Quote:
Originally Posted by Pazuzu
(Post 11740792)
That being said, since Eric mentioned set and forget scopes,
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Well, not really set and forget. I do have to polar align it. Then do a plate solve to let it know where it's pointing. It is pretty straight forward process though compared to the older times, pre digital this and that.
My process:
Place telescope roughly pointing towards the north polar axis. Level the mount.
Connect the ZWO ASIAIR computer via wi-fi to my tablet.
Fire up the ASIAIR app and get the camera cooling.
Place the filter I am going to use it the filter holder.
Go to the focus portion of the app and run the auto focus procedure. Usually takes about 3-4 minutes. Auto focus is amazing. You can set this to run at anytime during the night, when the temp drops by x amount or every half hour or so.
Go to the polar alignment process in the app.
Take a photo with the main camera and scope. The mount then rotates 60 degrees around the polar axis and takes another picture.
It compares the two photos and shows the alignment.
Adjust Alt and AZ until you are satisfied with the proximity of polar alignment. The ASIAIR continuously takes photos during this process to help solve polar alignment.
I usually get to within 2 arc seconds of PA. in less than 3-4 minutes. Best to take as much time as needed during this process to get the best PA.
Turn on tracking.
Sit my butt in a chair and fire up a cigar.
Once that is done you can slew to any part of the sky, take a photo and run a plate solve. This will let the system know where it is pointed.
Then I pick a target for the night. I can pick the target in the app and it will slew to target and take a quick pick to make sure it is centered. It does a plate solve and re centers if necessary. I usually take a test pic of 30 seconds on BIN 4 to verify placement of object...sometime I don't want it centered.
I rerun the auto focus at this time.
Then I set up the capture procedure based on the night. How many light frames and duration. If I had more tech on the system I could capture darks, flats and bias file automatically but I do not have automated flippy do dads for the objective so I simply do those in the morning when the light frame captures are done or I wake up.
Next, go to the guiding portion of the app and fire up the guide camera. The first time this happens it needs to run a calibration. The apps version of guiding is just a slightly stripped down version of PHD guiding. It works great.
Once the guiding settles I start the capture process and can relax while it does its thing.
I'm really amazed and thrilled with the technology that allows this. Capturing these shots back in the day with a film camera and your eye on crosshair eyepiece and your hands on manual controls really is crazy hard.