Ned Smith

That worked. Thanks

Is it possible to place a "mark" at specified coordinates on a solved FITS frame?

Good. That got the plate solve page back. Now the attached image won't slove. I submitted the image to Astrometry.net and got a solution. I used the data found to change ASTAP . Pressing Solve quickly gets "No Solution Found."

I use ASTAP mainly for plate solving. The other day I hit the Stack button. Now I don't see how to get back to Plate Solve setup.

Iwould like to know more about how this tool works. 1. I have downloaded the CometELS text file from MPCORB by opening it and copying the contects to a CometELS.txt file on my computer. It is not a deliniated file. How do you get data from it? 2. Does the app look for asteroids and comets in the image at the same time? Do I have to tell it what type Itolook for? 3. Have I downloaded the wrong file?

Looks like my initial conditions were wrong. Thanks for your explanation.

EST -5 Jan. 29 19:44:09 localtime Jan. 30 00:44:09 UT I thought this file was attached to my initial post.

The cimet C/2021 C6 (Lemmon) should be annotated in near the center of this frame. The latest cometELS.txt has been downloaded and the annotation app recognizes its presence. What might be the problem?