ALFOSC permanent set-up for P55
All the wheels in ALFOSC have 8 positions, 7 of which can be used for
optical components while the 8th must remain `free'. For operational
reasons and for Target-of-Opportunity and/or monitoring programs as
approved by the NOT Observing Programs Committee (OPC), several of the
positions in each wheel must have a fixed set-up as listed below.
During Nordic observing nights (i.e., any observing run for proposals
with numbers in the range 001-199) the elements marked `ToO' should be
installed at all times. The only exception would be if the regular
observing program as approved by the OPC specifically requested more
optical elements in the proposal form than there are slots available.
Note that any modifications made later in the NIRF (the `NOT
Instrument set-up Request Form' that is sent to observers approx. 1
month before the start of their observing run) must leave the `ToO'
The most used spectral ToO setup is Grism #4 with Slit_1.0,
so it is best to not take those items out ever.
The 10.0 arcsec slit is intended as mask for use with the WeDoWo and
can be removed if the WeDoWo is not mounted.
For Spanish CAT (numbers 201-299) and ITP (numbers 301-399) proposals
the elements marked `ToO' can be changed without any limitations.
Optical elements which should be
available at all times |
FASU A: SDSS u #109 (ToO)|
FASU A: SDSS g #120 (ToO)
FASU A: SDSS r #110 (ToO)
FASU A: SDSS i #111 (ToO)
FASU A: SDSS z #112 (ToO)
FASU A or B: blocking filter #94 WG345 356_LP (ToO)
FASU FAPOL: lambda/2 (Mon)
|Aperture wheel, eight slots|
1.0 arcsec long slit (ToO)
1.3 arcsec long slit (ToO)
0.5 arcsec long slit (Mon)
1.8 arcsec long slit (ToO)
10.0 arcsec long slit (ToO)
|Grism wheel, eight slots|
Grism #4 (ToO)
Grism #18 (ToO, Mon)
Grism #3 (ToO)
Grism #7 (ToO)
|Filter wheel, eight slots|
Grism #11 (ToO)