What is Astrophotography?

I think that, quite literally, the simplest definition is "the photography of objects residing beyond Earth's atmosphere", a wide enough definition that includes artificial satellites like the ISS. Hence, if we ask what Deep Space Objects (DSO) astrophotography is, the simplest and most comprehensive answer is "the photography of objects in space placed outside of … Continue reading What is Astrophotography?

Tracking times

One of the most critical factors in astrophotography is how long your mount can track a target without manifest elongation of the stars (of course, how much elongation is too much is often a bit subjective). With unguided tracking exposure times are bound to be shorter than if you autoguide and with an altazimuth mount … Continue reading Tracking times

Field Rotation … aka The Bogeyman

Field rotation can really be considered the bogeyman of DSO astrophotography with altazimuth mounts, indeed all those who object to the possibility of doing any serious AP with AltAz mounts invariably quote it as THE main obstacle. So, what is it and why is it so bad for altazimuth astrophotography? It has been explained a … Continue reading Field Rotation … aka The Bogeyman

Pictures: Lunar and Planetary

Teophilus, Cyrillus and Catharina, with Meade ETX-80 and LPI, April 2007. Ptolemaus, Alphonsus and Arzachel with Meade ETX-80 and LPI, January 2007. Jupiter with Meade 2045 D at 2000 mm FL and Meade LPI, June 2006. Saturn with Meade ETX-80 and Meade LPI, March 2007. Teophilus, Cyrillus and Katharina with MAK-90 and LPI, April 2017. … Continue reading Pictures: Lunar and Planetary