Long Slit and Special Masks

Download these files to your local disk for use in data reduction.

Please note that all special masks are given a fake celestial location, and are designed to be useful anywhere in the sky. Please disregard the celestial coordinates in these files.

For IMACS:

The latest SMDF files for general masks used in IMACS are here.

• Long07.SMF
• Long09.SMF
• Long12.SMF
• Long15.SMF
• Long25.SMF

For LDSS:

Long Slits for LDSS

• longx.SMF
• longy.SMF
• lsblu.SMF
• lsmid.SMF
• lsred.SMF