Conclusion
Using data I pulled from the SDSS database, I successfully made an h-r diagram for the M35 cluster. I made several mistakes along the way, including pulling data for the wrong stars because the coordinates had shifted in the decade since the data had been collected, using equations that didn't get me the correct or expected values of temperature, and attempting to calculate main sequence lifespan using equations that only work for stars less luminous than the sun. However, despite these missteps, I eventually constructed an accurate h-r diagram and used it to estimate the age of the M35 cluster. The accepted age for the cluster is about 100 million years old, give or take 10 million. I found a range of possible ages, everywhere between 200 million and 500 million years, with the most common measurement being about 300 million years. Although this is significantly different from the accepted age, given the imprecision of the technique I used, I think it's reasonable. In addition, although I looked at data for 500 stars, that's still relatively few compared to the total number of stars in the cluster. Also, it's possible that some stars on the fringes of the cluster, but not actually in the cluster, were also included in my data and threw off my measurements. All in all, since I did build an h-r diagram and approximately find the age of M35, I think the experiment was a success.