Ascom Driver Download For Windows

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• Version 1.4.129.0
• Download 817
• File Size 1.85
• Create Date September 16, 2020

Download the latest Altair Astro Camera ASCOM Driver here.

Ascom Driver Download For Windows 8.1

NOTE: New version 1.4.129.0 with 'Ultra Low Noise Mode' for Altair cameras which support it, such as AA26CTEC and AA26MTEC. This driver will automatically switch on 'Ultra Low Noise Mode' if the camera supports it, and is in it's highest bit depth mode (E.g. 12/14/16 bit RAW). Using Ultra Low Noise Mode can slow down USB transfer rates, therefore we recommend using the USB Speed slider shown in the image below.

These drivers require Windows 8 or higher, and are contained in a .ZIP file.

New version 1.4.129.0

• Known minor bug with 26C camera: Cannot take 60sec exposures. 59secs and 61 secs are OK. Will be fixed in next release.
• Automatically switches on ULTRA Low Noise mode if camera supports this feature and is in high bit depth (12/14/16 bit) mode.
• With USB Speed / Frame Rate slider control.

This web page describes the ASCOM driver for Astro-Physics telescope mounts.

Quick Start - For Experienced ASCOM Users::

Follow these steps to Install the Astro-Physics ASCOM V2 Driver

1. Go to the ASCOM website and determine the required updates to Windows and DotNet for the latest ASCOM Platform Updates.
2. Update your Windows OS and DotNet as recommended on the ASCOM site.
3. Return to the ASCOM site and update your platform to the latest version including all platform updates.
4. Once the ASCOM Platform is fully updated, review and possibly download the documentation and instructional videos if needed using the Quick Links section below.
5. Install the latest ASCOM V2 Driver in the Quick Links table.
6. Run the setup screen either directly through the installer or through Start => Programs => Astro-Physics => ASCOM Driver
7. In the ASCOM Telescope Chooser of your ASCOM client program, select 'Astro-Physics GTO V2 Mount'

The ASCOM Platform and the Astro-Physics ASCOM V2 Driver will provide you with more comprehensive and fail safe control of your Astro-Physics GTO mount. We encourage you to use this interface for PC-based control of your mount!

Quick Links:

Park 4 and Park 5

Park 4 and Park 5 have been added to APCC and the latest version of the driver. Park 4 parks the scope on the opposite side of the pier facing south to the horizon. Park 5 parks the scope on the opposite side of the pier facing north to the horizon.

This was done to overcome a potential Park 1 issue. The issue would occur if the mount is allowed to track into a counterweight up position (i.e., telescope lower than counterweights) before initializing from the Park 1 position. Because the mount tracks west when powered there is only a minute or two before it will move into that counterweight up position, so it is critical to promptly initialize the mount.

The need to promptly initialize is because a 'Sync' command is sent which always assumes the mount is in a counterweight-down position. If the mount has tracked into the counterweight-up position when the Sync occurs the mount controller will think the RA Axis is 180 degrees off from the current position so the mount will appear to be lost and dive under the mount when commanded to go to any sky target. It is not actually lost, it was just incorrectly initialized.
Note that while you can still use Park 1, do so at your own risk. We think that Park 4/5 instead of Park 1 is a superior solution. Park 4 and Park 5 have the advantages of Park 1 (e.g. scope is level) but none of the disadvantages.

Here is a comparison of Park 1 to Park 4 for the Northern hemisphere:

For Those Requiring (or wanting) a Bit More Information about ASCOM:

NOTE: Links to third party sites were current at the time of webpage publication, but are not under the control of Astro-Physics.

ASCOM Standards for Astronomy - The ASCOM Initiative

What is ASCOM?

ASCOM (AStronomy Common Object Model) is a go-between to allow different software packages to talk to different pieces of astronomical equipment. The ASCOM platform provides a common language for all the software, and then each individual driver translates that common language into the specific command laguage needed to make the equipment do what we want it to do.

The ASCOM initiative began in 1999 as new mounts and CCD cameras, each with their own unique control systems came on the market. Bob Denny of DC3-Dreams and others realized the complexity of developing mount and camera control software that could be used with a wide variety of instruments. The task of software developers to keep up with new mounts, cameras, focusers, etc. as they came on the market, or to stay abreast of revisions to the code of existing equipment was an enormous (or more correctly: insurmountable) task. So, the ASCOM Initiative was born to establish, develop and promote a driver-client architecture just as the computer industry had done earlier with printers, cameras and other peripherals. For even more information, check the following link: About ASCOM.

Why should I use ASCOM and the Astro-Physics ASCOM V2 Driver?
The ASCOM platform and the ASCOM V2 AP driver are not required to run PulseGuide, and they are certainly not required for control of the mount with the Astro-Physics GTO Keypad. However, the platform and driver are required for PEMPro, ACP (by DC3 Dreams), and other programs, and are extremely useful for anyone wishing to control their mount from an external Windows computer. Most advanced planetarium and telescope control software packages have an option to use the ASCOM platform, or else they require it outright. (Note that these options are referred to as 'telescope' control, but the telescope is just along for the ride. It is the mount that is being controlled.) We recommend that you select the ASCOM interface if it is an option in your software. The ASCOM option will be called the Telescope API (Application Programming Interface) This API will then allow you to use the Astro-Physics V2 Driver. The ASCOM Platform and the AP V2 driver will provide you with more comprehensive and fail-safe control of your mount.

The Astro-Physics V2 driver has been developed specifically for Astro-Physics by Ray Gralak. Unlike the earlier driver, this V2 driver is now fully owned and supported by Astro-Physics. It has been through rigorous testing and is being treated as an on-going project. We thank Ajai Sehgal for the first driver, which he developed on his own. It was a monumental effort that has served our customers well for many years. The new V2 driver, however, is much more fully developed and takes advantage of the advances to the ASCOM platform. If you are currently using the old driver, we strongly suggest that you upgrade. Check out the Features of the Astro-Physics V2 Driver that differrentiate it from the earlier driver.

We also advise you to keep your ASCOM updated to the latest version. At the publication of this webpage, ASCOM is in platform 6. This is a major upgrade from Platform 4.x. For a complete listing of the revisions to the standard, go to the ASCOM History Page.

Installing and Updating the ASCOM Platform, Astro-Physics V2 Driver and other Components
In order to use the Astro-Physics V2 driver, you will need to install these components which are discussed in further detail below:

1. Current updates and Service Packs for your Windows Operating System
2. Microsoft DotNet Framework
3. ASCOM Platform - Current Release and Updates
4. Astro-Physics V2 Driver

Microsoft Windows OS and the Microsoft DotNet Framework:
The current release of the ASCOM platform is designed to work with the Microsoft DotNet Framework. It is important that you keep your computer current with the latest updates to the Operating System (i.e. Service Packs) and to the DotNet Framework. The ASCOM website has been pretty good about providing guidance here. As you install the ASCOM platform, you will be instructed which version of the Dot Net Framework is required, either in a warning dialog box as you attempt to install the software, or through instructions on the ASCOM download page. See the section below on the DotNet Framework for more detailed information. Please perform all System and DotNet upgrades BEFORE installing the ASCOM components!

Installing or updating the ASCOM Platform.
If you are installing the platform for the first time, the installation is rather straight-forward once the necessary Windows and DotNet updates have beeen completed. If you are updating from an earlier platform version, pay special attention to any warnings or instructions that you see on the web page or in the installer program. Some platform updates may require that you first uninstall a previous version. The installer program will guide you. At an earlier date, it was recommended on the ASCOM site that you NOT uninstall earlier versions, but that recommendation has now been removed, and is apparently no longer valid. The only valid instruction that we can provide is to follow all instructions on the ASCOM website to the letter! To install, click the link below and click the download button on the respective web page. Also be sure to install the AP V2 driver after the full platform installation is finished as described in the instructions a bit further down.

Ascom Driver Download For Windows 10

PLEASE NOTE: Since it is important to use the latest versions of the platform, we provide the necessary links to the various web pages where the most current files can be found. Please add these pages to your favorites (bookmarks) and check regularly for updates!

ASCOM Platform 6.x.
Simply click the link above to go to the ASCOM website's home page. On the right hand side of the page is a Platform 6 Download Box. You should also install Platform 6, Service Pack 1. Click the download button and follow the installer instructions to install the platform from the website. In a normal installation, you should then be instructed to proceed to the most recent update release of the platform. Be aware that the latest platform update may also require the latest DotNet upgrade. This is why we advise keeping your Windows Operating System and DotNet Framework updated.

AstroPhysics V2 Driver
This is a completely new driver conforming to the ASCOM V2 Standard. To use this driver, the ASCOM Platform 5.x or later must be installed (Platform 6 is recommended). It will not work with earlier platforms. The AP V2 driver page can also be accessed through the ASCOM website.

To install the driver, simply click the link in the QuickLinks table under the 'Latest Version' heading and either run the file or save it and run it later. You do not need to uninstall a previously version version of the driver, even if you want to install an older version over the top of a newer version.

This page will always have the latest help documentation for the driver. Since the driver and the documentation are both ongoing works in progress, we suggest that you also bookmark this page and check back often for the latest versions.

Instructional Videos for the AP V2 ASCOM Driver - MPEG 4 movie files:
Installing the AP V2 Driver
Setting up your AP V2 Driver
Operating your Mount with the AP V2 Driver

Features of the Astro-Physics V2 ASCOM driver as compared to the v4.1.xx driver:

• Adheres to the ASCOM Telescope V2 Standard.
• Has a Control Window which provides comprehensive status and control over mount operations.
• The driver is a telescope 'hub', meaning multiple ASCOM client applications can connect simultaneously. The old driver only allowed a single client application thus requiring the use of the POTH driver. The new driver does not require POTH.
• Provides robust communications with the mount, retrying commands if it detects a communications error or corruption in a response message.
• Saves multiple observing/imaging site coordinates.
• Can be configured to convert SYNC commands to RCAL commands to prevent possible mount mis-positioning. (Recommended!)
• Caches common commands that client applications query (RA/Dec/Alt/Az/Pier Side/Sidereal Time/Time) so serial port traffic does not become excessive when many clients are connected simultaneously.
• Provides a Meridian delay feature like PulseGuide and the Astro-Physics keypad have.
• Provides custom RA/Dec tracking rates for both GTOCP3 and later mounts.
• Monitors and reports communications errors.
• Provides asynchronous PulseGuide support. This allows autoguider moves to be made to both RA and Dec simultaneously.
• Provides control over reticle brightness (GTOCP1 through GTOCP3).
• Provides a handy icon in the system tray that provides quick access to status and certain commands.
• Incorporates comprehensive logging.
• Provides a focuser driver for DC synchronous focus motors operated through the GTOCP3 Control Box.

Some Special Notes on using The Sky from Software Bisque
To use the ASCOM interface from The Sky planetarium software, you will need to install a plug-in. Instructions for this are on the ASCOM website at this link in the FAQ pages. Scroll down to the section entitled: 2. TheSky Controlling a Telescope With an ASCOM Driver.