New Mexico State University Observatory


Latitude and longitude:+32:17:35, 106:41:52W (32.292974,-106.69781)
Elevation: 4931ft (1503m)
Site manager:  Jon Holtzman (NMSU)
Internet access:  3.8Mbps

Weather statistics: 40% photometric, 30% usable, 30% cloudy

Typical good seasons: April-May and September-October

Tortugas Mountain Observatory 0.61m telescope (TMO61)


Type: B&C Newtonian
Aperture: 24in (61cm)
Focal length: 3050mm
F-ratio: 5
Focuser: JMI

Type: torque tube
Pointing accuracy :  1arcmin
Computer: PC
Software: TheSky, MaxIm DL, ACP, ACP Scheduler
Telecope Advocate: Gary Walker

Typical seeing: 1.5arcsec
Best seeing: subarcsec
Vignetting: none
Scattered light:
Image defects: 

Type: QSI 683
Filter wheel: QSI internal (8pos)
Filters: BVgri
Exposure ratios/filter: 
Pixel count: 3326x2504x5.4micron
Pixel scale: 0.3211 arcsec/pix
Field of view:  17.8x13.4 (coma corrected)
Readnoise:  8e-
Full well: 25.5Ke-
Cosmetic defects:
Dark current:
Read time: 25sec
Shortest exposure: 
Compressed image size: 

Typical use of system   
Deep imaging, high angular resolution

Miscellaneous notes