Jump to content

Stargazers Lounge Uses Cookies

Like most websites, SGL uses cookies in order to deliver a secure, personalised service, to provide social media functions and to analyse our traffic. Continued use of SGL indicates your acceptance of our cookie policy.



Advanced Members
  • Content Count

  • Joined

  • Last visited

Everything posted by michael8554

  1. Have you installed the ASCOM driver ? Michael
  2. Should be okay if the arcsecs/pixel is suitable for your imaging scale. Michael
  3. I see now it was your post in January that has been resurrected. So only one Dither in your simulation ? Michael
  4. I was under the impression that you've got PHDMax to work with your Olympus, but seeing your other post on Dithering non-Canon cameras, am I misunderstanding? Michael
  5. Ah, that's a different question, 12 pixels for DSLR's is often mentioned. Michael
  6. And maybe a shot with an extra 2 to 5mm of spacing (if you have one) so we can really see the effect of too much spacing ? Michael
  7. Try short exposures at high ISO so guiding errors don't feature. Same target, something with lots of stars ! There is coma in the second image, no coma corrector. The first image, with corrector, is over corrected, suggests the spacing is too much. Michael
  8. If your guidecam is dithered 1 pixel, the 1arcsec/pixel imaging rig will dither 2.47 pixels, the 2.27 arcsec/pixel rig will dither approx 1 pixel Michael
  9. Here are my test results: First I used the Manual Dither button in PHDMax I set PHD2 to 1.0 in Dither Scale, PHDMax to 1.0 PHD2 was in Spiral mode, which makes whole pixel moves rather than random numbers There was only 1 Dither = 0.00, 1.00 Then I made a series of Auto PHDMax Dithers: PHD2 1.00, PHDMax 1.00, Two Dithers = 1.00, 0.00 and then 0.00, -1.00 PHD2 1.00, PHDMax 4.0, Two Dithers = 0.00, -5.00 and then -5.00, 0.00 PHD2 5.00, PHDMax 0.5, Two Dithers = -2.500, 0.00, and then 0.00, 2.500 PHD2 0.1, PHDMax 4.00, Two Dithers = 0.00, 0.500, and then 0.00, 0.500 You can see the Dithers moving in a spiral pattern. I was hoping that one of the Dithers was using PHD2 setting, the other using PHDMax settings. Then PHD2 could be set to 0.1 and would make a tiny Dither, PHDMax on 4.0 would make a normal Dither. But it seems each Dither is approximately (PHD2 x PHDMax). So you can get your desired Dither, but the two moves and settling time are nearly twice as long as it needs to be. Are you getting two Dithers on your setup ? Tried DitherMaster again, but Canon 6D wasn't on the list of supported cameras in the dropdown menu, so it reported Camera Not Connected. None of the cameras on the menu were DIGIC 5+ which might be the problem, or it just needed a match to the camera reported in EOS Utility. Michael
  10. In my opinion once you get your PA to 5arcmins you are good enough for guiding, so if your "stars are drifting out after 5 minutes" then look to improving mount and guiding. Were stars drifting out in Dec or RA ? Michael
  11. Although cloudy tonight I've managed to refresh my memory of how PHDMax behaves. For PHD2 to Dither from an external source, "Enable Server" has to be selected at the bottom of the Tools menu. When PHDMax sends a Dither, PHD2 Dithers twice !! This can be seen on the real-time guiding graph, the Dithers are close together so the two DITHER letterings are half superimposed. The two Dithers can also been seen in the PHD Guide Logs: 22,66.313,"Mount",-0.477,-0.577,0.475,0.573,0.299,0.249,90,W,75,S,,,72,5.78,0 INFO: SET LOCK POSITION, new lock pos = 384.017, 355.857 INFO: DITHER by 0.000, 0.500, new lock pos = 384.015, 355.357 INFO: SETTLING STATE CHANGE, Settling started 23,69.672,"Mount",0.002,0.500,-0.000,-0.500,-0.000,-0.500,0,,151,N,,,75,5.94,0 24,72.625,"Mount",-0.377,-0.295,0.376,0.292,0.226,0.000,68,W,0,,,,70,5.76,0 INFO: SETTLING STATE CHANGE, Settling failed INFO: SET LOCK POSITION, new lock pos = 384.015, 355.357 INFO: DITHER by 0.500, 0.000, new lock pos = 383.515, 355.359 INFO: SETTLING STATE CHANGE, Settling started This was with PHD2 on Spiral Dither and Scale = 0.1, PHDMax was on 4 pixels. I'm guessing it did a Spiral RA move of 0.5, then a Spiral Dec move of 0.5. A Manual Dither from the Tools/Manual Guide menu only has one command on the graph and in the Logs. I don't know why and I don't know how to stop one of the Dithers. Next time out I'll try and work out which prog is supplying the Dither amounts. Michael
  12. I use PHDMax with PHD2. It has a few quirks that I'm not going to comment on until the clouds go away and I can check my settings ! There's also DitherMaster, but I couldn't get that to work correctly. Michael
  13. That's what I told him when I sold him the camera.......... Michael
  14. Too much data for my tiny brain to process, so what are your conclusions ? Guidescopes in adjustable rings with soft-tipped screws are often considered to be an instant source of flex - remember we're talking microns. Even with a basic ZWO ASI 120M guidecam I've never needed adjustable rings, there's always been suitable stars available. Michael
  15. Nightime Crime is on the increase, and Procurement of Astronomy Equipment is no exception. I'm afraid confiscation is the only cure - I'll PM you my address....... Michael
  16. Ahh, sorry I mistakenly thought you were trying to load a custom tour. Michael
  17. You cannot "add" a Tour (or Comet)... you have to pull all data from the handbox, add the Tours (or Comets) to that in your PC, and then push the *entire* package back out to the Autostar ("Load Scope" in MyScope, "Send" in ASU) (Quote from Weasner's Meade Autostar Feedback). Also I believe there is limited space for Tours, you might have to delete some of the existing tours to make room. Michael
  18. You are quite right to recalibrate if moving to a different part of the sky. But while you are trying to sort your guiding, stay in one location, near the meridian and celestial horizon, and starting testing with the default settings. Improve your focus using the readings in the Star Profile display.. Michael
  19. Hi ZiHao First, there are 33 items in the Log, why so many very short guiding sequences ? Most of them are too short to give you any idea of the guiding quality. There are 8 Calibrations in the log, why so many, you only need to do one. The steps are widely different in them, are you changing the step size ? Are you allowing PHD2 to auto select a suitable star, or are you choosing the guide star ? You could reduce exposure to 2 seconds which will give faster responses to the guiding errors. HFD of the guide star is high, sometimes 6, that may be due to Saturation, or bad focus, aim for HFD of 3 to 4. I would start again with a new Equipment Profile to get back to default settings, then follow almcl's suggestions, then guide for about 10 minutes without changing settings, and post the log. Finally the logs are full of "Unknown" messages because you are ST-4 guiding - if you change to an ASCOM connection then PHD2 will be able to monitor the mount's settings. Michael
  20. I would increase the Flats exposure so that the corners aren't so close to black level. (Not sure, but that may be what vlaiv is saying.........) Michael
  21. Carpoint 150Watt 12V DC to 240V AC Converter / Inverter £9.00 Has Output Short-Circuit Protection, Alarm, and Auto Shutdown Output Isolated 50Hz On / Off Switch £9.00 plus £2.95 Royal Mail Delivery Michael
  22. Even simpler, buy some "cheeseblock" - a row of tubular connectors with screwdown clamps, plastic insulated. You cut the plastic between each connector to give single connectors. Stagger the cable cut slightly so that the connectors aren't adjacent, then cover with insulating tape. That way the "bulge" isn't so fat. Michael
  23. Is your mount on the list of compatible mount, I don't see it listed ? Michael
  24. If the camera's ASCOM driver is basic then it doesn't supply any info to the camera controls so it is greyed out. So the only control is exposure. And yes you have to press the Loop button. Michael
  25. Fitting RCA plugs and sockets will involve soldering, so instead just solder the cut ends in the middle of the cable together and cover with heat-shrink. Michael
  • Create New...

Important Information

By using this site, you agree to our Terms of Use.