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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!

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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

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RASA Accessories

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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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Education

Education & Tutorial Articles

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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ASG Astronomy

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Filter Sliders & Wheels

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Most Popular Items

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ZWO 5-Position Electronic Filter Wheel for 2-inch Mounted or 50.4mm Unmounted Filters

ZWO 5-Position Electronic Filter Wheel for 2-inch Mounted or 50.4mm Unmounted Filters

$299.00

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ZWO 5-Position Electronic Filter Wheel for 2-inch Mounted or 50.4mm Unmounted Filters

$299.00

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ZWO 7-Position Electronic Filter Wheel for 2-inch or 50.4mm Filters

ZWO 7-Position Electronic Filter Wheel for 2-inch or 50.4mm Filters

$399.00

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ZWO 7-Position Electronic Filter Wheel for 2-inch or 50.4mm Filters

$399.00

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Standard Filter Slider System

Standard Filter Slider System

$149.00

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Standard Filter Slider System

$149.00

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3D Printed

Filter Slider 2inch - 3D Printed

Filter Slider 2inch - 3D Printed

$15.00

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Filter Slider 2inch - 3D Printed

$15.00

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CNC Aluminum

Filter Slider 2inch - CNC Aluminum

Filter Slider 2inch - CNC Aluminum

$39.00

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Filter Slider 2inch - CNC Aluminum

$39.00

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3D Printed

Filter Slider Box - Blank

Filter Slider Box - Blank

$25.00

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Filter Slider Box - Blank

$25.00

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3D Printed

Filter Slider Box - RGB

Filter Slider Box - RGB

$25.00

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Filter Slider Box - RGB

$25.00

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3D Printed

Filter Slider Box - HOS

Filter Slider Box - HOS

$25.00

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Filter Slider Box - HOS

$25.00

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3D Printed

Filter Slider Box - UBVRI

Filter Slider Box - UBVRI

$25.00

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Filter Slider Box - UBVRI

$25.00

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3D Printed

Filter Slider Box - LRGB

Filter Slider Box - LRGB

$25.00

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Filter Slider Box - LRGB

$25.00

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3D Printed

Filter Slider Box - LRGBHOS

Filter Slider Box - LRGBHOS

$30.00

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Filter Slider Box - LRGBHOS

$30.00

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PRO M68 Filter Slider System

PRO M68 Filter Slider System

$155.00

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PRO M68 Filter Slider System

$155.00

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PRO Filter Slider - 3D Printed

PRO Filter Slider - 3D Printed

$25.00

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PRO Filter Slider - 3D Printed

$25.00

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CNC aluminum

PRO Filter Slider - 50x50 - CNC Aluminum

PRO Filter Slider - 50x50 - CNC Aluminum

$75.00

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PRO Filter Slider - 50x50 - CNC Aluminum

$75.00

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Filter Assembly for RASA 8 + 2600/QHY600SBFL

Filter Assembly for RASA 8 + 2600/QHY600SBFL

$249.00

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Filter Assembly for RASA 8 + 2600/QHY600SBFL

$249.00

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