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af2 calibration lamps
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Autofib 2 & WYFFOS Calibration Lamps
Starting the Mimic
Comparison Lamps
Filter A
Filter B
Starting the mimic
Autofib and WYFFOS have calibration lamps and filters located at the
Nysmith focal plane of the telescope. This is an automated unit that is
under computer control. To activate the computer interface to this unit,
do the following in an xterm.
-
Telnet to andromeda.
-
Username: whtmimic
-
Password: *******
-
At the prompt type: start_wyffosCU
A graphical interface should now appear, giving you control of the filter
unit. The Comparison mirror should now be inserted to allow the light to
enter AF2 & WYFFOS. At the telescope control desk select Nysmith mirror:
-
Broken.
The filter unit has the following comparison lamps and filters available.
Comparison Lamps
-
Tung.
-
Neon.
-
Argon.
-
Copper argon.
Filter A
-
Empty.
-
ND 2.0
-
ND 3.0
-
ND 1.0
-
ND 0.5
-
Empty
Filter B
-
Empty.
-
TG 395
-
BG 38
-
Empty.
-
Empty.
-
Empty.
Select the filter and lamp required and activate them. Now an exposure
can be taken with the CCD. Afterwards, when all exposures have finished,
do the following:
-
Turn the comparison lamp off.
-
At the telescope control desk, return the Nysmith mirror back to GHRIL.
-
It is not necessary to close the graphical interface.
Sky viewing with the telescope can now take place.
