Forgot Password
Pentax Camera Forums Home

Show Printable Version Search this Thread
04-22-2015, 04:48 AM   #31
Veteran Member
JimmyDranox's Avatar

Join Date: Oct 2012
Location: Ploiesti, Romania
Photos: Gallery | Albums
Posts: 1,632
Original Poster
There are some eyepieces used for projection, which have a T2 or M43/0,75 on the camera side like Baader Hyperion. But afocal photography is very rare used, despite is different magnifications, mostly because it can bring a lot of other problems, heavy vignetting, and low light.

The fact that the image is upside-down, is the smallest. Real good astro images are made after a lot of PP, not in only one program. Often, this means hours of work on computer to get one picture from a big number of raw images stacked together.

04-24-2015, 11:51 AM   #32
Veteran Member
pete-tarmigan's Avatar

Join Date: Apr 2009
Location: Conception Bay South, New-fun-land
Photos: Gallery
Posts: 1,267
QuoteOriginally posted by JimmyDranox Quote
I can't say exactly about this piece, but from my experience, adapters for spotting scopes have a different barrel than 1,25'' or 2'' which are standard for telescopes. What I can see from specifications, is that this adapter is in fact a projection lens. And with 12.5 fix aperture (focal/diameter ratio), and magnification included, I wouldn't recommend it for use with anything other than Pentax spotting scopes.

With the adapter set up I have described before, you will have the native F/D ratio of the telescope, which can be much faster for some of them. And you can modify it with the help of a Barlow lens.

What kind of mirror scope did you have?
If you're referring to me, I don't have a mirror scope (I have the PF-80EDA). I was bringing up the PF-CA35 in case it might be usable by the original poster.

The PF-CA35 has the same diameter barrel as the eyepieces for the Pentax PF-65ED, PF-80ED and PF-100ED scopes, i.e., the XW and XF series eyepieces, which have a barrel diameter of 1.25 inches.

  • 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!
binoculars, orion, pentax, pentax news, pentax products, pentax rumors, products, products at orion, telescope
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Similar Threads
Thread Thread Starter Forum Replies Last Post
Pentax DSLR in-store stock at Microcenter? K57XR Pentax DSLR Discussion 6 11-26-2014 07:41 PM
K30 prices at Pentax Online Store kjfishman Pentax K-30 & K-50 3 11-25-2014 07:56 PM
Pentax Q + 01 Lens $249 at Frys IN STORE Docrwm Pentax Price Watch 4 07-10-2013 04:03 AM
PENTAX Demonstrates Host of New Products At PhotoPlus Expo 2012 bobell69 Pentax News and Rumors 33 10-29-2012 09:37 AM
Pentax products at Photokina - disappointment or admiration? ogl Pentax News and Rumors 252 10-29-2008 07:33 AM

All times are GMT -7. The time now is 12:01 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]