Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
08-29-2011, 07:00 PM   #1
Site Supporter
Site Supporter




Join Date: Nov 2006
Location: Candiac, QC, Canada
Photos: Gallery
Posts: 350
Question about O-GPS1.

When you use the Astrotracer function of the GPS, the focal length of the lens in use is the limiting factor for the exposure time. Does anybody know what would be the maximum focal length of the lens that can be used? It would be interesting to be able to use a small telescope. Thankd for any info.
Mike.

08-30-2011, 12:27 PM   #2
Pentaxian
Wheatfield's Avatar

Join Date: Apr 2008
Location: The wheatfields of Canada
Photos: Albums
Posts: 10,792
They don't list it in the documentation. I just got one of them, my plan is to go out at some point later this week and do some start shots. Just waiting for a clear evening.
I'll test it from 15 right up to 600mm
08-30-2011, 12:32 PM   #3
Veteran Member
bluespearbone's Avatar

Join Date: Jul 2007
Location: Derbyshire, United Kingdom
Posts: 325
Guess a limiting factor depends on the manual lens/body. Have nothing at the maximum length, pre Pentax-F or otherwise, but noticed on the K-r that the maximum FL, for shake reduction, was 800mm.
08-30-2011, 08:06 PM   #4
Site Supporter
Site Supporter




Join Date: Nov 2006
Location: Candiac, QC, Canada
Photos: Gallery
Posts: 350
Original Poster
About the GPS.

I think that 800mm would be about right. I ordered mine from Henry's in toronto this morning. I really need it because I get star trails with a 5 seconds exposure and a 300mm lens. Take care.
Mike.

Reply

Bookmarks
  • Submit Thread to Facebook Facebook
  • Submit Thread to Twitter Twitter
  • Submit Thread to Digg Digg
Tags - Make this thread easier to find by adding keywords to it!
length, lens, tripod
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
K5 + O-GPS1 + DA* 16-50mm problem PointClick Pentax K-5 9 09-15-2011 11:28 AM
O-gps1 janne Pentax Camera and Field Accessories 3 08-24-2011 03:47 AM
O-GPS1, is it a design mistake? i83N Pentax DSLR Discussion 18 07-28-2011 09:19 PM
O-gps1 Mike Cash Pentax Camera and Field Accessories 12 07-13-2011 12:47 PM
O-gps1 OK5 Pentax K-5 3 06-05-2011 02:50 AM



All times are GMT -7. The time now is 05:22 PM. | See also: NikonForums.com, CanonForums.com part of our network of photo forums!
  • Red (Default)
  • Green
  • Gray
  • Dark
  • Dark Yellow
  • Dark Blue
  • Old Red
  • Old Green
  • Old Gray
  • Dial-Up Style
Hello! It's great to see you back on the forum! Have you considered joining the community?
register
Creating a FREE ACCOUNT takes under a minute, removes ads, and lets you post! [Dismiss]
Top