CAPABILITIES, INSTRUMENT MODES and AOTs

The three main PHT observing modes are photometry, spectrophotometry and polarimetry. In the photometric mode PHT offers a number of possibilities to observe point-like and extended sources. The observations can be made with the chopper.

In the following sections these modes are described in detail. Chopping is regarded here as a general procedure applicable to several modes.

• Chopping
• Photometry - Single pointing multi-filter/multi-aperture
• Photometry - Multi-filter/multi-aperture rastering
• Photometry - Absolute photometry
• Photometry - Scans and Maps
• Photometry - Sparse maps
• Polarimetry
• Spectrophotometry

• Chopping
• Single-Pointing Multi-Filter and Multi-Aperture Modes
• Raster Mode
• Absolute Photometry
• Linear Scans and Maps
• Sparse Maps
• Spectrophotometry
• Polarimetry