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About Mognet

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  1. Mognet

    3D Printed Camera Bracket

    Thanks. I've got a clear night here so I'm going to give it a proper test I have other astro print ideas in progress. One is a rework of the lens shield, and there maybe an EQ mount at some point too
  2. Mognet

    3D Printed Camera Bracket

    Back in January I created a 3D Printed Camera Bracket for a Gorilla Pod Mount that was limited to a particular mount bracket and only one orientation. It wasn't too bad, but I thought it could be improved upon. So I've come up with the mk2 version, which dispenses with the need for a specific mount bracket and instead grips the lens, a bit like a tube ring, but can also be used with different sized lenses. I've come up with this for the new version. The former yoga mat foam padding is there to both grip and protect the lens. I had to cut it to half the depth as it was just a little too thick. The whole thing is a six part print and breaks down like this It grips my camera and the heaviest lens with no problems, although in practice I'll probably wrap the strap around the mount so it doesn't hit the floor if it comes apart! All the files for generation and printing are attached in the zip file. I used the latest development snapshot of OpenSCad for creation. My lenses range in diameter from 60 to 75mm. If you want to print your own then change the variables tubeMinimumDiameter and tubeMaximumDiameter for your lens sizes, and maybe also be a little more generous with the diameters by 5 or 10 mm to allow for the foam padding. The stemLength variable can also be changed to cater for larger cameras. I printed the dovetail/stem section and matching bolt with a 2mm wall and 25% infill to be strong enough, and the rest at the default 0.8mm wall with 10% infill for the V sections and their bolts. The daytime testing I've done shows that there is some flexing around the base and bottom V. I might have to redesign that part so it becomes and all in one print. We shall see how it goes once in proper use. Camera Bracket v2.0.zip
  3. Mognet

    More Moon nonsense

    I'm waiting for a Button Moon
  4. Mognet

    Star gazing locations in Essex

    I sometimes go up to the car park for the Dengie Nature Reserve near Bradwell. It's dark apart from the lights of Mersea, Jaywick and Clacton on the horizon. A few other astronomers get up there too, with little disturbance from anyone else
  5. Mognet

    Ireland over the summer.

    I'll give a +1 for Brú na Bóinne complex. I've only been to Newgrange itself, but there are a couple of other barrows that you can get to from the visitor centre. Access to them is via a short bus ride from the visitor centre, which unreliable memory says is about an hours drive from Dublin The Irish Astronomical Society host star parties and sidewalk astronomy events around Dublin. Nothing currently listed beyond the end of May, so check nearer the time There are plenty of other things to do too. The Book of Kells, an early illuminated manuscript kept at Trinity College may be worth a visit; there are tours of the Jameson Whiskey Distillery and the Guiness Brewery if you are old enough to drink (minimum age there is 18); plenty of museums; and there is a thriving night life and live music scene. Driving is easy. The Irish are not aggressive drivers, and the roads are not hugely busy. Just remember that they drive on the left, and as they use metric measurements, so all distances and speeds are in kilometres. The main road system is quite good too. Some of the back roads out in the countryside get 'interesting' though! Paul's comment about the weather is accurate and you will find that you'll probably need a lightweight waterproof coat. My half Irish girlfriend had warned me before our first visit that Ireland really only has too seasons; the wet season, when it rains all the time, and the dry season, when it doesn't rain all the time!
  6. With your 200p being a goto I wouldn't have thought the initial direction would have mattered. I have a mak 127 with the SynScan goto mount, which I assume works the same as yours, and I usually start off alignment by pointing it in the general direction of the first star. What I find is vital is getting the mount levelled properly before doing anything, and I get better results from using a short spirit level instead of the built in one. Looking at the image on FLO I can't see if yours has a built in level or not.
  7. My girlfriend said she saw eight in a twenty minute period around 3:30 Wednesday morning. I've been out several times since and haven't seen any
  8. It's more a case that stacking software aligns on stars rather than just aligns the stars. As stars, nebulae and galaxies are all positioned relative to each other, even if the field of view moves from image to image, the alignment will improve the signal to noise ratio making it easier to bring out the faint fuzzies captured in the images. The stacking programs I've played with certainly seem to work this way, and it's the way I had intended to write one too. The only exception may be AutoStakkert, which is great for lunar and planetary images. That one seems to do something different for alignment.
  9. I didn't get round to sending him an email last night, but it looks like that part is out of his control
  10. It seems to handle pincushion distortion ok when the option is turned on. I don't appear to have any files with chromatic aberration to see what happens there. Sequator uses libraw rather than dcraw, which DSS uses, so that could be the source. Their site doesn't say either way if aberration can be fixed I did get it to crash when trying to use a master flat .tif from DSS. Seems happy using the raw files that were used to compile that though. Just costs a bit of extra time in processing Looks like the only way to submit bug reports, etc is to email the developer directly. I'll drop him an email with the bug report and ask about chromatic aberration when I do
  11. Downloaded a copy of Sequator last night to play with. It does seem quicker and easier to use than DSS. Now playing with the various options as I think I'll be using this in the future. Comparing with my DSS processed image from this post it's come up with something more natural looking, and has even dealt with the light pollution/haze that the original had. All that was needed was some tinkering with the levels in Gimp (v2.10 rc1 as it handles the bit depth properly)
  12. Mognet

    Stargazing live 2018 - is it happening

    Last year they had a local perspective from Greg Quicke (aka Space Gandalf), who I thought was great, and much better than Brian and Dara. If it gets shown over here I hope he's on it again
  13. Mognet


    From a chart given in one of the comments, the closest part of the orbit takes it over northern Spain. I doubt we'd even get to see much, if any, of the re-entry if it happened in that part of the orbit. I'm sure it would be a spectacular sight if we could though!
  14. Mognet


    Viewing an object depends on a lot of factors. The limiting magnitude is usually for ideal conditions. For DSOs the apparent magnitude doesn't always mean that the object is visible as it's the measure of the total light from the object. There's more about it here
  15. Mognet


    I prefer the second one. The black around the background stars towards the edges is less harsh. They're both good. I'd be very happy if I could get anywhere near this quality in an image

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