Quote:
Originally Posted by batema
Hi all and thank you for your responses.
I apologise for what is possibly the most ridiculous attempt at what I have been trying to do as it could be all wrong.
David: I did not have the Bhatimov mask on. This is the image of the guide stars that comes from the self guiding filter wheel. The stars come in initially as cigar shaped but this is the best I can get them as if I keep focussing they become cigar shaped in the opposite axis and they are not round unless I have the exposure (don't know how to set that as I just started using 4 seconds as seen in the image). The other thing is when I try to get the guiding going I don't know how to select a guide star. I thought the computer just did it automatically. Is there somewhere where I can pick a guide star and should I change the 4 to maybe 0.5?
Peter: I did set up last night and with the weather will probably have to pull down tonight but I use PHD2 to do my aligning and it uses graphs and a line of best fit as you drift in both axis. I went backwards and forwards maybe three or four times and the lines were more or less perfectly flat so I thought my alignment was OK. Sorry Peter but I don't quite understand the comment in your second post re camera 2 window.
I did just put the camera in like vertically but I do notice that I have to hold the hand paddle sideways to move the stars in the direction I want. Should I rotate the camera??? so up on the paddle causes the star to go up and etc.
Niharika: Thank you and I have looked quickly at the link so will go over that again. I just put the camera so that the camera's filter wheel has the longest side of the rectangular shape of the filter wheel pointing to the ground when the scope is in the park position. I made mention of this in response to Peter just above. I thought my alignment was OK as per comments above but I do not know how to get the dec drift to less that 1 pixel per 5 minutes. And as bad as it sounds I am not sure how you select a guide star in the guiding process.
Rick: Hi Rick. I will do this tonight.
Thank you all for your responses. I will look at the maxim tutorial today and if you could advise me on any of my responses that would be wonderful.
I remember when I first got my (sorry the schools) HEQ5 and ED 80 I thought I finally had things under control and when we would catch up with a good friend he would look in disbelief at what we were doing and tell us the correct way to do things. This occurred on a number of occasions. I suspect the same is going to occur here. I look forward to the journey.
Thanks
Mark
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If you look at the screen shot you posted, where you control both the camera and the guider the window on the left is the star profile, the second window along shows camera ones information, in this case "exposing light" "155 of 240" ect ect. The third window shows your guider and its errors. You will notice that contrary to what it is graphing, it is reporting the X errors to be low numbers and the Y errors to be offset by just over a pixel.
Oh and to select a guide star manually, in maxim you just click on one you like in the guider frame, you will know it has changed the star because the coordinates will change in the camera window. And at the bottom of the screen it will report ADU values so you know it isnt saturated