My Astronomy


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My New Book May 2018My previous e-book



My Telescopes

My Main Telescope - C14 and Paramount ME

My new Paramount MyT and 8-inch Ritchey-Chretien Telescope

MyT Hand Controller

My Meade 12 inch SCT on a CGEM (Classic) Mount

My 4 inch Meade Refractor with Sky Watcher Guidescope and ZWO camera on a CGEM (Classic) Mount

Skywatcher Star Adventurer Mount with Canon 40D


My Solar setup using a DSLR and Mylar Filter on my ETX90

DSLR attached to ETX90. LiveView image of 2015 partial eclipse on Canon 40D

Astronomy Blog Index
About the Site

 I try to log my observing and related activities in a regular blog - sometimes there will be a delay but I usually catch up. An index of all my blogs is on the main menu at the top of the page with daily, weekly or monthly views. My Twitter feed is below. I am also interested in photograping wildlife when I can and there is a menu option above to look at some of my images. I try to keep the news feeds from relevant astronomical sources up to date and you will need to scroll down to find these.

The Celestron 14 is mounted on a Paramount ME that I have been using for about 10 years now - you can see that it is mounted on a tripod so is a portable set up. I still manage to transport it on my own and set it all up even though I have just turned 70! It will run for hours centering galaxies in the 12 minute field even when tripod mounted.


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Comet /2011 Panstarrs

Frustrated by the fact that Panstarrs is behind a 100ft Oak tree in my garden I spent some time checking my plantarium software for its position. I notice that there are a number of other comets close to C/2011 L4 (Panstarrs). In fact there are two other Pannstarrs - these are C/2012 S4 (Panstarrs) and C/2012 V1 (Panstarrs). However V1 is approx magnitude 15 and S4 is approx magnitude 19! Bearing in mind that L4 is about magnitude 6 there is a difference of 13 magnitudes between it and S4 and as a difference of 5 magnitudes is a brightness difference of 100 that makes S4 unbelievably fainter! (A difference of 10 mags is 10000 X fainter, a 15 mag difference is 1 million times fainter -I will leave you to do the exact Maths (see my article in the Journal recently and spreadsheet if you want to work out the exact value if you are new to this). There are also other comets in the vicinity. In the chart below I have marked magnitudes on some of these.