starmapper With the current version of the software that may no longer be the case. I just downloaded the latest version (2.0) and will experiment.
One way to test if Daylight Saving Time is a problem is this (even in the daytime, and indoors):
Check what the current Local Sidereal Time (LST) is.
Unfortunately, ASIAIR does not display LST anywhere, but you can get it from something like SkySafari, and there are even free apps at the Apple App Store that can display LST -- just search for the keyword "Local Sidereal." Apps like Polar Scope Align will also display LST. So does the SynScan app, if you already have that. Practically any astronomy or celestial navigation app, but ASIAIR.
Once you have the LST, run ASIAIR and set the GOTO target with an RA that has the value of the LST plus 2 hours. The declination can be anything above the horizon. You can for example, set declination to a value that is approximately your Latitude -- that should clear of the horizon.
GOTO this target. Your mount can be indoors, in broad daylight, no need to polar align; it does not matter (as long as it does not smash into anything).
Notice that the mount should point your OTA to a point that is about 30 degrees east of the mount's Meridian.
Now go to Autorun and create a sequence (say, set exposure to 300 seconds, and ask for a sequence of 100 images; something that is not complete nonsensical).
Start autorun.
At the bottom of the AutoRun window, you should see a line that says "Meridian flip in x minutes." This is the only place Local Sidereal Time crops up in ASIAIR, and indirectly.
Is the value of x about 120 minutes (2 hours)? If there is a discrepancy of one hour, you have a DST problem.
Chen
