Forum Replies Created
-
Posts
-
Posted by Paul A Brierley at 21:06 on 2010 Aug 06
Thanks David,I thought it had to be something simple. It was nice to go out on the fly, and set UP. It’s one of the advantages of a dobsonian, there isn’t any messing about.If it’s clear again tomorrow, then I will go out again.
Posted by David Arditti at 16:22 on 2010 Aug 06
Paul, according to WinJUPOS software, at the time you give, there were no satellite shadows on the disk. It would have been obvious if there had been anyway. Satellite shadows are quite large and intensely black, easily recognisable when you see one.The NEB currently contains both white ovals and dark brick-red spots. Longitude of the central meridian at the time you report is about 19 deg. (System II)A map made by Einaga on August 01 shows a dark spot in the NEB at II=85 and a white oval at II=100. Both of these would be, as you describe, to the East of the CM (following) at the time you give, so you could be referring to either of them, but it seems you are talking about the dark red spot.
Posted by Andrea Tasselli at 10:32 on 2010 Aug 01
Hi David,I guess sheer luck and living in the east! But my run of luck is out. I can only see clouds in my future :(Andrea
Posted by Marlyn Smith at 09:57 on 2010 Aug 01
That’s been a very useful review. My local astro society are looking to purchase a non-GoTo scope in the near future. The Skywatcher will be on the list for discussion for sure!
Posted by Marlyn Smith at 09:48 on 2010 Aug 01
Drawing of AR1092 in H-alpha 29 July 2010 by Erika Rix.Posted by Marlyn Smith at 09:46 on 2010 Aug 01
AR1092 in white light imaged by Peter Paice 29th July 2010.Posted by David Mottershead at 21:28 on 2010 Jul 31
HelloAnother great set of Jupiter images, showing excellent detail. The question is, where are you getting all these clear skies from? Tuesday of this week aside, I haven’t had a clear sky for ages.
Posted by David Arditti at 13:50 on 2010 Jul 31
Thanks for the thorough review, David. I completely agree with you on the enjoyment value of going "back to basics" with a very simple, but well-made, telescope occasionally, when you are used to the more high-tech stuff, and dusting-off those traditional object locating skills. I hope you get many more nights of great observing out of it.
Posted by David Mottershead at 12:36 on 2010 Jul 30
HelloExcellent photos – and lucky you having some clear skies!!
Posted by Marlyn Smith at 19:24 on 2010 Jul 26
More images by Dave Tyler below showing AR1089’s progress across the solar disk, 24th July 2010.
Posted by Len Entwisle at 11:05 on 2010 Jul 24
Whoops . This was flagged up in the Sky & Telescope updates yesterday Kamil Missed that ! The crater was originally flagged up back in 2009 .
Posted by Marlyn Smith at 09:13 on 2010 Jul 22
Image by Dave Tyler showing new sunspot group AR1089 in white light 0814 UT on 21st July 2010 still near the eastern limb. This group is developing into a substantial active area and is well worth watching as it journey’s westward across the solar disk. Remember your safety procedure when viewing the sun and never look at the Sun directly without the proper filters.Posted by Marlyn Smith at 21:05 on 2010 Jul 19
Image by Richard Blake-Reed. 1/90th sec. Approaching 3rd contact, prominences extended along the limb.Posted by Marlyn Smith at 21:02 on 2010 Jul 19
Image by Richard Blake-Reed. 1/125th sec. Approaching 3rd contact, several prominences on show.Posted by Marlyn Smith at 20:56 on 2010 Jul 19
Image by Richard Blake-Reed. 1/90th sec. 2nd contact.Posted by Marlyn Smith at 20:33 on 2010 Jul 19
Image by Richard Blake-Reed. Approaching 2nd contact, 2 beads remaining.
Image by John Mason. 3rd contact, diamond ring.
Image by Martin Mobberley. 2nd contact.
Image by Richard Blake-Reed. 1/125sec. 2nd contact.
Approaching 2nd contact, 5 beads remaining. Image by Richard Blake-Reed from Hao Atoll using a Nikon D80 + Sigma 500mm zoom lens at infinity, 1/250sec F22 with ISO 400.