CFHT operating manual - Homepage Usask

More documents

Recommendations

Info

<strong>CFHT</strong> Observatory Manual - Observatory (Sec.4) http://www.cfht.hawaii.edu/Instruments/ObservatoryManual/CFH... For computations of light throughput, it is interesting to note that a 20th magnitude object gives at 5500 Å flux of 1 photon/second/Å. This number, of course, has to be multiplied by the transmission of the system: atmosphere + telescope (including central obscuration) + instrument + detector. The main optical characteristics at the different focii are summarized in the table below: 2 of 17 08/07/04 11:26 PM
<strong>CFHT</strong> Observatory Manual - Observatory (Sec.4) http://www.cfht.hawaii.edu/Instruments/ObservatoryManual/CFH... The optical configurations are altered by interchanging three upper ends: Prime Focus and Coudé Cassegrain f/8 (CAFE - fiber fed Coudé operates in the Cassegrain configuration) Cassegrain f/35 (infrared) - This focus is no longer available (Decommissioned in 2000) Interchange takes at least 3 hours and cannot be done at night. While observing, the dome slit is aligned automatically with respect to the telescope. The shutter is normally fully opened during the night but can be closed partially to reduce wind loads. A windscreen can also be raised. Observers are warned that dome rotation is quite slow, with a maximum speed of 45 degrees per minute of time. The telescope area is maintained at the proper temperature by a chilled floor system. The floor cooling normally operates 24 hours a day. It will be shut down, however, during summit storms and takes roughly a day to stabilize once turned back on. Experience has shown that the seeing is degraded if the floor cooling is shut off. Alternatively, during high humidity conditions, the floor cooling can cause severe icing, detrimental to electronic equipment and optics. The telescope is controlled during the night by the Observing Assistant (or OA) only. This includes all aspects of telescope opertation, support systems (computer, electronic, and mechanical), and telescope orientation, slewing and guiding on the field requested by the observer. 3 of 17 08/07/04 11:26 PM
Page 1 and 2: CFHT Observatory Manual - cover htt
Page 3 and 4: CFHT Observatory Manual - Table of
Page 5 and 6: CFHT Observatory Manual - Intro (Se
Page 7 and 8: CFHT Observatory Manual - Site (Sec
Page 15 and 16: CFHT Observatory Manual - Observato
Page 25 and 26: CFHT_ObservatoryManual_Floor1 http:
Page 31: CFHT Observatory Manual - Observato
Page 59 and 60: CFHT’s Web page for ESPaDOnS http
Page 61 and 62: Home Page of ESPaDOnS project http:
Page 63 and 64: ESPaDOnS: instrument details and co
Page 65 and 66: ESPaDOnS: spectral domain and resol
Page 67 and 68: ESPaDOnS: spectral response and glo
Page 69 and 70: ESPaDOnS: thermal response and spec
Page 71 and 72: ESPaDOnS: performances of Fresnel r
Page 73 and 74: ESPaDOnS: ccd readout modes and cha
Page 75 and 76: ESPaDOnS: control software and user
Page 77 and 78: ESPaDOnS: viewing, guiding and expo
Page 79 and 80: ESPaDOnS: temperature and pressure
Page 81 and 82: ESPaDOnS: observing procedures http
Page 83 and 84:
ESPaDOnS: data reduction routines h
Page 85 and 86:
ESPaDOnS: instrument status http://
Page 87 and 88:
ESPaDOnS: description of critical i
Page 89 and 90:
ESPaDOnS: examples of frames http:/
Page 91 and 92:
ESPaDOnS: examples of spectra http:
Page 93 and 94:
ESPaDOnS: picture gallery http://we
Page 95 and 96:
Page 97 and 98:
Page 99 and 100:
ESPaDOnS: project team and budget h
Page 101:
ObservatoryManual - Maps http://www
show all

CFHT operating manual - Homepage Usask

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?