The 31-inch (79 cm.) Tinsley reflector is located on Fan Mountain. The telescope is a general use reflector originally used with photomultipliers and a photographic plate spectrograph. Currenty extensive hardware upgrades and instrumentation efforts are underway to transform the observatory into a more modern research facility capable of IR imaging and grism spectroscopy. This upgrade and instrument project is funded through an NSF grant. Projects in the upgrade include: a drive system upgrade, a new IR Carmera, and an autoguider.
Due to the status of this upgrade project the 31-inch will only be avaialable for public nights, twice a year. For more information about the project or use of the telescope please contact Michael Skrutskie (mfs4n@virginia.edu)
The 31-inch (79 cm.) Tinsley reflector is located on Fan Mountain. Here is some information about the telescope.
Comments | |
Primary | 31 inches in diameter, 120-inch focal length, 6.25 inches thick, |
wt. = 368.8 lbs., the hole is 8.75 inches in diameter. All | |
mirrors are Pyrex. | |
4X Secondary | 8.48 inches in diameter, 1.75 inches thick. System focal length |
480 inches. f/16 | |
8X Secondary | 5.474 inches in diameter, 0.875 inches thick. System focal |
length 960 inches. f/32 | |
Plate scale | 16.9 arcsec/mm (calculated). Measured value = 16.2 (Zissel) |
to 17.5 (Rosenberg) arcsec/mm. | |
Limiting visual magnitude | Estimated at approximately 16 mag. on the best nights. |
Dome | 24 ft. Observa-dome. |
Field | Power | ||
Finderscope | 5" Maksutov | 30' | 75X |
3" finder | 2-3 | 15X | |
Eyepiece | Black | 15' | |
25 mm. + Xfer system | 2.75' | 960X | |
25 mm. | 6' | 480X | |
12.7 mm. | 2' | 950X |