Photometric Filters:
Custom Scientific UBVRI Filter Set
Transmission:
U ~ 68% V ~ 85% B ~ 70% R ~ 81% I ~ 90%
Bandpass:
U ~ 300 - 400 nm V ~ 480 - 645 nm B ~ 350 - 680 nm R ~ 550 - 850 nm I ~ 700 - 1200 nm

Narrowband Filters:
Orion Hydrogen Alpha, Oxygen-III, and Sulphur-II 7nm Bandpass
Transmission:
Ha, O-III, S-II ~ 90%
Bandpass:
H-alpha ~ 656.3 +/- 3.5nm O-III ~ 500.7 +/- 3.5nm S-II ~ 672.4 +/- 3.5nm

Color Filters:
Meade LRGB Color Filter Set
Transmission:
R ~ 14% G ~ 24% B ~ 30%
Custom Scientific LRGB Color Filter Set
Transmission:
RGB ~ 90%
Bandpass:
R ~ 595 - 700 nm G ~ 450 - 625 nm B ~ 380 - 550 nm

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