Over a week ago now I had an intense astronomy evening with my tame scientist. There weren’t many hours between sunset and moonrise so we worked fast to try and prove that we had a reliable autoguiding setup, having been plagued by various failures and obstacles the last few times we’d tried (see below) We […]Read more "Deep space"
If you’ve been following my geeky astronomical posts lately, you’ll see that my new telescope suffers from triangular stars, caused by pinched optics. I’ve also been posting about the problem on Astronomy Forum. Just to recap, the telescope currently produces pictures like this. The effect is subtle, but if you click on the picture to […]Read more "Pinched optics – the cure"
I’ve been having an ongoing problem since buying my telescope a couple of months ago. Stars appear triangular, as you can see in this picture of Pleiades. I’ve done some research and it seems the most common cause of triangular stars is a defect called “pinched optics”. The primary mirror in is held in place […]Read more "Pinched optics"
This morning I published a picture of the Andromeda galaxy, with some notes about my method a vow to improve my technique. I pondered the image processing and decided to have another go this afternoon. This is the same dataset, but different processing. It’s a colour image and unfortunately shows some light pollution, although I […]Read more "First light part 2"
Hot on the heels of my recent post about telescopes for imaging, in this post I’d like to share with you the very first image taken with my new GSO 6″ f/5 imaging Newtonian – which was funded by selling my two previous telescopes and a couple of camera lenses. Tonight was the first clear […]Read more "First light: GSO imaging Newtonian telescope"
Well, “perfect” is a strong word. No matter what you’ve got, there’s always something better. This article is about my hunt for some suitable equipment for deep-space astro-imaging, inspired by the recent purchase of a new telescope for imaging. Ideally I’d be out using it right now, but it’s forecast to be cloudy until further […]Read more "Finding the perfect astro imaging setup"
Some time ago I got a new telescope – a Celestron 130EQ-MD Newtonian rather than a Celestron NexStar 127 SLT Cassegrain-Maksutov formula. In short, it is more sensitive to light but sacrifices magnification. It’s perfect for deep-space observation like nebulae and galaxies, while the Maksutov is better for observing planets which are much brighter and […]Read more "Andromeda Galaxy"