Blue Channel Observing Form

Required fields are marked in red with an asterisk ( * ).

Please tab between fields or click with the mouse; hitting enter may result in premature submission of your form.

Observing Program *Dates Scheduled
Skip if program not listed. To select >1 program hold down ctrl key (command key on MACs). (Please indicate any half-nights.)

*Principal Investigator Colleagues
*Actual Observer(s) No. of observers /
*E-Mail Address Arrival Time at MMT
If "Yes", when was the last time?
Departure Time from MMT



(Remote observing: if you will be observing remotely, please note so in the "Comments" section above and list your email and phone numbers below.)
Observer Name & Email Address Billing Address *Phone Number Dates Check-In / Check-Out


Observers are expected to prepare catalogs of their observing lists prior to their run and to submit them well in advance of their scheduled observations. The catalog submission page can be found at


The MMTO maintains on-line documentation. To obtain current information on the spectrograph, detector status, etc., go to the following URL:

Note: Observers are strongly encouraged to obtain evening flats rather than morning flats. Morning calibrations may require additional MMT staff support.
*Do you require twilight flats?       If "yes",
*Do you require morning calibrations?
If yes, please specify

A. GRATINGS: Check a maximum of three (3) gratings you plan to use during your run. Please list the central wavelength(s) at which you expect to set the spectrograph so that, where possible, it can be set up in advance by the Instrument Specialist.

Grating (Blaze)  
Wavelength A
300 (~4800 A in 1st) 6.47 A 5268 A
500 (~5410 A in 1st) 3.79 A 3198 A
800 (~4050 A in 1st) 2.34 A 2016 A
600 (~4800 A in 2nd) 1.45 A 1344 A
832 (~3900 A in 2nd) 1.02 A 968 A
1200 (~4830 A in 1st) 1.45 A 1344 A
Echellette 0.39 A (If interested, contact Joannah Hinz at

*Resolution is FWHM of an unresolved line through a 1 arcsec slit.

B. FILTERS: Please specify any special filters needed in the upper or lower filter wheels. Remember that these filters must be installed before the spectrograph is mounted to the telescope. Please refer to the telescope schedule.

Special filter(s):     

C. SLITS: The aperture wheel has provision for 7 slit plates. One of these positions has been modified so that its occupant can be changed without removing the spectrograph from the telescope. Normally you will find the following slit plates in the aperture wheel:

1.0" x 180" long slit
1.25" x 180" long slit
1.5" x 180" long slit
2.0" x 180" long slit
3.5" x 180" long slit
5.0" x 180" long slit

You can select one other slit to be mounted in the interchangeable position from the following list

0.75" x 180" long slit (default installation)
2.00" x 180" long slit
3.50" x 180" long slit
5.00" x 180" long slit

The following 20" are for Echellette only
1.00" x 20" long slit
1.25" x 20" long slit
1.50" x 20" long slit
2.00" x 20" long slit
3.50" x 20" long slit
5.00" x 20" long slit

"Comb" - 1" holes on 10" centers
1.25" x 90" crossed slit (for prism dispersion)
2" x 3" double short slits
1" x 2.6" double short slits
3" single circle
1.0" double circles
1.4" double circles

If you have any special requirements, please contact Mike Alegria (520-879-4555, malegria@mmto) as soon as possible.