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Photon Cage · RASA 8 holder · 2-inch filters

RASA 8 System

Big cameras on a small RASA.

A Photon Cage with our RASA 8 lockring and thin filter holder, made for ASI 2600 and QHY600 SBFL bodies. You get a removable filter slider plus tilt and backfocus in one device.

RASA 8 Photon Cage package
RASA 8 filter slider and lockring
The RASA 8 holder

Built for the 12.5 mm backfocus group

Large camera bodies leave very little room on a RASA 8. Our lockring and ultra-thin filter holder take 2-inch mounted filters while keeping full 4-corner tilt and independent backfocus.

A ZWO 2600 DUO compatible version is available.

  • ASI 2600 & QHY600 SBFL
  • 2-inch mounted filters
  • ZWO 2600 DUO version
  • 4-corner tilt + backfocus
Watch it work

Set up a RASA 8 with a Photon Cage

The full install, step by step.

Setup · RASA 8

Everything you need to add a Photon Cage to a RASA 8.

Ready when the skies are

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Hand built by us in Oregon, tested in our dual-dome observatory, and trusted by hundreds of imagers on almost every continent.