I don't subscribe. Seems odd as the Daystar is electronically calibrated and tuned to deliver .5 A. I have compared Vaughn's .4 with the clubs .5, the difference is profound, little or no difference when telescope's were switched. I would think Coronado would be happy to announce that their filter improves Daystar performance.
Would be interested in seeing if it works, sounds like a lot of work for experiment based on a caption of a photograph (typo's do happen). Also, the SolarMax was designed scopes under 3,000 mm., both the 60 and 90. Anyway it might be better to use the 50mm f 30 at 1,500mm's, probably would take less adaption also. So, the article says it does improve performance? Who wrote it?
I'm not home so I don't have the magazine handy. Look towards the rear of the magazine in the images area. I think it's the only H-Alpha image of the Sun (not an article, rather it's an image with the caption describing the stack).
patrick
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