The ultimate solar imagers filter?? The ultimate visual?
Posted: Fri May 11, 2018 12:09 pm
Solar Spectrum filters tend to go unnoticed, probably because you can never buy one normally without waiting for a very long time!
Well a few have quietly slipped out of the factory and are waiting patiently for new homes.
For the imagers among you, we have access to 6 (six - in case you missed it) 0.3A Solar Observer 1's. These have a 19mm etalon and active heating and cooling. Uniformity on them is apparently superb. Yours for £3665+VAT.
How about something for the eye's? We currently have access to 3 (three) 0.5A Research Grade 46mm Etalons. Again they are actively heated and cooled. With a 55mm Plossl you can experience a full disc with over 4000mm of focal length! Little bit more than the SO1 filter at £9415.83+VAT but hey, nothing else comes close.
Well a few have quietly slipped out of the factory and are waiting patiently for new homes.
For the imagers among you, we have access to 6 (six - in case you missed it) 0.3A Solar Observer 1's. These have a 19mm etalon and active heating and cooling. Uniformity on them is apparently superb. Yours for £3665+VAT.
How about something for the eye's? We currently have access to 3 (three) 0.5A Research Grade 46mm Etalons. Again they are actively heated and cooled. With a 55mm Plossl you can experience a full disc with over 4000mm of focal length! Little bit more than the SO1 filter at £9415.83+VAT but hey, nothing else comes close.