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Owmuchonomy

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Everything posted by Owmuchonomy

  1. Owmuchonomy
    No, the corners are not flat on a big sensor. Probably OK on smaller sensors. Now, my 60mm macro is as flat as a pancake.
  2. Owmuchonomy
    As above. I have the 300 f4 L. At f4 focusing is extremely tricky. Compared to my frac at f5.59 then the field is not flat either on my crop sensor.
  3. Owmuchonomy
    I feel for you Gnomus. I have virtually the same issue with my refractor which it is claimed produces a flat field even on a full frame sensor and it has at last been picked up by the supplier after me sending very similar corner crops and other data. My findings point to (and my gut feeling is that) the likelihood the collimation is slightly out as Olly says above. However, mine was almost a third of the price of yours. I wish you good luck and I will follow your plight.
  4. Owmuchonomy
    Have you consulted this thread? On the second page Ian posts an excellent diagram of the consequences of incorrect spacing. http://stargazerslounge.com/topic/225831-flattener-spacing/page-2
  5. Owmuchonomy
    Yes, the GTX site has the info. I also did the trial but I can't remember if I added GTX at that point or after the purchase.
  6. Owmuchonomy
    Another possibility is that the trial version has limited functionality of course.
  7. Owmuchonomy
    Hi Peter, GTX and various other plug ins work fine on my PS CC but I am running on Mac and so have the Mac versions downloaded. Is it a win problem maybe? I can go and find out how I did it if you wish?
  8. Owmuchonomy

    Just started a new course. Astronomy: Exploring time and space. Uni of Arizona

  9. Owmuchonomy
    Ditto.
  10. Owmuchonomy
    The simple way I got my head around this was to take a normal image, I used my M42, put it into Photoshop and choose LAB mode. Then if you look at each channel in this mode it is possible to see how much information is contained in the luminance channel compared with the others, most of it to be honest. An expert imager may come along soon and explain it.
  11. Owmuchonomy
    Read Mike's excellent post, then read it again. Most stuff is in LEO and what isn't is moving much slower (or apparently not at all) relative to our vista. I see such events sometimes here. It's the Army playing in their Apaches.
  12. Owmuchonomy
    Hi Alistair, here is a bit of info in my thread: http://stargazerslounge.com/topic/224854-heq5-pro-worm-drive-bearings/?hl=worm+bearings#entry2428931
  13. Owmuchonomy
    Thank you very much. Follows up the Planetary Nebula post very nicely.
  14. Owmuchonomy

    Passed my Coursera Intro to Astronomy course with 87.6%. Very enjoyable.

  15. Owmuchonomy
    Hi Gary, I'm not much of an expert in guiding to be honest, although i do manage it with PHD2 but my guiding pixel scale is 5.15"/px.
  16. Owmuchonomy
    The thing that stands out to me from your thread is the FL of your guide scope. 800mm is longer than most imaging scopes. Mine is 328mm and that is consider long for guiding. I'm not familiar with the camera type you describe. Are you using PHD 1 or 2 as 2 automatically steps the gain up and down until a suitable star is selected.
  17. Owmuchonomy

    Started fitting out new obsy. Drift align tonight hopefully.

  18. Owmuchonomy

    Waiting for better weather and to finalise obsy plans so ordered Rowan belt mod.

  19. Owmuchonomy

    Pier base is poured and bolts are in. Finalise obey plans next week.

  20. Owmuchonomy
    As Merlin says and make sure as much backlash is adjusted out of your mount as possible. I find I have to change my Dec imbalance depending which side of the meridian I'm pointing which fits the targets you mention. Sent from my iPhone using Tapatalk
  21. Owmuchonomy
    A very comprehensive report. Does this version of the 9.25" OTA have a mirror lock?
  22. Owmuchonomy

    Replacement flattener but still eggs for breakfast! Can't get to the bottom of it.

  23. Owmuchonomy
    I am fairly new to the forum this year. I find this article absorbing, stimulating and beautifully illustrated. Thank you for taking the time to put it together.
  24. Owmuchonomy

    Duplicate flattener has arrived and so have the clouds.

  25. Owmuchonomy

    UK distributor agreed today to send me another flattener so hopefully no more eggs for breakfast.

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