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Carnegie IR Survey Pipeline

Carnegie IR Survey Pipeline. Loop combine Reject CRs. Flat field corrections. Find associations. IRX Frames. ICX Frames. IDF Frames. Append BP Mask, update headers. Median sky for Each pointing. Tweak Dither offsets. Detect objects. Make total Mask for each frame. Object

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Carnegie IR Survey Pipeline

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  1. Carnegie IR Survey Pipeline Loop combine Reject CRs Flat field corrections Find associations IRX Frames ICX Frames IDF Frames Append BP Mask, update headers Median sky for Each pointing Tweak Dither offsets Detect objects Make total Mask for each frame Object Masks AVE Frames ISX Frames First pass Sky subtraction Make first stacks Un-dither object list IS2 Frames Sort for Tile Assembly Second pass Sky subtraction IDF Frames

  2. Carnegie IR Survey Pipeline Sigma image Sort by tile Combine all frames Stacks By chip IDF & IS2 Stacks By chip Find astrometric Reference objects Block replicate Pixels 2 x 2 Update offsets Compute sigma images CR reject Sigma image FP geometry Assemble tile Combine rasters Tile Tile Solve for WCS Combine sigma images Un-dither object list Tile WCS Tile WCS Rebin to original scale Make Catalog

  3. CIRSI + LCO Wide Field IR Camera du Pont 2.5m telescope 4 1024 x 1024 arrays cryogenic Offner relay 16 channel electronics Eric Persson & Co.

  4. RAW Flattened 1st Sky sub Object + BP mask Flattened 2nd Sky sub First Stage of Pipeline

  5. 4 1024x1024 detectors – 90% gaps

  6. 4 pointings – 16 1024 x 1024 images

  7. 4 pointings – 16 1024 x 1024 images

  8. 4 pointings – 16 1024 x 1024 images

  9. 100,000 1024 x 1024 Frames - 30 seconds each 13’ x 13’ mosaic – 3 hour exposure

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