Hi Alex
Thanks! For these objects, I go to
SpaceWeather where they have a monthly list of Near Earth Asteroids. I then note which are in my magnitude range and make a note of their name.
Next, I fire off The Sky 6 Pro Edition and use it to download the object via the internet as follows:
From the Menu, select “Data”
Then “Comets and Minor Planets”
Click the “Minor Planets Tab”
Select “By Name” in the “From the web” dialogue
Type in the name(s)
Press “Ok”
and then the Sky downloads the data and orbital elements so you can
Find the NEA and see if it is visible from the Southern Hemisphere and at a suitable altitude. Some are only visible in the NH and others transit in the daytime, so not all the NEA’s listed on SpaceWeather can be imaged from Brisbane.
Those that are greater than say, 20 LD are usually “easy” to image as they move relatively slowly against the background of fixed stars, so you have plenty of time to GoTo the object, take a few 60-300 sec test images to identify the field and the target and then nudge the ‘scope so that the NEA is positioned where you want it to be. Then, it’s a matter of sitting back and hoping that the clouds don’t roll in!
Those that are less than 10LD usually traverse the field of my ST7 in a few short minutes and I have to jump ahead of their path to make sure I record the trail.
My hairiest capture was XP14 which shot across the field in approx 60 seconds, just at the crack of dawn and I was lucky to capture 2 faint streaks of 30 secs each!
Cheers
Dennis