Telescope Filter: Coronado H-Alpha 90mm Etalons & BF30 Blocking Filter - $2,699 (Bay Park)

Telescope Filter: Coronado H-Alpha 90mm Etalons & BF30 Blocking Filter 1

Telescope Filter: Coronado H-Alpha 90mm Etalons & BF30 Blocking Filter 1 thumbnail

condition: excellent

make / manufacturer: Coronado H-alpha

model name / number: SolarMax

size / dimensions: 90mm and BF30

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The Sun is at peak activity - so this is a good time for a top-end H-alpha scope.

When the solar activity dips, you'll NEED a top-end H-alpha scope.

I'm selling a SolarMax II 90mm external Etalon with Rich-View Tuning and a Coronado BF30. Coronado's Best (the difference between SolarMax II and SolarMax III etalons is housing cosmetics).

I have a tilt-tune adapter that I'll throw in (it's a little finnicky).

By far the best, brightest, mosted detailed and contrasty views I've seen of the sun. (I've had stacked SolarMax II 60mm and 90mm (with the smaller internal etalons)).

Includes a Coronado case for the etalons and BF30.

Local sale only.

Telescope Filter w/standard adapter (may not mount directly on your telescope)

post id: 7885843621

posted: 2025-10-02 15:21

updated: 2025-10-18 17:54

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Telescope Filter: Coronado H-Alpha 90mm Etalons & BF30 Blocking...

The Sun is at peak activity - so this is a good time for a top-end H-alpha scope. When the solar activity dips, you'll NEED a top-end H-alpha scope. I'm selling a SolarMax II 90mm external Etalon...