Some context: Circa Survive is an American rock band from the Philadelphia suburb of Doylestown, formed in 2004. The band, led by Anthony Green, consists of former members from Saosin, This Day Forward, and Taken. Circa Survive quickly made a name for themselves in the indie music scene in little over two years with their 2005 debut album, Juturna, and second album, On Letting Go, released in 2007. Both albums were released on Equal Vision Records.
In mid April 2014, Circa Survive once again entered Studio 4 in Conshohocken, PA to record their fifth album with producer/engineer Will Yip. They recorded 11 songs during the sessions and concluded recording by the end of May. On May 19, 2014 during a Saosin interview at Skate and Surf, Anthony Green stated that Circa Survive "have a new record coming out, hopefully in the fall, I mean I fucking shouldn't even say that, probably". On April 19, 2014, the band released a split EP release with Sunny Day Real Estate titled Sunny Day Real Estate / Circa Survive Split 7".  On August 15, 2014, the band announced their signing to Sumerian Records for the release of the fifth album and also a reissue of their fourth album Violent Waves. In an Alternative Press interview published in August 2014, Green said, "Well, the next Circa record is done. We're in the final process of getting the final mixes right now." "It's definitely the most aggressive Circa record we've ever made. It's the first record of ours I've been able to listen to front to back without having that song that I'm like, 'Yeah, I could've done better here.' Every song has this moment in it that makes me feel ridiculous. I feel like I just outdid myself. I feel like we did better than we did before."  The album, entitled Descensus was released on November 24, 2014. The album art was once again made by Esao Andrews. On October 27, 2014, the band released the first single and music video from Descensus titled "Schema". The second single "Only the Sun" was shown on November 5, 2014. Its video features visuals used in the tour for the album with Title Fight, Tera Melos and Pianos Become the Teeth.  In January 2017 the band began a tour to celebrate ten years of 'On Letting Go' with support from MewithoutYou and Turnover.
Who was in the band during this period?
A: Anthony Green
Some context: Claudius Ptolemy (; Greek: Klaudios Ptolemaios, Klaudios Ptolemaios [klawdios ptoleme:os]; Latin: Claudius Ptolemaeus; c. AD 100 - c. 170) was a Greco-Roman mathematician, astronomer, geographer, astrologer, and poet of a single epigram in the Greek Anthology. He lived in the city of Alexandria in the Roman province of Egypt, wrote in Koine Greek, and held Roman citizenship. The 14th-century astronomer Theodore Meliteniotes gave his birthplace as the prominent Greek city Ptolemais Hermiou
Ptolemy's Almagest is the only surviving comprehensive ancient treatise on astronomy. Babylonian astronomers had developed arithmetical techniques for calculating astronomical phenomena; Greek astronomers such as Hipparchus had produced geometric models for calculating celestial motions. Ptolemy, however, claimed to have derived his geometrical models from selected astronomical observations by his predecessors spanning more than 800 years, though astronomers have for centuries suspected that his models' parameters were adopted independently of observations. Ptolemy presented his astronomical models in convenient tables, which could be used to compute the future or past position of the planets. The Almagest also contains a star catalogue, which is a version of a catalogue created by Hipparchus. Its list of forty-eight constellations is ancestral to the modern system of constellations, but unlike the modern system they did not cover the whole sky (only the sky Hipparchus could see). Across Europe, the Middle East and North Africa in the Medieval period, it was the authoritative text on astronomy, with its author becoming an almost mythical figure, called Ptolemy, King of Alexandria. The Almagest was preserved, like most of extant Classical Greek science, in Arabic manuscripts (hence its familiar name). Because of its reputation, it was widely sought and was translated twice into Latin in the 12th century, once in Sicily and again in Spain. Ptolemy's model, like those of his predecessors, was geocentric and was almost universally accepted until the appearance of simpler heliocentric models during the scientific revolution.  His Planetary Hypotheses went beyond the mathematical model of the Almagest to present a physical realization of the universe as a set of nested spheres, in which he used the epicycles of his planetary model to compute the dimensions of the universe. He estimated the Sun was at an average distance of 1,210 Earth radii, while the radius of the sphere of the fixed stars was 20,000 times the radius of the Earth.  Ptolemy presented a useful tool for astronomical calculations in his Handy Tables, which tabulated all the data needed to compute the positions of the Sun, Moon and planets, the rising and setting of the stars, and eclipses of the Sun and Moon. Ptolemy's Handy Tables provided the model for later astronomical tables or zijes. In the Phaseis (Risings of the Fixed Stars), Ptolemy gave a parapegma, a star calendar or almanac, based on the hands and disappearances of stars over the course of the solar year.
What else did he know about the skies
A:
He estimated the Sun was at an average distance of 1,210 Earth radii,