Monday, 5 August 2013

Allegorical nebulae

Havent posted for a while. I have been moving. Closer to the observatory. Yes! But I'm all back and doing proper astronomy again. I tried aiming overhead in what seemed like quite a light sky, in order to minimise the sky glow, but I encountered the damn problem of Alt-Az telescope rotation. Even on short (30 second) sub-exposures. I pointed at a particular detail of a nebula in Cepheus (see post below - mu Cephei) that resembles an elephant's trunk. Or at least is said to. Well here are 12 rather rotated exposures of it, combined to show the feature up quite well. I tracked on a star near the centre, but I think I'll not go over 75º altitude again (this was at 82º+).