toggle quoted messageShow quoted text
I haven’t used Atrack, but have been reviewing the manual and I believe the program continuously adjusts the drift rate as you capture images. They are saved in a file that is watched by the program and plate solved through Pinpoint. I believe there is also a modeling routine that I assume can be saved as long as the setup remains the same. As I say, I’m not 100% sure of this, but it looks like it’s worth taking a look at.
One question I have on the AP keypad system is accuracy. How accurate is centering a star by eye. I would think that a longer time between inputs would be necessary to improve accuracy. If I have a fairly decent PA, I would think I might need a 10-15 minute drift measurement. A longer focal length would also help.
On May 29, 2020, at 6:15 PM, uncarollo2 <chris1011@...> via groups.io <chris1011@...> wrote:
Basically you get one data point in about 200 seconds (3 - 4 minutes) which sets the drift rate at that point int he sky. So that will work for a while, maybe 1/2 hour to an hour, after which the drift will have changed. So then you take another 3-4 minute run to establish a new drift rate. You do that every hour or so along the path that the object takes.
That's exactly what I'm doing also. 3 - 5 minute drift measurement which is good for an hour. However, if I take just 3 drift measurements along the path, spread out over a 5 - 6 hour period, the CP5 will then compute a continuously variable tracking rate for all points in between for the entire 6 hour period. I can do this measurement all at once before the sun goes down using 3 widely spaced stars of Mag4 or brighter and an H-a filter. Takes about 15 minutes total. This path is then computed and ready to go when twilight ends. I can even do another object path at a different Dec, download it and be ready to image two objects. In fact, if the two Dec lines are widely spaced, I can image all objects in between also unguided because the model computes the variable tracking rates for the entire sky area as well as +- 10 degrees outside those two Dec lines.
Below see the tracking graphs for the imaging that I am doing tonight. They show how the tracking rates vary over approx 45 minutes.
From: Steven Steven <steven447@...>
To: email@example.com <firstname.lastname@example.org>
Sent: Fri, May 29, 2020 9:52 pm
Subject: Re: [ap-gto] Mach2 Unguided testing continues
That comment has to do with a long-time on-line chess game, not for you/forum. Sorry, it's wrong context, I've a busy day on email today.
In reply to your own query, you set up each object separately. I use the Autosave feature on Maxim and when finished with one object, move to it, train ATrack, an make the second one. It's that simple. The User Guide is a good start and will answer your queries
without reference to chess moves. 😉