### Challenge 2

 Measured Data 18000467 49319591 85727464 89453452 74324712 74324712b

18000467: Sparse Modeling (L1+TV regularization) - The raw reconstructed image from uvfits files solved with L1+TV regularization and L-BFGS-B algorithm from the bi-spectrum. (BSSpM)
49319591: Closure Only Imaging
85727464: Amplitude + Closure Phase Imaging
89453452: Bispectrum Imaging
74324712: CHIRP Imaging - In challenge 2 there is a distinct hole at earlier iterations of the optimization, but it blurs out as it reaches the end. I have also attatched an image I get when I restrict the FOV to be 100 micro arcseconds (74324712b).