This Astrometric Telescope Control System (ATCS) upgrade comprises the upgrade of ATCS controller (e.g. PrimeTCS or SkyWalker/S-Box) firmware. No upgrade of Maestro user interface software is needed (latest version is 3.00.111). Maestro is the default ATCS client/user-interface software for Microsoft Windows based PCs.

Important notes

1. Upgrading Maestro software will lead to ATCS controller firmware upgrade. When the new/upgraded Maestro is connected to the controller for the first time it will detect any older firmware version and ask if you wish to upgrade. Select yes. All controller firmware upgrade files are included in the latest Maestro release so there is no need to download them separately.

2. To install Maestro (if not already at version 3.00.111) download and run the MaestroSetup3_00_111.exe file which can be found via our support page.

3. Maestro does not work with SkyWalkers unless that SkyWalker has been upgraded to a "smart" SkyWalker with the S-Box accessory.

======================== This file best viewed with fixed-font at this screen width or greater ==========================

Software Licensing

A software activation license is necessary for major new upgrades starting with Maestro and ATCS firmware version
3.00.000.  There is a substantial amount of work that goes into each major upgrade and this effort needs to be
supported through nominal license fees.  This will assure that further future upgrades and continued support are
available for ATCS.

When Maestro first connects to ATCS it will prompt for the Software License Code.  This license code is 8 characters
long (not case sensitive) and is provided via written copy when the system is shipped or via email if a Maestro and
ATCS firmware upgrade is purchased on-line.  To purchase a license contact Astrometric support or
visit our on-line store.  Be sure to have your ATCS device serial number.  This is provided when Maestro first
connects to ATCS and is displayed as a message in the Message Area on the bottom of Maestro's window.

Maestro3: New features this release

None

Maestro3: Bug fixes this release

None

ATCS: New features this release

Alt/Az field derotation
-----------------------
PrimeTCS calculates Parallactic Angle and sends it to RotatorPro (over the TCS bus) with an update every 75ms if PrimeTCS is in an
AlignmentMode of AltAz, Track Rate is not Drift, Move Mode is Track and PrimeTCS is presently aligned.  The purpose of this feature is
to allow RotatorPro to derotate the field of view in Alt/Az telescopes.

Parallactic Angle is (PA) defined as the angle ZFP where:
	- F is the center of the field of view
	- Z is the zenith
	- P is the North celestial pole
PA is positive CCW.  An example:
	- Telescope pointing into the Eastern sky
	- The vector FZ points up from the center of the FOV to the zenith
	- The vector FP points to the left from the center of the FOV to the pole
	- The angle between the FZ and FP vectors is the PA and in this orientation it is positive.

Note: Above an altitude of 88deg the PA calculation uses an altitude of 88deg in the calculations to avoid too fast a derotation
speed in RotatorPro.

ATCS: Bug fixes this release

None