Forgot Password
Pentax Camera Forums Home

Show Printable Version Search this Thread
02-05-2009, 10:39 PM   #1
Veteran Member
Das Boot's Avatar

Join Date: Feb 2008
Location: Sparkle City, South Cackalacky
Photos: Gallery
Posts: 689
K200d, Low Light, & the Barndoor

I decided to try and build a cheap barndoor (scotch mount) to track stars. The inspiration was a picture I saw where the stars in the background should have been trailing, but weren't. So I started looking around and found some plans and slapped one together in about 45 minutes. It works quite well - Here's a picture of it:

It's fairly easy to build and doesn't cost much. The rifle scope I put on it cost around $20 and was more than the wood, screws and glue that made up the entire mount. You don't really need the rifle scope depending on the lens you use. The higher the mm the more acurate your alignment with Polaris (north star) has to be.

This was my first shot with a FA50 1.4 shot at 2.8, ISO 800, 2 minutes. It's of Orion and I had a little light pollution in the bottom right corner:

Here's my second shot with an older 135mm Vivitar lens shot at 5.6, 5 minutes, ISO 100. This is suppose to be the focal limit of the mount (around 200mm equiv.) I cranked it by hand and the results were good for how it was shot - though they could be better. There was a little trailing, but not bad for 5 minutes turning it by hand.:

I just wanted to post a thread about picture taking and not a lot of complaining about ________. There's so many aspects to photography that you could never get bored - I just wanted to share something new that I ran across (it's a lot cheaper than LBA).


  • 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!
barndoor, camera, cost, dslr, iso, lens, lot, minutes, mount, photography, picture, scope, shot
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Similar Threads
Thread Thread Starter Forum Replies Last Post
FA 50mm & K-x on Low Light JHD Pentax SLR Lens Discussion 3 04-26-2010 04:30 PM
K200d: Incorrect metering in low light conditions? flamenco Pentax DSLR Discussion 29 11-28-2009 02:50 AM
K-7 Owners: How is low light AF with DA21 & FA 43. pcarfan Pentax News and Rumors 12 07-29-2009 10:38 AM
K200D low light/high iso performance indytax Pentax DSLR Discussion 22 02-07-2009 07:49 PM
K100D vs K200D for low light indoor portraits Pierrot Pentax DSLR Discussion 4 04-02-2008 08:25 AM

All times are GMT -7. The time now is 06:47 PM. | See also:, 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?
Creating a FREE ACCOUNT takes under a minute, removes ads, and lets you post! [Dismiss]