How does an Autoguider work?

How does an Autoguider work?

The autoguider captures regular snapshots of the sky and a computer compares them to detect star drift caused by the apparent movement of stars across the night sky, issuing corrections to the mount via a cable attached to the autoguide port to keep the mount on track.

What is a guide camera?

Guide cameras usually guide on stars at or near the center of the field of view where the image is good enough with just about any guidescope.

What is an Autoguider in astrophotography?

An autoguider is an automatic electronic guidance tool used in astronomy to keep a telescope pointed precisely at an object being observed. This prevents the object from drifting across the field of view during long-exposures which would create a blurred or elongated image.

How do you do Autoguiding?

Autoguiding is accomplished by sending small corrections to your telescope mount via an ST-4 cable communicating from your guide camera to the mount. You can also autoguide using the pulse-guiding method that utilizes a direct connection from your PC to the telescope mount.

What is a good guiding ratio?

Each pixel in a camera subtends some number of arc seconds per pixel when pointed at the sky. This number is a function of the pixel size of the camera and the focal length of the telescope. So, when you guide, you want to ratio of the two angles to be less than 5 to one at most.

What is a good guide scope?

As an example, if you have a telescope that is 1500mm in focal length, you should select a guide scope with a focal length of at least 1500/5 = 300mm. So, assuming that your main telescope has a focal of 750mm, a good guide scope would have a focal length of about 150mm and an aperture of 50mm.

What is a Celestron Autoguider?

The NexGuide Autoguider from Celestron is a stand-alone system that eliminates the necessity of tethering it to a laptop computer for finding or tracking your celestial targets with a motorized alt-az or equatorial mount. A Aptina MT9V034C12STM CMOS sensor allows the tracking of even faint stars, and the larger 5.6×4.

What is equatorial tracking mount?

An equatorial mount is a mount for instruments that compensates for Earth’s rotation by having one rotational axis parallel to the Earth’s axis of rotation. This type of mount is used for astronomical telescopes and cameras.

What is the best guide scope?

The Best Telescope Guide Scopes Reviewed

  • SVBONY SV165 Mini Guide Scope.
  • SVBONY SV106 Guide Scope.
  • Astromania 50mm Compact Deluxe Finder & Guide Scope Kit.
  • Orion 60mm Multi-Use Guide Scope.
  • Astromania Camera Easy Autoguiding Set60.
  • Solomark F60 60mm Guide Scope.
  • Orion 30mm Ultra-Mini Guide Scope.

How do you focus a scope Zwo guide?

Insert the eyepiece instead of the camera, and without refocusing the scope, slide the eyepiece until you get focus. Then tighten the parfocal ring to “stop” the eyepiece against the focuser right at the focus point. This way, whether you insert the camera or the eyepiece, both should be in focus at the same time…

Is Starsense a autoguider?

Starsense is a standalone unit. It’s usually installed where your guidescope used to be however some people will choose to keep both. Once you’ve installed and calibrated Starsense to your particular scope, it iwll automatically align the scope in 3 minutes or less (make sure you’ve updated the firmware first!).

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