WFPC2 photometry from subtraction of TinyTim PSFs

Details WFPC2 photometry from subtraction of TinyTim PSFs WFPC2 photometry from subtraction of TinyTim PSFs

Jan 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997hstc.work..374r&link_type=abstract

The 1997 HST Calibration Workshop with a New Generation of Instruments, p. 374

Statistics

Computation

5

Point Spread Functions, Image Processing, Calibrating, Computational Grids, Astronomical Photometry, Iteration, Quasars, High Resolution, Vibration, Cameras, Subtraction

Scientific paper

Based upon the subtraction of TinyTim Point Spread Function (PSFs) from Principle Component Image (PC1) point-like objects, a method has been developed to determine the optimal values for the telescope jitter and the Z4 relative focus during calibration or science observations. Using these jitter and focus values, an optimal TinyTim PSF, computed over a resampled grid, is then iteratively fitted to the object, yielding an improvement in the PSF centering, more accurate photometric results and a better detection of underlying structures. Preliminary results seem to indicate that appropriate synthetic TinyTim PSFs perform as well as observed PSFs.

Affiliated with

Also associated with

No associations

Rating

WFPC2 photometry from subtraction of TinyTim PSFs does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with WFPC2 photometry from subtraction of TinyTim PSFs, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and WFPC2 photometry from subtraction of TinyTim PSFs will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1788473