Open Cluster: NGC 3114

This observation of the Open Cluster NGC 3114 was taken with a Prompt 5 telescope in La Serena Chile. We used filters B, V, R, and I. The exposure for B was set to 30.0s, V was 20.0s, R was 10.0s, and I was 15.0s. The total observing time per filter was 75 seconds.  We utilized “batch” photometry to measure the brightness of each star in our cluster. The zero-point calibration would not cooperate so the “grey image” was the best for observations. After getting the picture to look as clear as possible we uploaded the photometry data to astromancer. Astromancer very conveniently portrayed beautiful graphs and gave us useful information after playing around with it. We found an age of 6.85log(yrs), a metallicity of -0.15 (solar), and an E(B-V) reddening value of 0.08.

Globular Cluster: NGC 1851 

These observations were taken with B,V,R, & I filters. Half of these observations were taken with the Prompt-MO-1 telescope in Australia, and the other half of the observations were taken with the Prompt 5 telescope in La Serena, Chile. The observations from Prompt 5 were much more clear and detailed. This is due to a combination of weather conditions and the higher altitude of the telescope. The exposure of these observations ranged from 7-18 seconds. The use of batched photometry allowed an algorithim to measure the brightness of light sources in arbitrary units, and with this information we’re able to filter out many of the field stars by magnitude, distance, and luminocity.

With this information we’re able to find data and our sources were within 10-20% of the stated one: