Forgot Password
Pentax Camera Forums Home

Show Printable Version Search this Thread
09-27-2015, 06:04 PM   #1
Junior Member

Join Date: Aug 2015
Posts: 34
Attaching a telescope

Over 25 years ago, I bought a small telescope. Upon rediscovering it recently, I noticed it was designed to be mounted to old 35mm SLR cameras. Can I mount this to my K-50 with an adapter of some sort? Looking on eBay, I found something that seems like it may work: Qualide T Mount Lens Adapter for Pentax K 35mm SLR Film Camera 25 166 2227 | eBay

Is this the way to go?

09-27-2015, 06:38 PM   #2
Senior Member

Join Date: Dec 2007
Location: Mechanicsburg, PA
Posts: 172
That should work. There are many different ways to attach an SLR to a scope, depending on what you are trying to shoot. That device is called a T-mount adapter. If you use that to attach the scope, the scope will become a fully manual lens of the same focal length and the same aperture as the focal ratio of the scope. For example, if the scope has a focal length of 400mm and a focal ration of 4, it will function as a 400mm f4 lens. To meter with it, you will have to set the camera to M, choose an ISO, and use the green button to let the camera pick the shutter speed.
09-28-2015, 05:55 AM   #3
dcshooter's Avatar

Join Date: Jan 2011
Location: Washington DC
Photos: Gallery | Albums
Posts: 4,602
If you intend to use it for astrophotography, then green button metering will probably get you a very overexposed and trailed image considering the general across-the frame darkness of most astro images. Better just to experiment manually with shutter speeds.

Since this scope presumably won't be using a tracking mount, you will achieve best results by using multiple exposures at a high ISO and relatively fast shutter speed and then stacking them with one of the various astro stacking packages available out there.
09-28-2015, 04:41 PM   #4
Junior Member

Join Date: Aug 2015
Posts: 34
Original Poster
Thanks for the tips and suggestions, guys!

I've ordered a T-Mount and will experiment with exposure and ISO once I start taking pics.

09-30-2015, 07:30 AM   #5
Veteran Member
nanhi's Avatar

Join Date: May 2009
Location: Bangalore, India
Photos: Gallery | Albums
Posts: 440
Was that the right adapter?? Or there is something better? How does the telescope - camera combo work? Please provide some detailed technical information.
Do post some photos too.

Such useful threads should have a proper closure as some of us have Telescopes too.
09-30-2015, 04:02 PM   #6
Site Supporter
Ex Finn.'s Avatar

Join Date: Nov 2007
Location: Southern Maryland.
Photos: Gallery | Albums
Posts: 6,283
Did you get a T-mount to eye-piece adapter also?.
From left to right: K-mount to T- mount adapter, T-mount to 2" eyepiece and a T-mount to 1.25" eyepiece adapters.
Attached Images
View Picture EXIF
PENTAX K-7  Photo 

  • 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!
35mm, adapter, camera, dslr, ebay, photography, slr, telescope
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Similar Threads
Thread Thread Starter Forum Replies Last Post
Architecture Telescope-maker heaven: a short set DeadJohn Post Your Photos! 5 08-11-2014 03:58 PM
Telescope Night - with a Pentax! LaurenOE General Talk 3 12-20-2013 08:41 PM
Storks in a nest filmed with a Sky-Watcher ED80 Pro telescope and a Pentax K-5 sindbad1 Photographic Technique 5 04-29-2013 05:25 PM
Attaching a K200 to a microscope BlueyTheDog Pentax DSLR Discussion 2 04-07-2011 01:30 AM
Attaching M42 adapter permanently to a lens Tim_R Pentax SLR Lens Discussion 9 10-07-2010 05:45 AM

All times are GMT -7. The time now is 09:41 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]