LC is a great program – it works on windows and linux, and because it uses all internal codecs, its behaviour doesn’t depend on lots of other stuff being in the OS first. It also means it can work more or less exactly the same on both OS types provided […]
Daily archives: 2019-05-30
18 posts
Email Email ought to be simple. But it isn’t. Overview Email has the following key components – A way of creating a message and addressing it to its intended recipients – A way of taking a message and transferring it ultimately to a recipient – A way of retrieving delivered […]
Introduction This paper explains how my desire for a Windows friendly tool to do something I thought was so easy there’d be lots of solutions out there led me to writing my own solution. I consider two common functional requirements: You have several machines and want to synchronize key data […]
Dates It’s quite extraordinary how difficult it can be to get things right when writing a computer program which cares about dates and or times, even if you’re just talking about the Gregorian calendar ( the one most people use, certainly in a business context ). The purpose of this […]
Most people will be nice to others unless it’s in their interest not to be, but if it is, there are no limits to how nasty they can get. Remember that psychos are often charming, and good company. You can only get away with being totally amoral if people tend […]
The measurement of time is a fascinating subject, Superficially simple and commonplace, it develops more and more complexity the more you look into it. In learning what I needed to know to design a sundial, I found myself delving into the subject and often frustrated that the information I needed […]
LX 90 weight The telescope assembly weighs approx 14.5 kg with no eyepieces etc. The tripod is approx 8kg. Wedge 4.5kg. The exact weight you have to lug around depends of course on what is attached…. LX 90 focussing The LX90 focusser works by moving the mirror. Turning the focusser […]
The focuser on the ETX70 works by moving the objective along the barrel. Turning the focuser clockwise shortens the barrel and moves the objective closer to the eyepieces. So if you move the focuser clockwise, and then pull an eyepiece out of the holder, you will regain focus. Because closer […]
The camera adapter has a t2 male thread at the top (wide end) which screws into the adapter for the camera. It has a t2 female thread at the bottom which screws into a t2 mount. An eyepiece goes into the barrel at the bottom ( from the inside ) […]