You need a narrow spectrum hydrogen-alpha filter. It is a specialized filter. On Apr 24, 2015 12:14 PM, "Michael Crane" <michaelcrane17@gmail.com> wrote:
So question, I bought the glass filter that goes on the top of my dob, what other filters do you need to see these prominences?
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<div>-------- Original message --------</div><div>From: "John M. Craig" < jmcraig@xmission.com> </div><div>Date:04/24/2015 8:23 AM (GMT-08:00) </div><div>To: utah-astronomy@mailman.xmission.com </div><div>Subject: Re: [Utah-astronomy] Astounding prominence still </div><div> </div>Yes, still visible. Lots of other neat stuff too. The wispy loops on the west limb are still there and amazingly high.
Too bad many of us are in for a mostly cloudy day here in Utah, but get out and see it if you can.
John
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