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Best Android app for EQ polar alignment?

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#1 mostlyemptyspace

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Posted 01 December 2014 - 10:59 PM

Topic says it all. Just got an EQ mount and I'm looking for an Android app to help me polar align. Which do you use?

#2 Sean Wood

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Posted 02 December 2014 - 01:16 PM

Something like these?

https://play.google....ead.polarfinder

 

https://play.google.....polarfinderpro

 

https://play.google....scope.companion

 

https://play.google....=com.nak.astro2



#3 mostlyemptyspace

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Posted 02 December 2014 - 02:24 PM

Yes I saw those, but I was wondering which was the best or which is most popular with you guys. I went ahead and bought PolarFinder just cause it was a dollar, but I'm not sure if it's the best.



#4 Driven1

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Posted 05 December 2014 - 10:21 PM

Tried them all. Pretty much worthless. Best to just use the mount's polar scope and be done with it.



#5 mostlyemptyspace

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Posted 06 December 2014 - 01:08 PM

Tried them all. Pretty much worthless. Best to just use the mount's polar scope and be done with it.

 

But don't you need to know where Polaris is supposed to be lined up in the scope? I've never tried it before so I'm not sure how it works.



#6 Driven1

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Posted 06 December 2014 - 04:14 PM

There should be a polar alignment scope built into your mount and should have an alignment retical built into it. All you really need to know is where Polaris is and get your reticle lined up on it. If you're not sure where Polaris is, there are many pieces of software out there that can show you, as well as printable sky charts on the net. Check the manual for your mount on polar alignment as well.

 

The only reason I tried all of those apps is because I couldn't get a clear view of polaris. I have since learned how to "drift align" the scope. A PITA but it works.



#7 Sean Wood

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Posted 06 December 2014 - 06:09 PM

If you plan on a pier mount for your EQ, or just happen to be out in the field on the occasion of this alignment that this will work there's always this little cheat...lol

http://www.arksky.org/Kochab.htm



#8 DOTrevino

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Posted 22 October 2015 - 01:04 PM

If you plan on a pier mount for your EQ, or just happen to be out in the field on the occasion of this alignment that this will work there's always this little cheat...lol

http://www.arksky.org/Kochab.htm

 

I found this article very useful.

 

thank you for sharing

 

Clear skies



#9 Geo.

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Posted 02 August 2016 - 07:26 PM

Well. for 99 cents I like the Polarfinder app. Polaris is offset from the NCP by about 42' just centering it isn't close. You can do better using the hour angle method, see http://www.myastrosc.../polaralignment

 

Polarfinder provides al the data you need to use this method.

 

PF2.jpg



#10 halx

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Posted 14 August 2016 - 04:51 PM

Do you really need one? (Is that an AP setup?) As Orion provides a simple UMa/Cas reticle with that mount - good enough for the "visual class" alignment.



#11 skfboiler1

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Posted 14 August 2016 - 07:57 PM

 

Tried them all. Pretty much worthless. Best to just use the mount's polar scope and be done with it.

 

But don't you need to know where Polaris is supposed to be lined up in the scope? I've never tried it before so I'm not sure how it works.

 

Yes, use the polar scope for a precise polar alignment.  I attached a YouTube video on how to use the polar scope.  Prior to using the polar scope, you may want to do a rough polar alignment; basically centering the Polaris in your eyepiece with the azimuth and latitude adjustment knobs.  Then precisely align Polaris with the polar scope. 

 

How to use the polar scope.

https://www.youtube....h?v=reW_s59jYKw




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