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Peter Zetner | all galleries >> Astrophotography >> Solar Photos (2014+) >> Miscellaneous > 104815_110523_montage.jpg
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28-JUL-2014

104815_110523_montage.jpg

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Date/Time28-Jul-2014 20:32:39
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Peter Zetner23-Aug-2014 18:14
I can't resist playing with Omega (eBay) filters! Here are two AR shots. I was hoping for sub-Angstrom bandpass with inclusion of the Lunt etalon but it looks to be a couple of Angstroms (reflectivity of the etalon surfaces must really be optimized for H alpha). It was easy to tune the etalon to peak on a single Na line from a lamp but tuning while observing didn't yield any noticeable changes in contrast on the disk. More playing required!
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