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Erekose

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About Erekose

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    Nebula

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    Royston(ish)
  1. That is an LX having been placed into Sleep mode and then being brought back to life. It is similar to Park except that Park has the limitation that the scope be permanently mounted and not moved, so that the OTA position cannot be corrupted. Sleep requirs the user to perform an Synchronisation at the end. In Sleep the location, date, time and more important the alignment data is preserved and when brought back to life the LX takes this from the handset and does not need aligning. What it does required is that the OTA is pointed at a star and that the scope is Synchronised to that star. Then the scope operates normally.with valid alignment data. I think that the slewing performed at the start is the scope determining when it is in regards to the end stops. It slews until it is past an end stop position or hits an end stop position. In the basic Sleep Mode no GPS is required as the data is maintained from the previous use and that includes date and time. The LX Classic Manual is poor, or very poor and little real functionality of the early or original Meade Handbox is detailed, however the Sleep feature is on every handbox Meade appear to have produced in more recent times. The disadvantage of Sleep is that the handbox requires power to be maintained to it, so it all needs to be plugged in and left On. This I would say is why hte mode is not used a great deal. One place it is used extensively is Cambridge, see Ronin's location, where they have handsets that maintain power independant of the LX. So when they are put away for the night they maintain the all important data until the next time they are used and do not require the alignment procedure to be performed. A much quicjer method of setting up their equipment. So the description is correct relative to that Mode. However I cannot think that the LX Classic of blenkda has returned to life in that Mode after some 5 years. It is highly dependant of which specific handset blendka has. Although Sleep is selected from Utilities and some of those settings are maintained in NV ram or eeprom or whatever the latest term is. Home now as the product and support to the customer 8 hours time difference is finishing.
  2. I find I need or want about 10. Reason for that is that at the lower focal lengths I would like a 4mm, 5mm and 6mm then a step to 8mm. Find that some nights and scope I can use a 5mm, others the lowest useable is 6mm and at times when the 5mm is good the 4mm will deliver.
  3. It sounds as if it might be The Pleiades, an Open Cluster which at 1:00 would have been East and a little below 50 degrees but estimating the angle is not easy. Below them would be The Hyades, however they have a significant red star in them, or close, that would be obvious and which you do not mention. Orions belt is or was still below the horizon so suggest that option is discounted. I would guess you are referring to The Pleiades. Below this group is there a fainter patch with a fairly bright red star in them, if so the upper and brigher group will be The Pleiades.
  4. Just to add, or better, subtract from the "Flat Earth" idea, I believe there is very little evidence that anyone has actually believed the world is flat at almost any time of what may be referred to as human civilisation. For some reason a lot of these come out of fairly recent idas that we are more "advanced" as previous people and the "proof" was to comment that they thought the world was flat. When they never did. Along similar lines many of our ideas on "history" or "historical situations" are fictitious. A lot of this appears to stem from the Victorian era when a fictional book would somehow become "factual". I believe the Chinese determined a radius or circumference for the Earth a few thousand years ago and I would also strongly suspect that the early Indian civilisations did also as they were seafaring.
  5. Is that not the reticule for the Southern Hemisphere? I thought that Octans is the constellation/asterism used when you are attempting to polar align in the southern hemisphere. You might have the wrong polarscope, somehow.
  6. I would honestly say a book is about the best way to become familiar. Otherwise people seem to refer to the app and either never quite learning to recognise things themselves or they take a long time. It comes across that they rely on the app to tell them what is at any position. So have no reason to commit to memory.
  7. Strange, a camera page I have bookmarked says it is the same sensor used on the ASI 120MM, but the ZWO page gives another sensor. Have ZWO changed the chip they use on the 120MM recently? I have a recollection that it did change. The other camera it is given as being used on are the QHY miniCAM5s and 5f. It is also listed as Micron MT9M034M, not Aptina. Have Aptina sold the production on to someone? The Opticstar name GPCAM would possibly tie in more with the QHY name of miniCAM5s (or f). Thinking of the "CAM" bit in both here. This is the page I have for astro cameras, and the sensors used. Useful to locate some items: http://www.rkblog.rk.edu.pl/astro/kamery-ccd/ You can search the whole lot or for this one select MT9M034M from the sensor list.
  8. I would have thought the 150 was the better option, the 130 is a small unit and as such it really needs a table to make it usable, kneeling on the ground is not the best way of using one. So although a 130 appears suitably small the need to have a stand for it starts to negate the small and portable aspect. Has your friend had the chance to use one of yours, some people do not get on with a dobsonian. It is one aspect of astronomy that people forget. You may find a dobsonian mounted scope good, not everyone else does. As you sound like you are in a position to find this aspect out I would suggest you take the chance to do so.
  9. The standard lens supplied with most camears is not as good as a telescope, the intention of a camera lens is to produce an image during what is daytime. It is a lot brigheter and this additional light can "mask" problems. To get close you would need to buy a good lens and they can cost a few thousand pounds. A Sigma 300mm APO at f/2.8 costs £2900 which you would have to stop down a bit for maximum sharpness. That is only a 300mm and a good apo refractor, say a William Opticsa again will cost around £1000, the GT-81 (GTF-81 ?) or the Star-71 if available here in the UK. The Sigma 500mm f/4.5 is £4800. Maybe to reason people use telescopes is simply cost as a good camera lens is say 5x the cost of a scope. I see you have a location of Cambridge and Somerset, assume Somerset is home, your avatar is Robinson, if you can make it to the NLO Observatory for the SWAF then do so as they have a group of imagers there and you can spend the day getting information from them. I dropped in there about 3 years ago and they were useful to talk to. I will point out that no William Optic's telescope tends to be "lightweight", and a Skywatcher EQ3-2 will not be stable enough to do justice to the possibilities of the scope. Possibly look, wait, for a used scope to come along. Imaging can get to be a very costly activity and perhaps picking up items as they appear. The approach being acquire some good used items while at university to learn with and if it is still your intention after that then look to upgrade the equipment to perform to higher expectations. Does the university Astronomy department not have a mount or scope that you could utilise ? I would have expected them to have a suitable mount at least as I see they hold public talks there with observing.
  10. I would say stay with 1.25" eyepieces, there is a somewhat wider selection. With the arrival of the sider field of view 1.25" eyepieces you are gaining little by going to 2" and they cost more. Additionally with optics bigger means greater cost and the potential of greater optical errors, a lot of spherical and chromatic aberration is contributed from the edge of the lens. 2" eyepieces are additionally large, although some 1.25" eyepieces are also these days, a set of four 1.25" eyepieces are easy to take out and use, whereas four 2" eyepieces are a fair mass of material.
  11. I simply cannot see any of it ever happening. The UK, or Britain, dropped almost totally all space and rocketry aspects many years ago. We did have a location on the Isle of Wright for rocket testing. As best I can see this has to be one of the oddest possible things to announce and sorry to say I cannot see anyone English, Scottish or Welsh being taken in by it.
  12. I bought the 8mm and the 12mm. They compliment each other very well with the 8mm giving reasonable magnification and the 12mm a slightly bigger overall view more in the medium magnification group. It will depend on what it is that you want the eyepieces for: wider views, magnification or general medium usage.
  13. Seeing S@N the other night I saw someone with a large dobsonian type scope. Think they said is was an ultraportable design or similar name. Person I think had built it them self. Although that one was too big, owner was standing on a set of step ladders to use it. I searched and found a Dutch maker, Sumarian, that produced similar and more useable sized ones. Looking at them they seem to be based very much on the use of plywood, with bearing or rocker material where applicable. Thinking that a bandsaw and few easily available tools would cover the necessary items. Is there a source of plans, very likely pdf format, for constructiing something like this using a purchased mirror. Are there plans for these things archived or saved elsewhere on SGL. Thanks
  14. I am around Royston, H Herts. Get observe when I can. Is there no Cambridge, Suffolk, Norfolk subsections. East Anglia is a fairly large area and posting about something that concerns Suffolk seems too far removed from say Meissa who is in Wisbech. Would seem to be easier also if say Cambridgeshire people wanted to arrange a meet up. From my location I would check the Herts and the Cambs sections and could forego the Norfolk and Suffolk related items. If this comes up as Post = 1 please ignore the gretings, had problems registering and I think Ant has sorted everything now but I think the post count returned to 0, had 4 I think so have already been greeted. Part of the reason for the post here was to get what I think will come up as No1 out of the way again.
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