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impactcrater

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About impactcrater

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    sydney,australia

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  1. According to NASA the length of a Saturnian Day is unknown...who would have thought ?
  2. You may need to know the weight of the scope of interest...it is harder to get that from the manufacture's site . I did some "research" and came up with 5.44 kg for celestron 90SLT and 8.2 kg for the celestron 127SLT and then the others you are looking at in the SE class may be heavier still . The celeston 90 SLT is a quality scope and is pretty light. Astrophotography is not easy with non equatorial scopes and the 90SLT is not one of these.
  3. Taking into account your severe back disability I would suggest you consider a small Dobsonian as they are viewed from the top end whereas the Celestrons are viewed from the tail end and the angles of viewing can involve a lot of crouching down in very awkward positions. The Dob team may advise better on this as I have a scope like you are looking at. A 200 Dob is a massive thing...
  4. I just do not like windows ten...it is channeling us all into 'app land' and 'don't own a disc land' ...the apps rarely work to solve the problem...vote for windows 7 which came with all you needed to do everything.....and when you have a problem it says find an app and then a whole lot of junky 'programs' appear which can cost and you still don't know if they will do the task...put windows ten near the Event Horizon !
  5. I spent a substantial "I will not be defeated' time on this and eventually located this file which fixed the USB to serial file problem with no strings attached- PL2303 Windows Driver User Manual v1.18.0.pdfPL2303_DriverInstaller_v1180_20170406.exe please click on the file starting w PL2303... it went well and did not put a 'make your computer run faster ' program on and AVG had no complaints
  6. Some will be familiar with the firmware updates known as CFM and coming as a zipped file which creates a JAR file from which you are supposed to be able to access the internet and connect to your scope and update it...it is generally a pain and I have told celestron it is awful... that said , one of my laptops will open the JAR file and the other will not despite the newest version of java... there may be a file association problem and windows 10 makes your choices very poor... any ideas greatly appreciated PS I searched this item in the forums but could not find a reference to it.....
  7. there's always the raisins in th cooking cake analogy and when the Universe finishes expanding you can always eat it ! it seems much more appetising than the balloon analogy....
  8. http://www.hawking.org.uk/the-beginning-of-time.html this is Stephen Hawking's take on the Universe which explains the lack of a homogenous Universe by the variations in Cosmic Background Radiation as per 4th last paragraph
  9. a man fascinated by physics like American/Australian Julius Sumner Miller
  10. this is always a good 'head' topic and therein lies the problem of what the human mind is capable of conceiving......whilst the concept of 'space' or the three dimensions is something we can touch there is no theory about what time is...perhaps time is infinite and space is finite...there may have been time before the Big Bang.....we have no way of knowing that is not true.....Einstein put space-time together but he could be wrong.....
  11. 2008 Sydney Australia ...'the smiley face' of the Moon , Venus and Jupiter
  12. the greatest minds in Cosmology don't know the answer to that one .......Only two things are infinite, the universe and human stupidity, and I'm not sure about the former. Albert Einstein
  13. My idea is to send up some artists and make it all into an Art Instillation....
  14. I wish to do a straw pole...would you rate the Digital Age one of the following in terms of reliability ? I bring this to your attention after my scopes digital input failed and I have had trouble finding a repairer and my five year old desktop failed leaving me with lost email addresses and lost music albums....you may see bias....not to mention a new version of a well-known computer operating system..... reliable, good, unreliable, hopeless and frustrating. You may wish to use your own descriptions,,,,
  15. Welcome from the Big Pacific Island...Australia....sometimes I see Europe thru the scope but only on strong 'gravity bend' days....