Jump to content


Astrotrac Astrophotography with DSLR

  • Please log in to reply
3 replies to this topic

#1 Charlie Hein

Charlie Hein

    Voyager 1

  • *****
  • Administrators
  • Posts: 12371
  • Joined: 02 Nov 2003
  • Loc: 26.06.08N, +80.23.08W

Posted 21 April 2013 - 11:12 AM

Astrotrac Astrophotography with DSLR

by Erwin Matys and Karoline Mrazek

#2 stevecoe


    "Astronomical Tourist"

  • *****
  • Posts: 4300
  • Joined: 24 Apr 2004
  • Loc: Arizona, USA

Posted 22 April 2013 - 02:26 AM


A very good introduction to a fine device. I have had mine for 2 years and it does a good job of tracking. Once I got it on the pole accurately it consistently tracked with lenses up to 135mm with no trouble. I have not gotten to the place where I want to fiddle with stacking images, but that day may come.

I also use a Canon 350D and Tacumar lenses with Pentax thread. I like the ease of focus with a lens that has a hard stop at the infinity setting.

I put some red tape over the bothersome LED's and lowered their brightness so that they would not effect the image. I don't like the fact that astronomers would manufacture a device with bright lights on it, but that is my only complaint.

Thank you for a fine article;
Steve Coe

#3 Moey


    Mariner 2

  • -----
  • Posts: 203
  • Joined: 23 Jan 2008

Posted 30 April 2013 - 12:23 AM

Excellent article thanks for that Erwin. Some useful tips there.

#4 Michael Morris

Michael Morris


  • *****
  • Posts: 1563
  • Joined: 05 Jan 2005
  • Loc: Worcestershire, UK

Posted 01 May 2013 - 06:58 AM

Great article, thanks.
The article espouses the virtues of a precisely aligned reticle in your polarscope. Here's a great video on aligning the reticle on a polarscope that I found really useful.

CNers have asked about a donation box for Cloudy Nights over the years, so here you go. Donation is not required by any means, so please enjoy your stay.

Cloudy Nights LLC
Cloudy Nights Sponsor: Astronomics