Hi Rob, I can see the companion to Mizar in my 15 x 50mm image stabilized binoculars. It is not .5" but 14" of separation. Maybe you saw them split. They are easy at 20 x. When referring to distance of separation between SAO 28748 I should have clarified that it was one minute of RA. Dawes limit for a 100 mm scope is 4.56/4 = 1.14". Even at low power splitting Mizar should be easy. Clear Skies, Don -----Original Message----- From: Utah-Astronomy [mailto:utah-astronomy-bounces@mailman.xmission.com] On Behalf Of Rob Ratkowski Sent: Wednesday, April 22, 2015 10:02 AM To: Utah Astronomy Subject: Re: [Utah-astronomy] Mizar (solved) Hi Don I know that star and that is not it. What I am seeing is close to Mizar, about 1’ and SSE. Sao 28748 is 8’16” from Mizar. Friday at the STEM Conference in Wailea I saw the triangle but close to Mizar was this other star and I didn’t remember it being there. The companion to Mizar is at .5” and shouldn’t be seen in BT 100 binos. I saw the star again last night in the binos and in the C9.25 under different magnifications. This is a very odd thing, I appreciate the help in trying to solve this oddity. Aloha Rob
On Apr 22, 2015, at 5:41 AM, Don J. Colton <djcolton@piol.com> wrote:
Hi Rob,
I observed Mizar with a 15" reflector last night. There was an 7.9 magnitude star SAO 28748 about one minute southeast of Mizar at 1:28 AM MDT. It forms a triangle with Alcor and Mizar. Since the handle of the Big Dipper rotates the cardinal directions of the star with respect to Mizar also rotates. Perhaps this is the star you saw?
Clear Skies,
Don Colton
-----Original Message----- From: Utah-Astronomy [mailto:utah-astronomy-bounces@mailman.xmission.com] On Behalf Of Rob Ratkowski Sent: Wednesday, April 22, 2015 12:06 AM To: Utah Astronomy Subject: Re: [Utah-astronomy] Mizar (solved)
Well it's still there!! I guess about 1' separation, I put in 9mm EP's (58x) and still there. Swung over to Sirius and no reflection, back to Mizar and I shook the binos and the 'x companion' moved in sync. Other bright stars and no ghost companions. And then the clouds came in. I'll wait a bit and maybe we'll clear, I'll get the 9.25 ready though seeing is about 5 tonite
Rob
Sent from Rob's iPad
On Apr 21, 2015, at 7:01 PM, Wiggins Patrick <paw@getbeehive.net> wrote:
Just imaged Mizar again but this time with the scope and camera rotated 180 degrees.
No sign of anything unusual.
Bummer...
patrick
On 21 Apr 2015, at 15:27, Rob Ratkowski <ratkwski@gmail.com> wrote:
Oh well, it is curious though that scopes and binos see the same reflection. I'll set up the 9.25 still at home and have a look again, maybe even image it if we have a clear evening
Aloha Rob
Sent from Rob's iPad
On Apr 21, 2015, at 10:53 AM, Wiggins Patrick <paw@getbeehive.net> wrote:
Sorry Rob, but the replies I'm getting from the pros on the other list I'm on are like this one:
I neglected to compare the 1-second image with the 5-second image. When you do so it is clear that both Mizar components are getting reflected, and both move together between the two images. Too bad it’s not real. L
Oh wel, maybe next time.
patrick
On 21 Apr 2015, at 10:21, Rob Ratkowski <ratkwski@hawaii.rr.com> wrote:
If we ever get out of the trade showers I can look again.
R
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