[AZ-Observing] Re: Images from AASP
- From: Paul Lind <pulind@xxxxx>
- To: <az-observing@xxxxxxxxxxxxx>
- Date: Tue, 9 Nov 2010 11:32:30 -0700
Chris,
Thanks for your comments. The setup has two major problems and needs
redesign. First, the tube is very unstable with temperature. It's sonotube
and was supposed to be temporary. Second, the focuser is a homemade job
that provides a very fine resettable adjustment, but it rotates. It uses a
large 40 tpi threaded collar with one revolution calibrated into 25
divisions, 0.001 inch each. It can be set to much better than 0.001. To
use Images-Plus focusing I need a star in the exact center of the field
because focusing rotates the field. I do use IP for camera control, and
have also used the focus mode to read-out HFD. Focus is slow because I have
to re-acquire the star each time.
Paul
--------------------------------------------------
From: "Chris Schur" <comets133@xxxxxxxxx>
Sent: Monday, November 08, 2010 9:54 PM
To: <az-observing@xxxxxxxxxxxxx>
Subject: [AZ-Observing] Re: Images from AASP
> Paul,
>
> Those are some pretty amazing images with that DSLR.. You can use Images
> Plus and a lap top to get perfect focus every time, how are you focusing
> now?
>
> Clear Skies,
>
> Chris
>
> Schur's Web Portal: http://www.schursastrophotography.com
>
>
> --- On Mon, 11/8/10, Paul Lind <pulind@xxxxx> wrote:
>
>> From: Paul Lind <pulind@xxxxx>
>> Subject: [AZ-Observing] Images from AASP
>> To: az-observing@xxxxxxxxxxxxx
>> Date: Monday, November 8, 2010, 7:29 PM
>> Four images from the AASP taken with
>> my 12.5 inch astrograph are posted on:
>> http://www.pbase.com/paullind/inbox
>> Despite all the trouble I had focusing, a few frames came
>> out ok.
>> Paul Lind
>>
>> --
>> See message header for info on list archives or
>> unsubscribing, and please
>> send personal replies to the author, not the list.
>>
>>
>
>
>
> --
> See message header for info on list archives or unsubscribing, and please
> send personal replies to the author, not the list.
>
>
--
See message header for info on list archives or unsubscribing, and please
send personal replies to the author, not the list.
Other related posts:
