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  1. Sticky Thread Sticky: Calculating Magnification of Telescope from Eyepiece and Focal Length

    Started by admin, 12-04-2008 10:41 PM
    5 Pages
    1 2 3 ... 5
    • Replies: 45
    • Views: 42,509
    Last Post: 04-18-2015 02:09 PM
    by BobDob  Go to last post
  2. Short Focal Length and Barlows

    Started by sneeds, 10-20-2010 08:22 AM
    barlows, focal, length, short
    • Replies: 4
    • Views: 1,544
    Last Post: 02-13-2015 10:34 PM
    by KathyNS  Go to last post
  3. Calculating focal length equivalent with Webcam

    Started by Emu, 12-02-2009 11:09 AM
    2 Pages
    1 2
    • Replies: 17
    • Views: 6,204
    Last Post: 03-04-2014 04:43 PM
    by AustinPSD  Go to last post
  4. CCD Calculator

    Started by MLaferriere, 06-03-2013 02:59 AM
    aperture, calculator, ccd, graphic, length
    • Replies: 6
    • Views: 1,086
    Last Post: 06-03-2013 01:54 PM
    by dcrowson  Go to last post
  5. Goodwill lenses

    Started by DAVIDAMONETT, 01-14-2013 05:28 AM
    • Replies: 4
    • Views: 817
    Last Post: 01-14-2013 03:28 PM
    by mrlovt  Go to last post
    • Replies: 12
    • Views: 1,539
    Last Post: 07-15-2011 02:34 PM
    by Vali x  Go to last post
  6. USB webcam cable length

    Started by Jo, 06-14-2004 08:06 PM
    2 Pages
    1 2
    cable, length, usb, webcam
    • Replies: 11
    • Views: 6,219
    Last Post: 07-12-2011 07:12 PM
    by VincentMcKenzie  Go to last post
  7. 1000mm focal length at F6.6 v 750mm/F5?

    Started by TimH, 06-10-2011 05:33 AM
    2 Pages
    1 2
    1000mm, 750mm or f5, f66, focal, length
    • Replies: 16
    • Views: 2,506
    Last Post: 06-13-2011 04:09 AM
    by sxinias  Go to last post
  8. Cable Length Limits for Remote Telescope Operation

    Started by SkyNerd, 05-24-2011 10:58 PM
    cable, cable limit, celestron cpc, length, limits, nexremote, operation, remote, telescope, usb cable
    • Replies: 7
    • Views: 1,655
    Last Post: 05-25-2011 09:46 AM
    by admin  Go to last post
    • Replies: 5
    • Views: 1,457
    Last Post: 05-18-2011 05:13 PM
    by j.gardavsky  Go to last post
  9. Orion StarShoot IV - Focal Length

    Started by jstrong611, 05-10-2011 11:11 AM
    focal, length, orion, starshoot
    • Replies: 3
    • Views: 1,790
    Last Post: 05-15-2011 06:22 PM
    by AlanP  Go to last post
  10. need help with focus length

    Started by bigbear, 03-17-2011 01:42 AM
    focus, length
    • Replies: 7
    • Views: 716
    Last Post: 03-19-2011 05:53 AM
    by bigbear  Go to last post
  11. Choosing you focal length

    Started by Rottweiler, 02-22-2011 12:37 PM
    choosing, focal, length
    • Replies: 2
    • Views: 821
    Last Post: 02-28-2011 07:43 PM
    by DAVEG  Go to last post
  12. Recommended length of video?

    Started by Locutus65, 11-20-2010 04:59 AM
    2 Pages
    1 2
    length, recommended, video
    • Replies: 10
    • Views: 1,883
    Last Post: 02-08-2011 05:16 AM
    by ScubaDude  Go to last post
  13. Focal Length of a Reflector Telescope?

    Started by ywmui, 06-07-2008 09:15 PM
    focal, length, reflector, telescope
    • Replies: 8
    • Views: 9,960
    Last Post: 01-25-2011 03:00 PM
    by DaveW  Go to last post
    • Replies: 0
    • Views: 901
    Last Post: 01-21-2011 06:05 PM
    by TwinStar  Go to last post
  14. Focal Length Calculator - Theory, Formula, Spreadsheet

    Started by conandrum, 12-31-2010 12:49 PM
    3 Pages
    1 2 3
    calculator, focal, formula, length, spreadsheet, theory
    • Replies: 27
    • Views: 4,149
    Last Post: 01-04-2011 09:42 AM
    by conandrum  Go to last post
  15. Best size eyepieces for Orion Xt6 1200mm

    Started by Marshifty, 12-18-2010 04:10 AM
    1200mm, eyepiece, eyepieces, focal, length, orion, size, xt6
    • Replies: 6
    • Views: 4,537
    Last Post: 12-21-2010 10:05 PM
    by Marshifty  Go to last post
  16. Eyepiece focal length

    Started by greg1234, 09-21-2010 12:19 PM
    eyepiece, focal, length
    • Replies: 5
    • Views: 1,484
    Last Post: 09-22-2010 08:05 AM
    by Dublin sky watch  Go to last post
  17. Increasing Synscan Cable Length

    Started by blaise, 07-27-2010 10:35 PM
    cable, increasing, length, synscan
    • Replies: 7
    • Views: 2,926
    Last Post: 08-04-2010 10:57 PM
    by blaise  Go to last post
  18. Ideal focuser length

    Started by francois, 07-15-2010 08:36 PM
    focuser, ideal, length
    • Replies: 6
    • Views: 1,077
    Last Post: 07-16-2010 02:41 PM
    by AustinPSD  Go to last post
  19. OTA length calculation re focuser position

    Started by alligood, 06-24-2010 04:24 AM
    calculation, focuser, length, ota, position
    • Replies: 1
    • Views: 1,039
    Last Post: 06-24-2010 04:30 AM
    by asrrin29  Go to last post
  20. Longest useful focal length for a C8

    Started by redjmp, 06-03-2010 08:08 PM
    focal, length, longest
    • Replies: 3
    • Views: 1,049
    Last Post: 06-04-2010 03:27 PM
    by Bob327  Go to last post
  21. Focal Length and Focal Ratio

    Started by grayhawk, 05-20-2010 11:15 PM
    focal, length, ratio
    • Replies: 4
    • Views: 1,847
    Last Post: 05-22-2010 12:22 AM
    by grayhawk  Go to last post
  22. Focal length

    Started by stufft, 05-09-2010 09:34 PM
    2 Pages
    1 2
    • Replies: 10
    • Views: 1,672
    Last Post: 05-11-2010 06:19 PM
    by stufft  Go to last post
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