## star finding

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• Hi Folks,    I am trying to find a binary pair, but the directions are rather vague.    They all seem to agree 1 degree west and slightly N of another
Message 1 of 5 , Jul 5, 2014
Hi Folks,
I am trying to find a binary pair, but the directions are rather vague.
They all seem to agree "1 degree west and slightly N" of another
obvious star pair.
My question is:  How far is one degree from a star?  How does one
determine this in a scope [i.e., is it different in a 4.5" and 6"?]
I will appreciate any help with these questions.
Thank you.
Lance
• Well, it depends on a lot of things. The field of view of your scope depends upon the focal length and ratio of your telescope and the focal length and
Message 2 of 5 , Jul 5, 2014
Well, it depends on a lot of things. The field of view of your scope depends upon the focal length and ratio of your telescope and the focal length and relative field of view of your eyepiece. The actual aperture of the telescope has little to do with field of view.  My CPC 1100 can have a field of view of nearly two degrees, or less than 1/8 degree depending upon what eyepiece is in it and if I'm using a focal reducer or Barlow.

On Jul 5, 2014, at 11:10 AM, "lance biechele ltb0076@... [delmarvastargazers]" <delmarvastargazers@yahoogroups.com> wrote:

Hi Folks,
I am trying to find a binary pair, but the directions are rather vague.
They all seem to agree "1 degree west and slightly N" of another
obvious star pair.
My question is:  How far is one degree from a star?  How does one
determine this in a scope [i.e., is it different in a 4.5" and 6"?]
I will appreciate any help with these questions.
Thank you.
Lance

• Adding to Mike s comments... One way to judge degrees in your particular scope/eyepiece combination is a moon width . The moon is about 1/2 degree wide - so
Message 3 of 5 , Jul 5, 2014
One way to judge degrees in your particular scope/eyepiece combination is a "moon width".  The moon is about 1/2 degree wide - so if you know your field of view is close to a full moon then you know you need to star hop about two fields to be about 1 degree from a known object.
Another way is to compare your view to a star chart.  If you can identify two stars in your view with those on the chart you can measure on the chart to determine the degrees or minutes in your view.
Greg

On Sat, Jul 5, 2014 at 11:43 AM, 'Michael P. Borgia ' mborgia@... [delmarvastargazers] wrote:

Well, it depends on a lot of things. The field of view of your scope depends upon the focal length and ratio of your telescope and the focal length and relative field of view of your eyepiece. The actual aperture of the telescope has little to do with field of view.  My CPC 1100 can have a field of view of nearly two degrees, or less than 1/8 degree depending upon what eyepiece is in it and if I'm using a focal reducer or Barlow.

On Jul 5, 2014, at 11:10 AM, "lance biechele ltb0076@... [delmarvastargazers]" <delmarvastargazers@yahoogroups.com> wrote:

Hi Folks,
I am trying to find a binary pair, but the directions are rather vague.
They all seem to agree "1 degree west and slightly N" of another
obvious star pair.
My question is:  How far is one degree from a star?  How does one
determine this in a scope [i.e., is it different in a 4.5" and 6"?]
I will appreciate any help with these questions.
Thank you.
Lance

• What binary are you looking for? Sent from my iPhone Douglas Norton www.douglasnorton.com IMCA #7432 www.imca.cc
Message 4 of 5 , Jul 5, 2014
What binary are you looking for?

Sent from my iPhone

Douglas Norton
IMCA #7432

On Jul 5, 2014, at 11:10 AM, "lance biechele ltb0076@... [delmarvastargazers]" <delmarvastargazers@yahoogroups.com> wrote:

Hi Folks,
I am trying to find a binary pair, but the directions are rather vague.
They all seem to agree "1 degree west and slightly N" of another
obvious star pair.
My question is:  How far is one degree from a star?  How does one
determine this in a scope [i.e., is it different in a 4.5" and 6"?]
I will appreciate any help with these questions.
Thank you.
Lance

• It s a difficult one - Struve 2398 [Draco] Thanks, Lance On Saturday, July 5, 2014 12:30 PM, Douglas Norton dnorton618@outlook.com [delmarvastargazers]
Message 5 of 5 , Jul 5, 2014
It's a difficult one - Struve 2398 [Draco]
Thanks,
Lance

On Saturday, July 5, 2014 12:30 PM, "Douglas Norton dnorton618@... [delmarvastargazers]" <delmarvastargazers@yahoogroups.com> wrote:

What binary are you looking for?

Sent from my iPhone

Douglas Norton
IMCA #7432

On Jul 5, 2014, at 11:10 AM, "lance biechele ltb0076@... [delmarvastargazers]" <delmarvastargazers@yahoogroups.com> wrote:

Hi Folks,
I am trying to find a binary pair, but the directions are rather vague.
They all seem to agree "1 degree west and slightly N" of another
obvious star pair.
My question is:  How far is one degree from a star?  How does one
determine this in a scope [i.e., is it different in a 4.5" and 6"?]
I will appreciate any help with these questions.
Thank you.
Lance

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