I. Starting with a New Observing Run

1. Reading from Tape

2. Crosstalk

3. Revising the bad pixel mask

4. Saturation

5. Gain and Read-noise

II. Reductions.

0. Preliminaries

1. Biases

2. Flats

A. Removing the Ghost Pupil from the Flats (KPNO only)

B. Making a Good Ghost Pupil for Subsequent Use (KPNO only)

3. CCDproc

4. Ghost Removal (KPNO only)

5. Revising the WCS:

A. MSCgetcatalog

B. Fixing Higher Order Terms

C. MSCcmatch

6. Geometrical transformation with mscimage

7. Stacking the images to make the Atlas

A. Matching Intensity: Philmatch

B. MSCstack

C. Shifting the stacked images

8. Preparing the images for photometry.

III. Photometry

1. Introduction.

2. Breaking apart the frames.

3. Autophot: Doing the photometry.

A. Characterizing the frames: character.cl

B. Doing the preliminaries: prelim.cl

C. Picking PSF stars: pickem.cl

D. PSF Fitting: stetson.cl

E. Removing Saturated Stars: unsat.cl

4. Calibrating the data

A. Construct the 42-inch catalog

B. Determining color-terms and zero-points

C. Applying the transformations

IV. Miscellaneous

A. Converting coordinates

B. taring onto tape

C. Recovering from "obj" stage.

D. Computer tricks and Timing

E. More than You Ever Wanted to Know about the WCS

F. How we're Releasing Our Data

G. Getting rid of spikes in the final catalog



sholmes@lowell.edu
massey@lowell.edu