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Another Sirius B "The Pup" thread

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#1 LivingNDixie

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Posted 18 February 2013 - 10:42 PM

I have two questions, is there a computer program that shows the location of the Pup like the apps from Sky and Telescope and Software Bisque? Secondly how does it compare to spotting say the moons of Uranus or Neptune? I know that many compare Sirius B with other double stars, but I don't really have any experience with many doubles and was just curious.

I tried for Sirius B last night and no really knowing where to look at Sirius I was a little overwhelmed with the prospect. Here was a map that I did have access to.
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#2 Cotts

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Posted 19 February 2013 - 12:18 AM

1. Try looking at Rigel first with the same magnification you're planning to use on Sirius. The separation of both Rigel and Sirius AB are about 10 arc seconds. You'll get an idea of how far away from the primary to look.

2. In your SCT, assuming you are looking roughly south and assuming your diagonal is more or less pointing north/up/perpendicular to the ground, the Pup will be on the right.

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#3 LivingNDixie

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Posted 19 February 2013 - 11:04 AM

Thanks David, that helps.

#4 Bonco

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Posted 19 February 2013 - 03:56 PM

The Pup is in Position angle of approximately 90 degrees. Which means its following Sirius. You can determine the relative position by turning off your drive. Sirius will drift and the pup will be following.
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#5 CelestronDaddy

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Posted 19 February 2013 - 04:42 PM

Bill - Thanks for that information! :bow: I've been looking for Sirius B also ....

#6 rookie

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Posted 19 February 2013 - 06:57 PM

Preson, Here is a sample of what you can find in the Standard Skytools3:
Sirius AB
AB: -1.46+8.5 mag, AGC 1, ADS 5423, B=AGC 1B
Good Orbit: P=50.1 yr, a=7.50"
PA 83° Sep 9.84" (2013.1) : not visible currently (splittable at best)
SCT eyepiece view

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#7 rookie

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Posted 19 February 2013 - 07:19 PM

Skytools3: Rigel AB
AB: 0.13+10.4 mag, STF 668, ADS 3823, B=STF 668B
PA 203° Sep 9.20" (2001)
SCT eyepiece view

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