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eifionglyn

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About eifionglyn

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    Star Forming

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    Oxfordshire

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  1. How about a planet like Uranus where the axis of rotation has been tilted ~90 degrees with respect to orbital plane, but where the planet is close enough to it's parent star that it's tidally locked. With the billions of potential exoplanets out there I'd be surprised if this hasn't happened at least once.
  2. Thankyou for the replies, it is nice to know I am not just shouting (typing?) into the void here I didn't know one could record observations on Sky Safari. Thanks for the pointer. I will have to investigate.
  3. Not on the AZ5 unfortunately, the mount comprises of an offset arm, which can be adjusted in a few positions, but is intended for OTA's with the dovetail on the right hand side of the tube. Of course, anything in tube rings doesn't matter as it can be rotated as needed. I carefully removed the finder bracket to find there are no nuts, captive or otherwise inside the tube, but simply threaded holes in the tube to bolt the shoe on so that is OK. Some 3M pads won't work, as the finder bracket doesn't have a substantial flat surface area to stick to, it's a wide upside-down U section. I
  4. Hi, With the opposition of Mars only a few weeks away, I want to make sure I'm equipped to observe it, so out came the trusty old Skywatcher 102mm Mak. Of the scopes I own, it will give me the best views I think on a small bright target. Here it is, which shows my problem: This particular OTA was sold as a package with an EQ mount, hence the placing of the finder bracket opposite the dovetail rail. I don't have the equatorial mount anymore, and the scope is used with the AZ5, however the placement of the finder bracket is now really awkward. I'd like to move it to t
  5. Thanks! I have thought about sketching, but the problem with that, for me at least, is you've got to be able to draw, at least to some extent.
  6. September 24th - A couple of Globs. With the moon now reached first quarter last night would be the last chance for observing without it spoiling the show. In my north facing back garden, the ecliptic is still low enough in the sky that the house hides the moon directly, but is glow was already washing out some contrast. I placed my improvised light shield on the trellis section of the fence, blocking out most of the annoyances from my neighbour's solar powered garden lights, and waited impatiently for the rest of the family to stop doing unreasonable things like turning the bathroom ligh
  7. September 17th - Back on it. So now we have astronomical dark back, and it's starting to get dark at a time that's compatible with also getting up for work I no longer have to wait for those nights where no moon coincides with clear skies and weekends. By 9:30pm the ST80 was out on the new AZ5 for the first time. Well for the first time for astronomical work anyway, it's spent the summer set up in my home office pointing at my bird feeder with a 45 degree erect image diagonal. Rather than spotting sparrows, tonight we are spotting open clusters. M29 and M39, both in Cygnus. They are well
  8. May 20th, 2020 - Galaxy Hunting. With spring rapidly turning into summer, I thought it prudent to bag some Ms in the constellations listed as 'spring' before they disappear off the western horizon, so I turn my attention to Canes Venatici, which contains thre Messier objects to find. M63 the Sunflower Galaxy, M51 the Whilrpool Galaxy, and poor old M94 that doesn't get a name and has to make do with being M94. Canes Venatici is a tricky one, only two naked eye visible stars from my skies, Cor Caroli and Chara, and except for M94 none of them near to the target objects. M94 though make
  9. May 19th, 2020 first night out. Hercules is well positioned, rising in the east, and oh dear what's this? a security light from down the street pointing straight out, and the house next door has gathered a collection of solar powered decorative garden lights since I last did this. OK, we will adapt. The security light eventually extinguished, and careful positioning blocked the garden lights. I can see where I am in the sky and start to get my bearings again. A very rough polar aligment (ie, pointing it north-ish) and I put the red dot finder over where M13 should be. And sure enough
  10. I've had a range of scopes and mounts over the years, buying and selling as interest waxes and wanes, the largest being a 250mm Dob. With my interest in astronomy picking up again recently, the collection now includes a Heritage 130, an ST 80 (which is mostly used with an erecting diagonal as a spotting scope) and the Skymax 102 Mak on an EQ3-2. Rather than just go through the easy to find old favourites, I thought I'd set myself the challenge of observing all of the Messier catalogue, and recording it. So I made a spreadsheet, and set about observing. And then I thought why not add the o
  11. So tonight we have the opportunity to shoot the Moon, Venus and the ISS passing relatively close. I plan to shoot this with my Lumix G9 with a 12mm lens, so 24mm in 35mm equivalent. The 500 rule tells me I can expect a 20 second exposure before the stars start trailing. But in 20 seconds, the ISS won't have moved very far across the frame, in fact Stellerium tells me that I'll take about 3 minutes for the ISS to pass through the frame. What I want to achieve is the Moon, Venus and stars acceptably sharp and have the entire 3 minutes of the ISS pass represented as a trail, in one image. I
  12. So now the AZ-GTI has an update that allows it to operate in equatorial mode, I assume it can do the same job as a StarAdventurer mount - i.e. mount a camera to it for wide(ish) field astrophotography. Why would I pick one over the other?
  13. They're not *that* big - have you seen one in the flesh (in the metal?) The base of the 200 (and the 250 if I remember right - I've had both) fits with room to spare on a 600 x 600mm paving slab, and they're about four or five foot tall. Could be squeezed in a corner or behind a sofa somewhere. Certainly less of a storage issue than anything that sits on a tripod (assuming you're not collapsing the tripod every time). As for Home Office approval - it's always better to seek forgiveness than permission! The 250 was about the limit for what could be shifted about the garden by one per
  14. Yeah definitely not coming up for me, on an Android phone or iPad. The comparison chart at https://skysafariastronomy.com/skysafari-6-professional-astronomy-telescope-control-software-for-android.html says that Telescope Equipment Settings and Coordinate Grids and Reference Lines are two of the many features on in the plus or pro versions. Seems likely that ability to flip the display would be included in those features. Now to decide if I want the android or iOS version.
  15. Can’t seem to make it work. Maybe it’s only in the premium version.
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