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  1. Derry

    Testing prime focus digiscoping setups

    same issues here,, Vist on the new HP would not allow the SVC file to be saved,, tried on the wifes laptop and saved but the output is not good,, Derry
  2. Derry

    Testing prime focus digiscoping setups

    Jules, could you e-mail us your original file that is not in the PDF format,,?? Derry
  3. Derry

    Testing prime focus digiscoping setups

    Jules,, tried a few more printer settings with various photo software and when best is used the lines remain jagged out of my HP 970 CXI,, agree ya would think best should be cleaner and clearer than normal,, did select the new HP paper I purchased,, doubt if the purple color will hurt as the...
  4. Derry

    Testing prime focus digiscoping setups

    Jules looks pretty good,, I still need to go to Staples and pick up some better paper,, will do today and try a test shot before the sun goes down,, is 35.6C here today so will wait till it cools a tad,, humidity feels like 90%,, looks like the trees are even sweating,, EDIT,, have the very...
  5. Derry

    Testing prime focus digiscoping setups

    my printed test chart (new one) is not as good on the line edges as the last one,, I'm still using the same paper,, Jules, the lines I could see on the 20-25-30m photos are what I can count on my HD monitor viewing at 200%, 300% started distorting them,, I sent David (dahyon) one of my...
  6. Derry

    Testing prime focus digiscoping setups

    new chart looks good and agree we need to fill the frame and go with that reading,, I have posted my findings below at 20,25 & 30m,, at 200% on the original the finest line I can see clearly is.. 20m = 16/17 on the angles and 16 on the hortizontal 25m = 15 on the angles and 14 on the...
  7. Derry

    Testing prime focus digiscoping setups

    Paul you shot that feather from five feet so that is not a valid test,,:t: Jules, I also did the test at the 20/25/30 and will be posting them today,, working on some of the granddaughters birthday party at present, you know about those priorities,, scope test work falls to the rear of the...
  8. Derry

    Testing prime focus digiscoping setups

    agree Jules,, if it is sunny here tomorrow I'll try the same distances with and without the 1.4 converter,, Derry
  9. Derry

    Testing prime focus digiscoping setups

    did two test today,, 1. camera - scope,, 2. camera - Olympus TC 1.4 - scope,, upper right corner crop is from the original raw file,, Make and model of DSLR: Olympus E3 Make and model of scope: Televue TV85 Make and model of converter or barlow: Olympus TC1.4 Type, make and model of...
  10. Derry

    Testing prime focus digiscoping setups

    Dave, some interesting read here,, not much on math these days and age but will re-read a couple times and try to figure out your data,, Derry
  11. Derry

    Testing prime focus digiscoping setups

    just posted this on the other thread,, think we are going to have to draw the line in the sand somewhere and go with what we have,, just reading an article on how much AA filtering Olympus does compared to other brands which has negative impact on resolution,, you just mentioned the Oly E420...
  12. Derry

    Testing prime focus digiscoping setups

    Mike, one advantage my E3 may have is using live view which I can zoom in to 10X for fine focusing which is very critical,, I'm thinking about a finer focus control for the scope as at 10x on live view a slight amount of presure makes a big difference with such a shallow dof,, it does not even...
  13. Derry

    Testing prime focus digiscoping setups

    Jules, your doing a great job and I believe we all agree on the set up,, just another test chart to look at that we were not aware of,, so we shot it and found the good and the bad,, my only thoughts are you guys with the high price spread (printers) and me trying to work a four year old HP...
  14. Derry

    Testing prime focus digiscoping setups

    Mike, yes the Q is a Questar,, this is my second one,, also had a 12.5" f5 Portaball when we lived in Florida,, very interesting scope and what resolving power with those Zambuto mirrors,, could see the central star in M57 (Ring Nebula) on a good cold night,, will be interesting to mount the...
  15. Derry

    Testing prime focus digiscoping setups

    Mike, know about Dawes limit,, my 3.5 Q has exceeded it several times in past years splitting doubles on a good night,, there has been some bright sunny days that the Q can resolve more detail than my TV85,, was looking at a small hex head nut on a power transformer about 1/4 mile away,, could...
  16. Derry

    Testing prime focus digiscoping setups

    tried the Korean test chart,, did two photos as wanted to see if the resolution was better in the center of the scope, see center photo,, use the 10X on live view on the camera for final focus,, line readings on my original photos,, have 24" HD monitor,, full test chart photo I can read to...
  17. Derry

    Testing prime focus digiscoping setups

    Mike, great read on that web page on testing lens,, is that your AP Starfire add on Astromart,, LOL how do we know what our HP inkjet printer is able to print at for selecting the correct chart,,?? Derry
  18. Derry

    Testing prime focus digiscoping setups

    Jules, printed the chart out at 300 dpi and can see the lines out to the 20 even on the low grade letter paper I have,, you can see the texture in the first two photos below,, chart looks fine,, took a couple macros with my P5000 for display,, the last one is through my 10X loupe of the...
  19. Derry

    Testing prime focus digiscoping setups

    was just looking (10X loupe) at my test chart printed on glossy photographic paper and the smallest resolution is in the 17 line area,, can see some in the 18 but after that the lines are really blending,, Allan, I printed the test chart out on legal (8.5 X 14") letter quality paper and the 20...
  20. Derry

    Testing prime focus digiscoping setups

    when we use the spacer to allow focus and the shorter distance should that be figured into the over-all mm length of the scope,,?? I just used the scopes mm fl and the camera crop factor,, still in prime focus though,, Derry
  21. Derry

    Testing prime focus digiscoping setups

    fine clear day today for my test,, can sure see the need for a macro focuser on the scope doing this,, used live view at 10X and even the slightest touch on the focuser was wild,, found the best of the photos taken,, can see higher line count on the original than on the reduced ones posted...
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