Dwarf2 filters the Sun
Taken by Dr. J. Wayne Wooten on May 19, 2023 @
Pensacola, Florida
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I am delighted the new Dwarf II comes with two ND5 high quality filters (comparable to Baader Astrosolar ND5, excpet not bluish image) for everyday sunspotting. The resolution of sunspots and weith great seeing, even granulation, is amazing for a 1.25" objective! Dwarf Labs has just added solar tracking to their downloaded updates as well. This will make it ideal for classroom and edcational use of solar observing anytime, not just during the two upcoming eclipses. The wide variety of exposure settings will also be ideal for totality next April! What a deal for $400.
Of course, I love the use of filters, and just bought the Edmund 1" 589nm soldium filter to catch comet Mercury. I have tried it on the Sun, and found it is dense enough (combined with the ND5 filter) to slow down the exposure times and not give as good a resolution as with the solar filter alone. I also used the IR CUT/PASS switch on the D2 to get better depth of the sunspot shots, using even shorter exposures for better disk detail. Then I decided to try the Lumicon hydrogen alpha 1.25" 7A bandpass for possible chromosphere detail. I found that in order to capture disk detail, the expousre range was very small to capture the sunspots, but when I blew up the limb, think I may see hints of prominences, permaking this the cheapest and smallest Ha scope ever. More research to come.
In the shots from Friday, May 19, 2023, the big spot group at lower left (SE limb) is AR 3310, and above it is new group AR 3311 and AR 3313 (the one I saw flaring on the limb Thursday). To the right ,large AR 3305 has declined in activity, with AR 3308 trailing it, and AR 3309 also heading over the SW limb.
Photographer's website:
https://www.facebook.com/groups/80860174301/photos/?filter=albums
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