Simulators

One of the problems with learning to use an astrolabe is that in order to work through the class notes the student needs to first print out and assemble their own astrolabe from the provided materials. This takes time and materials that may not be ready to hand. What I’ve wanted to do for a […]

Introducing the Advanced Astrolabe

For quite some time now I have been basing my class, and my discussions here, on an astrolabe with fairly basic options. Linked to the right you will find a zip file containing the components for this basic astrolabe, along with the handout for my class. But there is more to the astrolabe than just […]

Advanced Astrolabe Functions: Estimating the direction to Mecca.

Given that the math and sciences of the Middle East were a major driving force in the development of the astrolabe[1], it is reasonable that some of the advanced functions are related to the dominant religion of the area, Islam. Today we will discuss using two of the astrolabe’s advanced features to estimate the direction […]

Another astrolabe in work

This one is a metal astrolabe. A work in progress that uses some of the output of the Astrolabe Generator. Images used with permission.

An Astrolabe in Work

I got this last night via Twitter: https://twitter.com/cforchino/status/434176137216794626 Nice work, he has a steadier hand than I do. Please do email or tweet me your astrolabes, I’ll be glad to post them. Addresses are on the right.  

Pennsic War 42 Followup

(Ok, so I’m a bit late with my essay “What I did on My Summer Vacation”, sue me.) I committed to three activities related to this project this past Pennsic: Firstly, I taught a pair of two-hour sessions of my class “The Astrolabe in Theory and Practice” at Pennsic University. In addition I displayed my […]

What I’ve been up to

Wow, how time flies. It is almost a year since I last posted here.  New Years Resolution: Post at least once a week. Yeah, let’s see how long That One lasts… Not that I’ve been idle. In the intervening months I have gotten quite a bit done, I just haven’t been sharing. Since my last […]

Current Progress

Even though I haven’t been posting, I have been busy. In addition to the changes to the Astrolabe Generator mentioned in the previous post, I was asked to teach a class at a small gathering of medieval reenactors last month, and so had to to get my class handout updated ahead of schedule, and a […]

Adding a Hemisphere

I’ve been lax on updating the blog lately. Not because I’ve not been interested, but because I’ve been busy. First off: I have received two requests to modify the Astrolabe Generator to support the southern hemisphere. This took a bit of recoding and rearranging some of the functions, but the result is now up and […]

Drafting the Astrolabe 12: The climates part 1

The first step in drafting the astrolabe climate plate is to lay out the Tropics and the Equator, along with the meridian. As these markings will be the same for all the plates, it makes sense to draw each line on all the plates before moving on to the next line. This way, I can […]