### Introduction

Mana is a basic image and data analysis program based on the Opihi shell. See the Opihi documentation for further descriptions of the tools provided by the Opihi shell. In addition to these functions, Mana provides a collection of astronomical functions.

### Mana astronomy functions

      findpeaks              -- find image peaks
      fitcontour             -- fit ellipse contour
      starcontour            -- object contour
      rawstars               -- find raw star stats
      biassub                -- subtract medianed overscan row or column
      cgrid                  -- plot sky coordinate grid
      coords                 -- load coordinates for buffer from file
      cplot                  -- plot vectors in sky coordinates
      csystem                -- convert between coordinate systems
      ctimes                 -- convert between time formats
      cval                   -- cosmic ray flux?
      czplot                 -- plot scaled vectors in sky coordinates
      drizzle                -- transform image to image
      flux                   -- flux in a convex contour
      gauss                  -- get statistics on a star, assuming gaussian profile
      getvel                 -- rotcurve to velocities
      imfit                  -- fit function
      imsub                  -- subtract function
      medianmap              -- small median image
      mkgauss                -- generate a 2-D gaussian centered in image
      multifit               -- fit multi-order spectrum
      objload                -- plot obj data on Ximage
      outline                -- fit outline region
      polar                  -- convert polar image to cartesian
      precess                -- precess coordinates
      profile                -- radial profile at X, Y
      region                 -- define sky region for plot
      rotcurve               -- convert CO images to polar coords
      scale                  -- get / set real bzero / bscale values
      sexigesimal            -- convert to/from sexigesimal/decimal
      spec                   -- extract a spectrum
      star                   -- star stats at rough coords
      transform              -- geometric transformation of image