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ASG Core Products

Mechanical Photon Cages
Remove tilt with our most popular solution. 4 corner tilt removal and pin-point stars.

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Electronic Photon Cages
Remotely remove tilt with precision electronic tilting from your back yard or remote observatory.

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461 Photon Cages
Looking no further than our mechanical & electronic photon cages for the larger medium format setup!

Coming Soon!

RASA 11 Standard System
Upgrade your standard RASA 11 to M54 and 2″ filter sliders and get max benefit from f/2 speeds.

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RASA 11 PRO System
No compromises with large M68 aperture and 50x50mm square filter slider. Full-frame F/2 performance!

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RASA 8 System
Add precision 4-corner tilting, backfocus adjustment, and a fully removable filter slider on your RASA 8!

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Additional ASG Products

Filter Sliders

Filter Slider Boxes

RASA Accessories

3D Printed Parts

Astronomy Equipment

Astronomical Filters

Filter Sliders & Wheels

Astro Cameras

Telescopes

Astronomy Equipment

Used Equipment

Weather & Safety Monitors
Services

ASG Services

Custom Astrophotography Builds
Send all your items to our Oregon offices and will professional build, test, crate, and ship your project. Let us build & test your next Astrophotography setup!

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Product Testing & Design Services
We provide professional grade engineering services and product testing within our professional grade multi-dome observatory.

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Inside our Dual Dome Observatory
With more and more need for a professional observatory structure, we build our unique dual dome building. Follow as we show some of the challenges and benefits to this build.

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Projects

Education & Tutorial Articles

ASG SubInspector
Free software that lets you analyze a folder of fits/xisf images based on HFR, FWHM, Stars, Eccentricity, and overall scoring. Makes it easy to pull bad subs out of a folder.

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Special RASA 11 Light Analysis
What you might like to know about RASA 11 and special optical train considerations. F/2 is fast, and we optimize systems specifically for these scopes.

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Engineering the Electronic Tilter
As one of the first to develop an electronic precision astrophotography camera tilt device, we take a look at the engineering project.

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Collimation, Backfocus & Tilt Guide
Our quick guide to explaining what collimation is, how to quickly setup backfocus, and start adjusting tilt with your astronomy gear.

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Calibration Frames Explained
Creating calibration frames for Astrophotography images is easy! A quick guide to Master Bias, Master Flats, Master Darks, and Master Flat Darks.

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