Mars imaging notes
Some notes on how I’ve been processing recent mars images.
Z72
Astronomy
C9.25 tube wobbling
I’ve been having a problem over the past few months of the focus in my scope drifting unacceptably out of focus when imaging targets around the sky. Even when staying on same target for extended periods of time there was a noticeable shift. In some extreme cases the collimation also appears to be way off.
Astronomy
Imaging geostationary satellites
One of the people at our table at the COSMOS star party this brought up the topic of long distance radio communications and the use of geostationary satellites to facilitate such communication. The idea of trying to image some of these satellites then came up and we discussed the possibility. So last night I decided
Astronomy
Analysing CCD characteristics and Determining minimum optimal exposure time.
Motivation My main interest st the moment is in minor planet astrometry, particularly of brighter Near Earth Asteroids. In order to get precise astrometry of these objects it helps if they are not moving in a single frame. Slow NEO’s can have rates of several arcseconds per minute so being able to take short exposures