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johninderby

Beyond the Event Horizon
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Everything posted by johninderby

  1. More moon watching is needed uner different conditions to come to proper conclusions about the performance but first look was promising. The 4mm Nirvana eyepiece was really comfortable with bright views. Was OK with the 2x focal extender as well but felt about a 2.0 or 2.5mm or so is worth getting a hold of. So it looks like about 200x is usable on the moon but about 175 might give better views. More experimenting to come under better conditions is in. order.
  2. Well while clear really murky and could only make oit two stars.Couldn’t even do a star test. At least the moon was looking good and spent a while exploring the terminator and admiring the sharp contrasty views. Was surprised at the amount of detail that could be seen in Clavius despite only 82mm of aperture. A few craters could also be seen in Plato.as well. The Evolux82 isn’t supposed to be suitable for lunar observing according to SW but it does a fine job with pleasing views. What stood out was just how exceptionally sharp and contrasty the views were with no traces of CA. As good as I remember the old StellaMira 80mm f/10 was on the moon despite the Evolux being a faster scope. So while we have no idea of the glass used on the Evolux the fact that it performs as well as the FPL53 in the StellaMira (at least for visual) on the moon says a lot.
  3. I sold the scope and mount from mine. Not a bad cheapie scope really.
  4. Clouds clearing away and just waiting for it to get dark. In the meantime had some good views of the moon. Nice and sharp with not a trace of false colour on the limb. 👍🏻
  5. Arrrghhhh!!!! Nice clear sky and the moon out so a bit of a first light of the Evolux82 so got the scope out and in the couple of minutes it took to get it set up wall to wall clouds. Give me a break. 🤬🤬🤬 Edited Clearing up a bit so maybenot hopeless after all.
  6. Never underestimate how much a picky standards agency can hold up things. Hopefully not much longer though.
  7. The Rowan pillar etenstion is a nice bit of kit. Thught it would be released by now but think sorting out the motors certification is keeping them a bit busy at the moment..
  8. Can cause confusion because of the Orion name. Many from the US and Canada make the same mistake bit no big deal.
  9. What it looking like this evening. 😕
  10. Wrong Orion Optics Uk has a UK based factory where they manufacture all their own scopes including the optics.Not to be confused with Orion Optics US that is a totally seperate American company. https://www.orionoptics.co.uk/about-us/
  11. Yes that was the one. SW 150PL with the OO mirrors fitted.
  12. You can find the acetate sheet on Amazon or eBay. Get the large sheets.
  13. The old saying about going down the rabbit hole seems appropriate to AP.
  14. FLOs new SellaMia 90mm is highly rated and getting at reviews by imagers. Compare the StllaMira and Flouostar and they look the same except for the focuser. https://www.firstlightoptics.com/stellamira-telescopes/stellamira-90mm-ed-triplet-f6-refractor-telescope.html
  15. Reading this reminded me of the Skywatcher Skywand. Wonder if anyone has actually seen one? https://www.firstlightoptics.com/sky-watcher-mount-accessories/sky-watcher-synscan-starwand.html
  16. What’s a clear sky??? 😁 Clouded out every night since the Evolux82 arrived last Tuesday. The new scope curse is alive and well.😢😢😢
  17. A bit of info on the subject pf eyepiece distorion and aberationd. https://www.telescope-optics.net/eyepiece_aberrations_1.htm https://www.telescope-optics.net/eyepiece_aberration_2.htm
  18. Correction The nosepiece would hit the filter adaptor not the surface of the filter and is about 30 to 31mm distance.
  19. I use the following setup. The 2” ND3 and polarising filters are attached to the bottom of the rotator. Then the 1.25” continuum filter is fitted to the bottom of the 1.25” to T2 eyepiece holder using a ZWO 1.25” filter to T2 insert that screws into the bottom of the eyepiece holder. Simple but works extremely well.
  20. Spptting scope eyepieces are optimised for daytime use and correct for the types of distortion that are evident in daytime terrestrial use but this usually comes at the expense of distortions that show up in astro use. So while it may be fine for astro use I’m waiting for a proper test by an SGL pr CN member that knows their stuff. If they give it the thumbs up then OK I’ll reconsider.🤔 .
  21. Hi You will need ia little finder dovetail. I used the one rhat comes with this finder shoe and dovetail set https://www.amazon.co.uk/Svbony-Telescope-Finderscope-Dovetail-Standard/dp/B08LDKD8ST/ref=sr_1_5?crid=OI2IX4E8HIRY&keywords=svbony+dovetail&qid=1654353980&sprefix=svbony+dovetail%2Caps%2C109&sr=8-5 Then I used a bit of Delrin (acetal) plastic sheet for the plate that the dovetail fits to. An eBay offcut will do. Then a couple of small nuts and bolts. M5 will do. Hope that’s enough onfo.
  22. Its a pity the app is no longer available. Developed with the aid of NASA it realy is so good.
  23. Unfortunately it looks like the app is no longer available. Used to be available from mapaplanet.org but the website has gone. 😢
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