At the recent Starscape Exhibitions a common question was “how far away are these deep-sky objects?”. I gave a rough answer in terms of Light Years, and the questioner would walk away satisfied, but it was clear that they really … Continue reading
In a few of my posts about imaging you will see me mention “narrowband data” and words like “OIII” and “H-alpha”. Well, this is to do with narrowband light filters and line emission sources of light [as opposed to broadband emitters]. For … Continue reading
We are incredibly proud that we have been given permission by Sir Arthur C Clarke to publish his tribute to both the BBC television programme The Sky at Night and to Sir Patrick Moore. If you do nothing else today – … Continue reading
According to the Guiness Book of Records this Quasar in the constellation Lynx is the brightest known object in our universe and who are we to argue with them [oops – see the Postscript below]!
