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Nomis

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Everything posted by Nomis

  1. Mathew - not a criticism but the best thing you could do is to buy a mono ccd/webcam for imaging in Ha ! The thing to remember is that you are imaging in narrow band not full width and Ha is only in the red part of the spectrum... what this means is that by using a camera that has a bayers matrix (RGB filter grid on top of the chip which makes images colour) you are in effect reducing the resolution of the image by two thirds which is why it seems washed out. This is because the pixels that are covered with either a green or a blue filter aren't letting any of the Ha bandwidth through but only residual light outside of the Ha bandwidth that isn't removed by the blocking filter in the SM60 ! Nice first image none the less and hope that helps ! S.
  2. Great first light ! A quick Despeckle then a sharpen (I use Focus Magic but Smart Sharpen in PS will work equally as well) will pull out a bit more detail !! S.
  3. Sorry for the delayed thanks !! Your comments are all much appreciated S.
  4. Well, I managed for once to be in the right place at the right time to capture todays solar eruption. Quite difficult to process but pretty happy with the result. 3 pane surface mosaic taken with PST-B90, DMK41 with x2.5 powermate on EQ6 S.
  5. Ken is right... the only way to do it is if you can fill the frame with the sun (i.e. no black bits). If you can then move the camera to the center of the solar disc (away from any large surface details like active region etc) then don't de-tune as Ken says but fully de-focus until you lose all the surface detail and are just left with a grey "flat" image. In mine I can usually see Newtons rings, the sweet spot and any orthogonal miss-alignment and of course all those dust bunnies. Then take around 500 frames (remember they need to be taken at exactly the same ICCapture settings as you used to take the original images !)... stack all frames in registax and don't apply any wavelets (but you will still need to click "Do All") then save out as a .png (don't save it as a .tif as registax will only use .png or .bit !) You can then load this into registax as a Flatfield (via the Flat/Dark/Reference menu option). As normal the flatfield will then be removed from each frame during the stacking process. You could also make "false flats" by copying the layer then doing a gaussian blur then inverting then subtracting but I found the de-focus method was the only way to get rid of 100% of the dust bunnies ! HTH's S.
  6. Haven't posted any images on here for a while so thought I'd fire in my selection from yesterday (3rd July 2011). All taken around 09:00 UT with PST-B90 using DMK41 @ f/25 thru x2.5 powermate on EQ6. Cheers. S.
  7. Nice image Billy ! I use flats to stack in Registax (or Avistack for that matter) which always work for me. After you've finished your imaging run and making sure not to change any of the camera settings move the FOV so it is totally full of solar disk but try and miss any AR's... then totally defocus the setup till all the surface detail is gone (the newtons rings, dust bunnies, vignetting etc will all still be visible).... take an .avi of about 500 frames. Then, before stacking your actual image .avi's, stack the Flat using all frames (just select any region as the reference frame). Save the flat as a .png then in Registax go to Flat/Dark/Reference in the menu bar and load the flat you've just created. Now just process your "lights" as you normally would and the flat will be removed from each frame prior to stacking ! Sorry if this is granny sucking eggs but may be useful to others..... S.
  8. You shouldn't be too unhappy with those ! The first thing to say is that they look over exposed. Try and pull them back a bit. If you have a histogram aim to have the peak two thirds of the way up. The second thing to say i that four minute .avi is way too long. You should look to get between 500/800 frames (stacking around 200/250 of the best) and try not to image over a minute. The suns surface is really quite active and can change quite a bit in four minutes creating a bluuring effect on ones images. I know it's frustrating to hear (at least I was when it was first said to me) but it is just a case of practice, practice, practice and you'll get there in the end ! S.
  9. Thanks Ken & Pete. Ken - not tried that either but will give it a go now. S.
  10. Mine's 8mm too - purchased two weeks ago ! The spec did change from a C-ERF to a D-ERF which may be the difference !?! S.
  11. Thought I'd take advantage of the fact that I've had over a weeks worth of clear(ish) skies to pull together an animation of the transit of AR11082 across the solar disk. Sadly (which seems to happen with all my animations) I missed two days near the begining due to two days being clouded out but still looks OK. Main lesson for next time is to try and get the PST etalon sweetspot on the same place to try and get a more even surface but still pretty happy. Thanks for looking. S.
  12. Managed to get in just under an hours worth of clear skies this afternoon to collect enough frames of what turned out to be a rather active prom on the western limb to create an animation. Annoyingly the cloud rolled in to spoil my fun plus a rather large cloud got in the way leaving a gap of 15mins towards the end hence why it jumps - sorry ! NB: Don't miss the little shooting prom north of the main event. S.
  13. Managed to capture some images of a nice filiprom on the northern limb plus AR11073, 74 and 75 which are developing nicely. PST using DMK41 @f/10 for full disk and f/25 for close-ups. Thanks or looking and comments welcomed ! S.
  14. Great image Pete - had the same problem here but did managed to capture the filiprom on the northern limb ! S.
  15. Good to get back imaging again after a three week forced break. Skies were rather milky so sadly not the best of conditions. As can be seen the "seagull" filament(s) holds pride of place on the disk with a nice large prom on the western rim plus various other lesser proms dotted here and there around the disk. A small cluster of spots is also visible in the lower left, half way out to the rim. They are visible in SOHO but no number assigned yet ! PST on MinEQ pier @f/10 using DMK41. S.
  16. Paul - have you imaged with just the PST/ MS LifecamHD setup (before you modded it) ? The reason I ask is that because I had to remove the extention adapter of the EP BF to get my DMK to come to focus because the prism didn't provide enough in-focus ?! S.
  17. Cheers Russ Yeah, I saw the thread but as you can see I couldn't see any spots. Having said that it was only through my PST (with a de-tuned etalon) so may be visible with larger aperture scope (although it's still not showing in SOHO) ?! S.
  18. Had a nice imaging run today with lovely blue skies... The active region is looking quite well formed now but still no sign of any spots. PST on MinEQ Pier with DMK41 @ f/10 out of attic window. NB: The white light disk and close up are with de-tuned etalon. Thanks for looking. S.
  19. Many thanks Ken. It's probably worth saying though that I'm only where I am with solar imaging due to the help and advise I've had from you and a few others over the last 12 months so for that I say thanks ! S.
  20. Well, now I've had a bit more time to trawl through all the avi's I captured of the CME on the 13th I've managed to come up with a better version than the original one I posted... I have to say I'm pretty chuffed with this one considering the shocking conditions and I know I shouldn't be disappointed but, oh, if only the skies had been a little bit clearer PST @f/10 on MinEQ Pier out of the attic window S.
  21. Me three... I'm still coming down from the experience. I have to say though it was more by luck than judgment that I managed to catch it and can only imagine how much better the image would have been had the skies been anywhere close to clear ! Simon
  22. Cheers Nick Agreed, fingers and toes are all crossed ! S.
  23. A lot of grey gloop here too Brian but I did just manage to capture it.... 30 mnutes later and it was all over... S.
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