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DaveL59 last won the day on September 9

DaveL59 had the most liked content!

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About DaveL59

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    Kent UK
  1. Gave the SV171 8-24mm behemoth a spin earlier since I could see Jupiter was out, tho lots of cloud so wasn't expecting much. Set up the TAL100RS and Jupiter snapped nicely into focus at the 24mm end. No detail at all just a white ball, seeing very poor so no surprise. Zooming in I had to tweak focus around halfway, the white ball grew a little bigger but down at the 8mm end was hard to pin focus, just a ball of fuzz really. Jupiter then blinked out so I expect that was the thin cloud badly aflicting the view. Not a great test to be fair but I was itching to get a look at something celestial with this one, will redo on a better night when I can also switch to other fixed eyepieces to compare. For sure it's not quite parfocal but with the good reports I'm hoping that for £49 it'll be a nice buy and very handy for quick sessions rather than swapping EP's to and fro
  2. tonight I notice Jupiter vaguely showing, lots of cloud which doesn't help but thought I'd at least give the finder mod and the zoom EP a quick try. Had to reverse the finder bracket for a more comfortable fit but it worked well and much easier to switch from EP to finder and back. I think I'll be rebuilding the acrylic adaptor with the 32mm ID tube so that I've more depth for the screws to hold, didn't like the sound of acrylic straining plus to remove it needs the screws undone most of the way. They of course easily drop out as there's only a shade under 2mm of tube holding the screws at that point. Overall tho it seems a reasonably good mod and the pentax angle finder is nice and sharp giving good views without losing much FoV. The SV171 zoom performed fairly well, nice and sharp at the low power end with Jupiter showing well but no detail at all, tho I put that down to very poor seeing. Zooming in I did need to tweak focus but the view became more fuzzy. Not a good test really given the cloud and then Jupiter all but vanished so most likely the clouds that made the zoomed view poor. Will have to test again on a better night when I can then swap to other fixed EPs to see how things compare. I think I am going to have to re-tap the finder securing screw as it wasn't good before with the metal original thumbscrew loose in the threads. This nylon one felt a little more secure but can't take any securing pressure. And sort the rusty screw holding the focuser in place too, hadn't noticed that before this pic.
  3. figured it'd be something like that Chris, having had a few of various makes apart, might be useful for others tho
  4. personally I'd be real careful of aiming a laser into the night sky. You could fit a RDF tho if you can find a suitable mounting, one of the riflescope types may work tho I can't say I've ever tried given mine are wider angle than a 20x probably is.
  5. not knowing the circuit it's hard to say but yes it might have the effect of making the board intermittent or not work. What mark had you noticed, like a leak around the electrolytic? Some go domed at the top which I've seen on some netgear switches and washing machine control boards when they start to function intermittently, think another of my ProSafe switches may be getting to that stage so it'll be a candidate for repair in the near future I think. If you want to replace the electrolytics, pick the same uF but a higher operating voltage, might goe you a better service life.
  6. you'd ideally want an ESR meter to test the cap unless your multimeter already has a capacitance function? Quite possible it blew if it was underrated for the applied volts but that'd make me wonder if the 12v applied managed to find it way across to the 5v side of the board. Which cap failed btw? Wondering too about this resistor that shows discolouration
  7. says OTA only tho, so no tube rings...? Looks to be listed on the bay too https://www.ebay.co.uk/itm/Sky-Watcher-Startravel-80-EQ-1-Short-Tube-Achromatic-Refractor-Telescope-OTA/143765155658?hash=item2179122f4a:g:QjEAAOSwwUlfddf5
  8. I'm hopefully fortunate in that all but the SW130 are ally tubes and are more the scopes that get used often, tho the Note-3 is one that needs to be callibrated every time by the look of things. Just need to clear nights so I can have a proper play with this and some eyepieces etc.
  9. SkEye can be used in a similar orientation if you switch it to indirect mode and align to a known point, just needs a suitable phone holder and tripod adaptor to mount it. There is a thread on here that shows some setups for this. It can't however do the platesolve that this celestron app brings to the party for more accuracy.
  10. nice, and real COM ports too, rare sight these days. oh and SNAP! on the keyboard & mouse lol
  11. if you don't mind the word on the label, how about a metal one: https://www.ebay.co.uk/itm/Miranda-57mm-Metal-Push-on-Lens-Cap-B1/133488872344?hash=item1f148e8b98:g:LrMAAOSwtY1fL8uB tho these camera ones do seem to infer 55mm so best check with the seller for the real ID
  12. am guessing that's Gary at East Coast as per my link, Bill? Heard good things about them and of course you've pointed me there in the past too
  13. you could give these folks a try http://binocular-repair.co.uk/ I'm sure others will provide more recommendations in a while
  14. in that case there's maybe little point in adding heatshrink as it'll stiffen the cable where it enters the rj11 plug, might make it more likely to sustain damage than if it can flex freely.
  15. and here it is, assembled and fitted on the TAL-1, not too shabby I think Of course, having done all that boring out of the acrylic tube it dawned on me... the 100RS finder at 31.6mm is just under the old russian 32mm eyepiece diameter. I already have some acrylic tube of that bore from when I made the 32mm extension piece for the TAL-M. Got lulled into them looking alike so thinking they're all the same build, DOH!!! Oh well, tis done now but if the acrylic doesn't hold up having thinned the walls by a shade over 1mm I can always re-do with a piece of the other tube
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