Something for nothing!
I don’t have their grating attachment, so I just used a DVD. I was able to more or less calibrate a spectrum of a compact fluorescent bulb and take some spectra. I took a spectrum of a candle previous dipped in salt water and a spectrum of a streetlight — the emission from sodium was very obvious in both. I was able to save and export the spectra. Too bad I can’t paste images in this review. Here’s the streetlight data (wavelength and intensity) 354.0 1.2 358.9 1.5 363.8 2.0 368.7 1.8 373.6 1.9 378.4 2.0 383.3 2.4 388.2 2.9 393.1 2.8 398.0 3.1 402.9 3.1 407.8 3.6 412.7 3.8 417.6 4.2 422.4 4.2 427.3 3.9 432.2 5.1 437.1 4.7 442.0 4.6 446.9 4.1 451.8 3.9 456.7 3.6 461.6 3.7 466.4 3.2 471.3 3.9 476.2 6.2 481.1 8.2 486.0 7.9 490.9 7.1 495.8 4.9 500.7 4.1 505.6 4.0 510.4 4.2 515.3 3.3 520.2 3.0 525.1 3.7 530.0 3.3 534.9 2.9 539.8 3.6 544.7 3.9 549.6 4.8 554.4 5.7 559.3 6.8 564.2 9.0 569.1 11.6 574.0 11.4 578.9 12.6 583.8 13.1 588.7 14.0 593.6 15.3 598.4 16.2 603.3 16.1 608.2 15.8 613.1 16.8 618.0 14.6 622.9 14.4 627.8 12.5 632.7 11.4 637.6 9.7 642.4 9.0 647.3 7.5 652.2 6.0 657.1 5.0 662.0 4.6 666.9 3.9 671.8 3.3 676.7 3.2 681.6 2.8 686.4 2.7 691.3 2.9 696.2 2.5 701.1 2.4 706.0 1.8 710.9 1.9 715.8 2.0 720.7 1.7 725.6 1.6 730.4 1.5 735.3 1.7 740.2 1.8 745.1 1.4 750.0 1.4 754.9 1.2 759.8 1.2 764.7 1.3 769.6 1.4 774.4 1.4 779.3 1.3 784.2 1.2 789.1 1.2 794.0 1.4 798.9 1.3 803.8 1.1 808.7 1.0 813.6 1.2 818.4 1.1 823.3 1.3 828.2 1.0 833.1 1.0 838.0 1.0
