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Steenamaroo

Members
  • Content Count

    63
  • Joined

  • Last visited

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23 Excellent

About Steenamaroo

  • Rank
    Nebula

Contact Methods

  • Website URL
    steenaudio.com

Profile Information

  • Gender
    Male
  • Interests
    Music, Guinness...
  • Location
    UK/N.I.
  1. Hey all. I finally got another opportunity to get a proper test done and everything went really well. Here's the calibration plot. All this 'practice' meant that set up only took about 15-20 minutes, so that's great. I figured I'd take some shots of M42 and see what I could get. Didn't invest a huge amount of time as it was a first trial but I'm damn pleased with what I got! Thanks once again to everyone who offered advice and help here. (and yes...take flats next time)
  2. I've only had one opportunity to test and that was it, but I was able to calibrate and produce similar results three or four times in a row. This week has been wall to wall cloud, unfortunately, but next chance I get will be confirmation night (I'll report back) and then after that maybe I'll take a photo of something.
  3. Impossible to say what will happen in 50 to 100 years but there's hardly a digital data, or analog a/v, format from the past that can't be accessed by someone, somewhere. Enthusiasts keep old computer platforms alive and there are always public services for the restoration/recovery/backup of obsolete a/v formats. Your job, everyone here, is to have at least two copies of everything! That big hard drive you keep all your stuff on is great until it breaks, and they don't always need a reason to break. Spinning media (physical disc) is a lot more volatile than SSD, particularly where movement, shock, changes in temperature, etc, are concerned, but anything can break without obvious reason. Cost used to be an issue but you could get multiple terrabytes of storage now for not a lot of money. For extra protection, and some amount of convenience, you can get a NAS and regularly update it with important data. That could be your shoebox.
  4. My apologies - I totally over looked the eyepiece in your setup. Please ignore my totally useless replies.
  5. Ha, I just realised and was editing. Sorry about that.
  6. Must be some mix up there - The attached image is 200x200px. Edit: Oh, you mean Mars is 8px wide. 200x200px is very small for a final image. I guess that's a pretty heavy crop but, still, that doesn't make Mars any bigger. Bolting your DSLR straight to the scope is called prime focus. I'm sure someone could do fancy maths but let's, for arguments sake, say that's like looking through a 25mm eyepiece. You probably want something more like looking through a 10mm or 4mm, for example, so you'll want to use a barlow, eyepiece projection, or a longer focal length scope, or some combination of the above. I don't have a lot of experience but I did recently grab an eyepiece projection adapter and give it a quick test run on Mars. Can't remember which eyepiece I used for this - It was just for testing and getting to know the gear, but I guess this is closer to what you'd imagined?
  7. Thanks @alacant Certainly up for further improvement, although I'm very happy now, but I don't see either of those options. Are they PHD2 settings, rather than KStars/Ekos? I did take your initial suggestions about more calibration iterations and shorter pulses but things seemed to get worse. As I say there, out of curiosity, I went the other way with longer pulses to see what would happen and things started looking much better. I'm not sure if number of iterations made a big difference but certainly longer pulses was a key to getting a decent-ish looking plot and much better guiding, so thank you, either way, for pointing me in that direction.
  8. Bit of progress this evening...! For some reason binning 1x1 works much better 2x2 and always has so I stuck with that. Decreasing calibration pulse duration seemed to make things worse so, to experiment, I increased it. That seemed to really help the shape of the guiding plot, so I kept increasing/testing/increasing testing. Under advice from @Danield06 I went with 2.5 exposure, multistar algorithm, and auto-star. Seems like a solid combination. Once it was running well I thought I'd subtly tweak some values to see if I could improve it further and found that increasing proportional gain to 166 did just that. In the end I had under 0.5 total RMS for about 5 minutes so I'm very happy with that. Many thanks to everyone who has offered advice, or encouragement!
  9. Update : Seems goto speed is, indeed, set at firmware level. Seller sent me a service version of the kit settings app which allows the setting of max goto-speed. Default was 1000X. I reduced that and restarted and the issue seems to be resolved.
  10. Not sure if I'm on to something or not but I notice that goto moves in both axis at the same time. If I attempt to move in both axis at the same time using the pictured motion control panel, or the seller-recommend synscan phone app, it does not work at 6/7/800X. Attempts to move N/E, for example, just move N. Attempting S/E just goes S. It seems like the E/W movement is attempted, at first, but just stops after a second, while the N/S movement continues. I've passed this onto the seller/manufacturer too, incase it's relevant.
  11. You're quite right, particularly when it comes to things like tightening/loosing. How tight? How loose? That's much easier to gauge when you can feel it or, at least, see someone else do it. I appreciate your advice and patience. My indi motion tab is slightly different to yours (pictured) but please be assured, as much as this guiding saga is doing its best to make me look like an idiot, I'm familiar with the speed controls. I had previously been setting 'custom' to 300 or so as a nice balance for use when polar aligning and that worked as you'd expect. The max speed, set explicitly or via 'custom' is 800X, and slewing at 800X or less is perfectly fine. The issue is that when using 'goto' on a target the mount takes off not just at the highest list speed, but higher! Investigating it for a while I think I'm right in saying the stepper motors struggle and skip the most when both axis are rotating together which, I notice, I cannot even do manually at the highest user-speeds (6/7/800) using the pictured motion control panel or synscan app. Pressing and holding the NE/NW/SE/SW just results in travel on one axis - N, or S. Speaking of synscan app, I tested goto from there, while I had it open, and noticed that it also runs goto at these same higher speeds so that's making me think it's a firmware level thing? The seller/manufacturer suggests loosing the worms slightly to make things easier on the motors but I took a bit of time last night to make sure it was a loose as could be without introducing noticeable backlash. I think, perhaps, a video of me operating the worm shaft by hand, with motors removed, might be a good idea. Sorry folks, I know this deviates from the original post and issue - Hope that's OK.
  12. Ugh. Packing up for the night. Can't believe I've fanally made some progress with guiding (not quite enough to guide) only to find that goto isn't an option. This is really starting to turn into a chore rather than a hobby. With the motors removed I can turn the large pulleys with my little finger, and the motor skipping issue even happens with clutches disengaged so it seems clear the motors are just weak. I sent an email to the manufacturer asking about the weak/high speed goto but unless he points me to a magic 'increase torque' button, I can't see much coming from that.
  13. Negative. My kit's max speed is 800 (and works well) but goto always tries to operate much faster than that, no matter what I set in indi control panel.
  14. I'll give that a go. Unfortunately I wasted most of the night thinking something was too tight or binding only to find out that ekos go-to speed is, apparently, not adjustable, and wants to go way faster than my motors can handle. Slewing anywhere at any (supported) speed is tip top, but go-to is a waste of time as it tries to go at 1000X, or whatever, and the motors just can't do it. I'll be back.
  15. Guide plot is looking very different after tonight's tear-down and clean. Can't say guiding is any better but it certainly looks like progress.
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