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  1. Can Popper

    Knight Owl EWA eyepieces and Pentax 65

    The air gets pretty thin in the 20mm to 30mm range, unfortunately. Most manufacturers don't really bother with this range probably because many telescopes come with a cheap 24mm or 25mm eyepiece thrown in. From my search, the cheap eyepieces all come with some wart. There are only 2 cheaper...
  2. Can Popper

    Knight Owl EWA eyepieces and Pentax 65

    Well, those are the paper specs. *grin* Like my Pentax SMC zoom has paper specs of 20mm ER but it sure doesn't feel like it; it feels more like it has ER of 13mm. Only way to know conclusively is to take a flashlight and shine it into the scope side of the eyepiece. Point the ocular side of...
  3. Can Popper

    Knight Owl EWA eyepieces and Pentax 65

    That could probably be due to the way the EWA brings the image together. I believe the ER on the EWA 20mm is 17mm while the Siebert is 20mm. So given the larger ocular lens of the EWA and faster converging light path, the EWA has a fatter light cone. Given the ways your eyes are shaped, the...
  4. Can Popper

    Knight Owl EWA eyepieces and Pentax 65

    Actually, the explanation is quite simple and straight forward. You were taking the pictures on a dank rainy day when the light conditions were not so good. On those occasions, the Sieberts (in the 17mm to 19mm and 24mm) will out photograph all the other eyepieces because they use the fewest...
  5. Can Popper

    Knight Owl EWA eyepieces and Pentax 65

    Yup, it comes down to a choice between the 24mm and 28mm. 60 degrees is still fairly wide. The circle size should be between the pics of the Epic 2.3mm and the Ultra 24mm that I posted on the various eyepiece review. Since you already have a 19mm and 20mm, why not give the 28mm a try to see...
  6. Can Popper

    Knight Owl EWA eyepieces and Pentax 65

    Hey Frank, The Televue plossl recommended by Neil would certainly be a nice choice. Comparable to or better than the Siebert Performance 32mm. Before I went with the Seibert line, I also thought long and hard and researched the Televues. Here were the conclusions I came to for each of...
  7. Can Popper

    Knight Owl EWA eyepieces and Pentax 65

    The FOV on the Performance 32mm is 50 degrees (I think), about the same as a plossl. For the Ultra 28, it is 60 degrees. Ultra 24 is 65 degrees. Basically, what you see with FOV as the magnification gets lower is: 20mm - 70 degree 24mm - 65 degrees 28mm - 60 degrees 30mm - 54 degrees 32mm -...
  8. Can Popper

    Knight Owl EWA eyepieces and Pentax 65

    Hi Frank, I've been reading your threads on the digiscoping forum :-) I have a few thoughts knocking around my head. There are three pieces to your digiscoping endeavor. The scope, eyepiece, and camera. I think maybe we should make sure each of the components is working the way it should...
  9. Can Popper

    Knight Owl EWA eyepieces and Pentax 65

    The swallow image is quite pleasing. It don't think it is an unacceptable picture given that you were shooting into the bright sky. You probably had the exposure compensation jacked up to reveal the finer details such as underside feathers and the glint off the eyes of the swallow. Did you...
  10. Can Popper

    Knight Owl EWA eyepieces and Pentax 65

    In my opinion, the Sieberts kick the butt of the Knight Owls. The problem with the cheap ebay eyepieces is that they do not have a flat field and edge to edge sharpness. Thus, when you are digiscoping at say 1x, your picture will always have distortion towards the edges. Another thing is...
  11. Can Popper

    Knight Owl EWA eyepieces and Pentax 65

    I have the Ultra 24mm, the 9mm, and the 7mm and my Williams Optics universal digiscoping adapter fit over all of them with no problem. I now have a Performance 35mm Siebert on the way for short range high quality digiscoping. Some of the great things about the Siebert Ultras is they all come...
  12. Can Popper

    Knight Owl EWA eyepieces and Pentax 65

    Frank, before you plunk down a pile of change for a Pentax 20mm XW, might I suggest getting the Siebert Ultras in the 17mm to 19mm range? The big problem with the Pentax 20mm is that it's barrel is very wide as you can see from this picture...
  13. Can Popper

    Knight Owl EWA eyepieces and Pentax 65

    I went over to the digiscoping forum to check out the advice you were getting. Some of the stuff they do there is pretty extreme. Like that lady who digiscopes by practically standing next to the bird. Man, my gear is too heavy to pull something like that off. There is another guy who...
  14. Can Popper

    Knight Owl EWA eyepieces and Pentax 65

    Frank, don't forget to experiment with the exposure compensation feature on your camera. That will go a long way towards eliminating the overexposed pics that you are currently getting. I often have to take several pictures with different exposure compensation settings to get pics that are...
  15. Can Popper

    Knight Owl EWA eyepieces and Pentax 65

    Good stuff, Frank. Looks like you aren't having any problems with eyerelief. One of the things I found with taking pictures is that I really have to learn the manual controls on my digital camera. The auto controls often results in overexposure or improper tones. Also the photometry on how...
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