wulfrun

@Stu ,I think the fact that you noticed and then took the trouble to take the photo and then do further tweaking speaks of continuing interest. I've only been doing "active" observing for a couple of years and I sometimes pass up on opportunities, then berate myself later for lame excuses. As noted, don't sell the gear!

Horizon, "Super Telescope: Mission to the Edge of the Universe", details as per title. Should be a good watch! Haven't seen anyone post about this yet.

There's a quirk though, time-dilation means that no time passes for those travelling at light-speed (overlooking the obvious difficulty of achieving such speed). Doesn't help, of course, since the 2.2 million years still pass on Earth and M31!

It's a bit simpler really. We only experience "now", meaning we see light that arrives "now". When that light started its journey is another matter, except it's always in our "past" by some factor. Since light travels at a finite speed, if the distance is huge it can take a long time. Looking at a distant object involves seeing it as it was when the light actually left the object. So you're looking into a time-machine, in a manner of speaking, seeing things as they were not as they are in your "now". For example, sunlight takes about 8 minutes to reach Earth. When you look at the Sun (safely!), you see it as it was about 8 minutes ago. The light leaving the Sun "now" won't get here for another 8 minutes. Your view of the Sun is always 8 minutes behind "now" at the Sun.

Definitely wrong, sorry. Light doesn't travel into the past.

Everything (almost) in the night sky is light-years AWAY, a light-year being distance. It's not in front of us, time-wise, it's "behind". Say you look at an object that's 100 light-years away, the means the light you're seeing left it 100 years ago and you see it as it was 100 years ago (and where it was too, since it'll have moved since, as will we). Hope that satisfies your curiosity 🙂

I think he was right, space junk = starlink. Sorry, couldn't resist 😉

Android user here so it works without issue. One possibility, from p25 of the manual: iOS – iOS interrupts app’s communication with mount when the iOS device’s screen is locked or when app is switched to background • To have app keep the screen on while you leave it to perform long running tasks, enable Settings > User Interface > Keep screen on Could that be your issue?

A dobsonian is nearly always cheaper and more stable, the mount is cheap to make so your money goes mainly into the optics. A 6" (150mm) dob will beat a 114mm simply on light gathering ability, all other things being equal. Whether you can see nebulae, galaxies and planets clearly depends on many things, including your viewing site conditions, the atmospheric conditions and when you look. They are all possible, given the right circumstances. Or impossible if not! Have a look here:

Not sure if anyone's posted this elsewhere or if this is the best place but... https://www.bbc.co.uk/news/uk-england-northamptonshire-61856975

I have a Nirvana 16mm, it plays nicely with all of my scopes (an f/8, an f/5 and an f/4.4). Can't comment on the 7mm.

A single molecule can't be said to be solid/liquid, surely? It can only have a temperature. Technically, if it's an isolated molecule, you'd have to say it's gaseous. Not claiming I'm correct but that's my logic anyway.

My money says lump of iron slag...sorry! Hope I'm wrong but...

For a single eyepiece, which the Barlow can still be useful for, I'd choose a 12mm from the BST range. Gives you x100 without Barlow and x200 with. I also would think of a zoom for planetary, because of the ability to dial-in the ideal magnification for the prevailing conditions. The penalty for the zoom being more frequent nudging thanks to a narrower FOV.

50 posts to access the classifieds and 250 to place a for-sale ad. You also have to be a member for 30 days/a month ish (I think). Posts in the non-astro sections don't count. Details in the Code of Conduct section, at the top of the page.

Does every chimney pot not have one then? Joking aside, it drew my attention more than the image-quality, so you're not alone.

You won't, easily anyway. Ideally you'll need a test-meter, so beg/borrow/buy one. It doesn’t need to be an expensive one (the likes of Aldi & Lidl often sell budget models), it just needs an ohms or continuity function which most have. Failing that, cut and strip the wires and determine which cut end makes continuity in a simple battery/bulb circuit. You'll have to use the outer of the plug since the inner isn't easily accessible but it's obviously the other wire once you know which is the outer! Don't guess! Reverse-connecting P to N (as you described) is pretty much guaranteed to fry your mount's electronics. Check, double-check and triple-check. Again, a test-meter will easily confirm you have it right in your final lead, end-to-end. EDIT: I think @DaveL59's suggestion above involved cutting the socket off the lead he linked to, not the one you already have. EDIT2: I see what you have in mind, modify your existing lead and plug the fused lead in to the far end? It'll work BUT the fuse will not protect your lead, it needs to be physically close to the battery to do that. Any fraying or damage to your modified lead means the battery will happily set fire to it 😞

Also has 2 other advantages that way. (1) the extension lead means there's a pull-apart connector that should pop if the cable is tugged. (2) the lucars can be left in place permanently on the battery, removing the risk of accidentally swapping polarity.

Yes, you'll need a test-meter, ideally. Don't guess, if you are not absolutely, totally, 100% sure it could well ruin the mount. And don't even think about it without a fuse and polarity protection. You may get away with it for years but it's a "when" not an "if". If you're not confident with electronics and don't have the gear, you're risking much so better to entrust it to someone else or find something ready-made.

You could snip the connector out, solder the wires together and put heat-shrink sleeving over the joins. If it were me, for safety I'd stagger the joins, double sleeve them and also wire an in-line fuse close to the positive croc clip. Again, for me I'd like polarity protection (just a heavy-duty diode will do) because yes, the polarity matters and reversing it, even momentarily, is quite likely to destroy any electronics connected. Because it's possible to connect the leads the wrong way around, it'll happen at some point! Edit: actually, why not connect the croc clips to the (snipped) long lead? Simpler, if it leaves enough lead left.

Probably worth reading this page: https://www.gov.uk/government/news/tough-new-penalties-for-misuse-of-lasers In the UK I would think it better not to have to defend oneself from an accusation of misuse. We all know that a laser can be handy and a legitimate use in astro but considerable caution needs to be applied. Each to their own choice, of course but a minority of idiots have resulted in official kick-backs and laws, unsurprisingly.

Very enjoyable, both parts. I like him as a presenter, he speaks clearly and concisely.

This suggests that changing "true" to "false" in this line: "process.StartInfo.RedirectStandardOutput = true;" would not redirect the command shell's output back to NINA? EDIT: the side-effect might be a global effect on all called-processes though!

Questions: 1) Is it the case that the "echoes" are disappearing simply because the batch file has run and hence the command window gets closed? 2) How does NINA run the batch file? (Bear in mind I have zero experience of NINA, the limit of my knowledge is that I've heard of it!) I spoke to my friend and we suspect (1) above applies.

I'm a bit rusty on DOS but I think your problem lies in that your batch file is called from a "higher" process, so all "echos" are being sent back to it rather than the screen. You need to redirect it (using the redirect >) to the screen, which I can't recall window's term for. However, I know a man who probably knows the answer. If no-one gets back sooner, hang fire coz I'm seeing him this evening!