VintageBigBlue.org

 

Re: PHD 2 (was: Dec drift)


Aug 9, 2013

 


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#53143 Aug 9, 2013

Hi Andy,



Very neat! Looks like some really good work is being done on PHD2. Looking forward to testing it out soon. May even consider running it on my Macbook, once there is a build for it ;-)



Regards,



-Paul

--- In Losmandy_users@yahoogroups.com, Andy Galasso andy.galasso@...> wrote:

>

> For those of you using PHD for drift alignment, you may want to consider

> giving PHD2 (OpenPHD) a try. One of the improvements in PHD2 is drift

> alignment assistancecode.google.com/p/open-phd-guiding/wiki/DriftAlignmentWithPHD2>.

> We are looking for people to try PHD2, and would welcome your feedback on

> the OpenPHD discussion

> groupgroups.google.com/forum/#!forum/open-phd-guiding>.

> PHD2 is still under development but is quite stable for many combinations

> of imaging gear (Losmandy mounts via the Gemini ASCOM driver are well

> tested and stable.) PHD2 installs separately from from PHD1 and does not

> affect your PHD1 installation or settings, so you can try PHD2 and go back

> to PHD1 without any side-effects if you wish.

>

> You can download the latest PHD2 development snapshot from

> hereadgsoftware.com/phd2/> (sorry

> we only have a Windows installer right now; Mac users will need to wait for

> the soon-to-come PHD2 Beta). Scroll to to bottom of that page to see a list

> of PHD2 features/improvements.

>

> Andy Galasso

>

>

>

> On Fri, Aug 9, 2013 at 8:37 AM, Alexander Brown sandybrown1973@...>wrote:

>

> > If you are getting a lot of drift after 15 secs of tracking then your polar

> > alignment is off by more than 10 arc seconds, a lot more. If you have a

> > gemini two it has a polar alignment feature that will get you pretty close,

> > close enough for a 1 min exposure anyway. If not you want to drift align

> > until you get no movement for about 10 mins in a12 mm eye piece. You can

> > use you web cam a a guiding software called phd, this is the easiest way.

> > Here is a tutorial

> >

> > sarcasmogerdes.com/download/Drift-alignment-using-PHD-graphs.pptx

> >

> > Add a www. To the front of the link.

> >

> > Cheers sandy

> >

> >

> > On Friday, 9 August 2013, stefrum1974 wrote:

> >

> > > **

> > >

> > >

> > > Dear All,

> > >

> > > Am really enjoying my GM8 and thanks for advice so far. Just a quickie. I

> > > was trying some unguided deep sky photography, using a ccd I have. I used

> > > the CCD polar alignment advice posted on this site in the files section

> > > (thanks for that by the way!!). I noticed that there was significant

> > drift

> > > in dec after 15 seconds. My estimate is about 10arcsec of drift (perhaps

> > a

> > > little less). It's difficult to judge, but stars are definitely

> > elongated.

> > > Is this normal for this mount? Have I not quite balanced the mount

> > properly?

> > > I was just wondering, as I was hoping to achieve about 1min unguided...

> > >

> > > Cheers in advance,

> > >

> > > Stef

> > >

> > >

> > >

> >

> >

> > --

> > Sent from Gmail Mobile

> >

> >

> > [Non-text portions of this message have been removed]

> >

> >

> >

---------------

> >

> > Yahoo! Groups Links

> >

> >

> >

> >

>

>

> [Non-text portions of this message have been removed]

>



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