Jump to content

MarkAR

Members
 View Profile  See their activity

  • Posts

    3,000

  • Joined

  • Last visited

 Content Type 

Everything posted by MarkAR

  1. MarkAR
    Very well done, super image.
  2. MarkAR
    Nice report. 1. No idea 2. Go for it As a note, I ran your set up through a tool calculator and you are sampling at 0.16 "/px. Apparently that is well oversampled and supposed to be a no no.
  3. MarkAR
    The Evostar is a doublet so you will need the 0.85 reducer for photography. That will give it a pretty good FOV for nebulae and larger galaxies. The 200P-ds would need the coma corrector and will have a good focal length for galaxies and small nebulae.
  4. MarkAR
    Wow, the outer rosette is really starting to show. That is superb.
  5. MarkAR
    That is one hell of an improvement. Well done.
  6. MarkAR
    Yes and depends on how good your tracking is now.
  7. MarkAR
    Lovely rendition. Great detail and colour.
  8. MarkAR
    Could be handy for clubs and astronomy field trips.
  9. MarkAR
    Not sure if binning would help, 2x2 would push you to the realms of under sampling. A 1.5x barlow or powermate would get you "closer" and still be in the ok sampling range.
  10. MarkAR
    I think you'll have more control stacking in DSS. Also just checked your FOV on astronomy.tools and it looks like you've cropped quite a bit to concentrate on the galaxy. That's always very tempting but means you can accentuate any fuzzy detail and background noise. Try a DSS stack and only crop any outlying borders.
  11. MarkAR
    Well done. Maybe you need to insert part E between them ?
  12. MarkAR
    Post processing can be a minefield, I'm only really making a start myself using a trial period of Pixinsight. It's a case of numerous small tweaks rather than aggressive whacks. BTW, what scope/ camera/ reducer etc were you using?
  13. MarkAR
    He needs weights not the bar hence the big lumps.
  14. MarkAR
    It's is scary, recently made up a couple of extra long c/w bars for Star Adventurers, watching the 6mm tap twist as you get to the bottom is a sweat inducing moment.
  15. MarkAR
    Looks pretty good. Not sure what's causing the fuzziness, initial thought was focus or too short exposure time. Could also be sampling rate of you camera/scope set up.
  16. MarkAR
    Nice one, shame it ruined one of my subs from last night. Looked like the Death Star cruising past.
  17. MarkAR
    Don't use a 5mm, you need 8mm minimum. I suggest 10mm. To do the threaded side holes will take a long reach tap, even if you counter bore the hole the risk of breaking a tap in stainless is high. The suggested drill for 10mm is 8.5mm and clearance is 10.2mm. Use a good high pressure tapping fluid.
  18. MarkAR
    Looks great, well done.
  19. MarkAR
    That will be harder than you think, over heat the stainless and it'll work harden and burn out your drill bits.
  20. MarkAR
    Huge improvement, well done.
  21. MarkAR
    No need for paint on that stuff.
  22. MarkAR
    It could also be balance issues affecting tracking.
  23. MarkAR
    If you feel they are dust free and both sets very close to the same focus then go ahead. Keep the originals in separate files just in case there are issues and you have to do them separately.
  24. MarkAR
    Decent price I would say, locking bolt holes would be a massive benefit but will up the price plus the knobs. That's a set of big weights.
  25. MarkAR
    That was a year well spent, superb image.
×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue. By using this site, you agree to our Terms of Use.