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Astroegg

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About Astroegg

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    Star Forming

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    UK
  1. I venture out just before midnight to walk off a few fabulous ales I've had and make sure the dog gets a last trot out before bed, then I see a halo around the Moon, but not like a halo I've often seen before - this is a wee little fellow barely half the diameter of what I'm used to. Is this a thing? A certain ice Crystal configuration that causes it? Rare Or am I just hopeful? Should I have had less ale ? I took many pictures on my phone, at several variations of ISO and exposure timings, even propping myself up against a bin for a tripod - none of which do Such a wonderful scene and beautiful phenomena justice ? Can anyone enlighten me as to whether I was really seeing a Moon halo and if so, is it uncommon at such a small size?
  2. Image needs a little processing - was taken with a mobile phone, but I'm sure there is some data there that will hopefully show it...
  3. Astroegg

    Moon Halo

    Moon Halo visible in South East UK at about midnight on 28th June 2015
  4. I love Moon halos, but it seems the one I can see at about midnight tonight is really big! I know that commonly they are 22 degrees, but this just seems bigger than that, so I wondered if I am seeing a 46 degree halo??? Can anybody else see one, and if so, does it appear big to you?
  5. Everybody looking forward to this tomorrow... Earthsky: Get ready! Comet ISON to sweep closely past Mars on October 1
  6. Wonderful hour or so of observing and even caught the ISS sailing past. Forgotten how much everything gets covered in that cold, slimy film of dew once the temperature really drops though so that gave me an excuse to call it a night. Got a chance to test out the new power supply for the scope though and also my new Baader Steeltrack Crayford focuser (such an improvement for the SCT.) Was just utterly wowed by the beauty of the Moon last night. Like an old friend re-found again.
  7. My sympathies... I suffer exactly the same restrictions! I'm sure one day I will get the time without any other responsibilities, but for now, I've just got the little one off to bed and left my better half with a glass of wine so am off out for as long as I dare.
  8. I set up the telescope and binoculars for a spot of daytime observing of the Moon and am pleased because with the weather forecast I have at the moment... I'm all good to go for some observing from my own back garden!
  9. Left it plugged into the standard DC charger for a couple of hours and the charging light came back on. I left it to fully charge overnight and it is back working fully again now. Not sure if the capacity of a full charge has been affected but at least it is not dead thank goodness. Thanks for all suggestions.
  10. I managed to leave my Sky-Watcher 17Ah powertank switched in the ON position when I last used the unit (month or so ago) and although nothing was actually on (lamp, radio etc) the tank seems to be totally drained. Worse though, it does not appear to be charging at all when I plug in the DC input charger. Perhaps I have killed it. I have a trickle charger which I needed for an errant car battery once - could I use it to recharge the powertank? Would I be able to hook up the trickle charger to the car charging clips on the powertank or do I need to somehow open up the power tank and get to the actual battery contacts? I'll try and check the DC input charger and the fuses on the powertank before I do anything drastic but am I going to have to butcher the unit?
  11. I'd be interested to hear how you get on with this...
  12. In this APOD, a photographer has taken several photos of the Moon as it rises above the horizon. You will see the sequence shows the Moon to be the same size as it rises whilst also nicely showing the orange colour near the horizon, but paler colour higher above the horizon. The final frame of the photo was taken with a longer exposure, which makes the last moon a much brighter white (overexposed) compared to the others, thus showing all the points you questioned in your post.
  13. Hi rizzi, You have several questions so I'll do my best... The Moon is brightly lit because sunlight is reflected off the surface of the Moon (The Moon has no light source of its own, it is only the light from the Sun bouncing off the lunar surface back towards Earth). The Orange colour of the Moon is because the light is travelling through the Earth's atmosphere and being refracted (rather like a ray of light is "bent" when passing through water or glass into the colours of the rainbow.) Since the Moon is low on the horizon when you first see it rise, the light reflected towards you off the surface of the Moon has to pass through more of the Earth's atmosphere because it is at a shallow angle, so the light will be refracted more (towards the red colours), hence its slightly orange colour. As the Moon climbs higher in the sky, the angle the rays of reflected light coming from the Moon gets more direct, so we see them through less of the atmosphere, and consequently the refraction becomes less and they appear in their more natural 'lunar white' state. When you tried to photograph the orange Moon, your camera may have been on an auto exposure setting, which will try and compensate for the dark image you are trying to take, so will hold open the shutter for slightly longer than in normal daylight therefore capturing more light. This will slightly 'over-expose' the Moon and wash out the orange colour you see with the naked eye. Try manually setting the expose time to shorter exposures and you will get more true colour results - practice makes perfect to find the optimum settings your camera requires. The difference in comparative size you noticed as the Moon rose higher in the night sky is actually a phenomenon which makes it look like the Moon is bigger when it is near the horizon, whereas in actual fact the Moon is the same apparent size when it is high up in the sky as it is near the horizon. It is not entirely known why this optical illusion occurs but the are many explanations you can find on the Internet which document the peculiarity. Hope this helps you in your quest for better stargazing. Regards, Astroegg.
  14. Some great pictues and video from last nights sightings: http://www.bbc.co.uk/news/uk-19683687
  15. It is not everybody's cup of tea but the Baader Vario Finder could be your answer. It is small and lightweight and quite versatile so won't tip the scales on your 9.25 and can also be adapted for purposes other than guiding/finding. I was going to get one myself to swap the finder on my CPC 1100 but have decided to go for a larger APO refractor unit as the 1100 has the real estate to piggy back one. I don't really know how much extra weight you can pile onto an EQ6Pro but with the heavy SCT and probably some weighty photography kit, a small scope like the vario would be ideal to keep weight down. There are varoius guide systems that can be incorporated with it so most budgets can be catered for. I'd be interested to hear what you finally plump for...
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