[multiweb (Marc)]

Originally Posted by Tandum

Just click on the star you want it to use and click start.

I click the locate radio button in the AO setup window. MAXIM selects a star. I then click another one. Press start in the same window and MAXIM selects his own again.

Originally Posted by avandonk

You can select the calibrate star by left clicking when the calibrate thingy is ticked. Press start to calibrate. Then left click on your star of choice while the track thingy is ticked and then hit start!

Bert

You've confused the hell out of me there Bert. Calibrate thingy beign the radio button? Yeah I did that. Clicking start always defaults the star back to Maxim's choice.

Originally Posted by gregbradley

In CCDsoft that would still fail as the software will automatically chose the brightest pixel in the image thinking it is the guide star. I have seen my autoguider go along nicely and then all of sudden hit 8 to 14 pixel guide errors due to selecting a hot pixel or camera artifact (Lodestar).

The best solution is a dark subtract. With an STi that is done simply by selecting autodark in the imaging menu and it takes a dark at the start and then reuses it continually through the session (it has shutter to be able to do this). It will not use a library dark though so you would have to be using Maxim that allows library darks for autoguiders.

So unless your guide camera is pretty clean and free of artifacts you need an STi or ST402ME or use Maxim.

Greg.

Thanks Greg. I do darks and apply them to the lodestar. Then use full calibration in the camera setup windows.

Originally Posted by RickS

Or use ACP which picks the guide star for Maxim

Thanks Rick I read a little about ACP. I see that it has a line that disables MAXIM star selection: Camera.GuiderAutoSelectStar = False. Can you tell me the link to the latest version of this script. I'll check it out.

Originally Posted by troypiggo

Yes, just click in on when you do the "expose". You should see the x and y coords change to the star you picked.

I also do as Greg suggested and do a full dark calibration of guide cam even for guiding.

Originally Posted by marki

Just make sure it is a single click only, not double. Maxim will then use the star you have chosen to guide.

Mark

Thanks guys. Did that. The star selection in the AO defaults back to MAXIM selection as soon as any start button is clicked.