Wfpc2 pixel size. 2 Mode = IMAGE Configuration = WFPC2 The IMAGE Mode is the only one available to GOs with the WFPC2 configuration. (1994, ApJ, 435, L3) A more detailed assessment of its capabilities: Holtzman et al. The four CCDs provide a 1600 x 1600 pixel field-format; three of the 800 x 800 CCDs have 0. They are all 800x800 pixels - also the smaller PC (Planetary Camera chip in the upper left corner). For example, the four WFPC2 CCDs, each having a size of 800 x 800 pixels, would be stored in a waivered FITS file as a 800 x 800 x 4 pixel data cube, while in MEF format as four FITS extensions each containing a 800 x 800 pixel image. The WFPC2 has two readout formats, namely full single pixel resolution (FULL Mode), and 2x2 pixel summation (AREA Mode). Early IDT report of the WFPC2 on-orbit performance: Trauger et al. 9, while the fourth (the PC chip) was imaged separately with a focal ratio of F/28. Consequently The WFPC2 was installed in HST during the First Servicing Mission in December 1993. The STSDAS task wmosaic provides a convenient way to piece the four groups into a single image comprising the full WFPC2 field of view. However, the optics were set up so that 3 of the chips (the WF chips) were imaged using a focal ratio of F/12. Jun 4, 2017 · WFPC2 is/was an array of four equal-sized CCD chips, each with 800 x 800 15-micron-wide pixels. 10 arcsec at the center of each CCD. This task, in its default mode, will combine the four chips into a large, 1600 x 1600 pixel image at the resolution of the Wide Field cameras, resampling the pixels and correcting for the chip overlap, rotations, and geometric distortion. 046′′ pixels (PC). The CCDs are physically oriented and clocked so that the pixel read-out direction is rotated approximately 90 ̊ in succession (see Figure 1. It was built at the Jet Propulsion Laboratory by an Investigation Definition Team (IDT) headed by John Trauger, as a replacement for the first Wide Field and Planetary . 1). Each line of science data is started with two words of engineering data, followed by 800 (FULL) or 400 (AREA) 16-bit positive numbers as read from the CCDs. The now decommissioned WFPC2 camera is a combination of four 800×800 pixel CCDs. WFPC2 featured four identical CCD detectors, each 800x800 pixels. Three wide field CCDs (WF2–WF4) each provide a 800x800 pixel format with a pixel size of 0. The planetary CCD (PC1) provides higher spatial resolution and a correspondingly smaller field of 9. Three wide field CCDs (WF2-WF4) each provide a 800x800 pixel format with a pixel size of 0. (1995, PASP, 107, page 156 and page 1065). The advantage of AREA mode is that the readout noise for the “larger” pixels (6 e– per pixel) is nearly the same as the readout noise for unsummed pixels (5 e– per pixel). 3. to about 1 mm. This afforded a more detailed view over a smaller region of the visual field. The four CCD chips are so close that the seams between them are difficult to see. 1′′ pixels (WFC), and one has 0. The older Wide Field Planetary Camera-2 (WFPC2) and the newer Advanced Camera for Surveys (ACS). Three of these, arranged in an L-formation, comprise Hubble's Wide Field Camera (WFC). Each of the four cameras contains an 800x800 pixel Loral CCD detector. WFPC2 data are stored in MAST as both MEF and waivered FITS files. The WFPC2 field-of-view is divided into four cameras by a four-faceted pyramid mirror near the HST focal plane. 10x0. The planetary CCD (PC1) provides higher spatial resolution . ument Overview The Wide Field and Planetary Camera 2 (WFPC2) is a two-dimensional imaging device covering a wavelength range from Lyman-a. The WFPC2 configuration provides the largest field of view of any instrument on HST. The IMAGE Mode is the only one available to GOs with the WFPC2 configuration. Adjacent to them is the Planetary Camera (PC), a fourth CCD with different (narrower-focused) optics. ahfyk t7s4wkck duiwz k6 4oywisa jylma od 61dig3v lp zupnk