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KevS

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KevS last won the day on July 13

KevS had the most liked content!

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About KevS

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    Sub Dwarf

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    North Lincolnshire
  1. Thanks for posting, that was exactly the problem I was experiencing. Seems a good solution, just ordered some straps myself.
  2. Nigella, I think there would be an obvious change in the characteristic lines of any star immediately proceeding a nova event, attributable both to the relativistic effects on the spectra by the collapse (shift) and the effective end of synthesis (normal burn) and the onset of electron degeneracy. As to what sort of precursive time scale this takes place within is obviously subject to conjecture within the remits of physical theory, as I suspect no supernova/nova progenitor has ever been observed. That is immediately prior to an event itself. But I would hazard a guess one would have to observing at the time of star's demise.
  3. Dave, not exactly plans but may be of use, ideas wise. Personal-Observatory-Project.pdf
  4. There are quite a few dark sky sites on the North York Moors. Not dark dark, but quite dark.
  5. Fantastic capture much better than my paltry efforts.
  6. They are a bit thin on the ground at the moment. FLO are quoting 40-60 days lead time.
  7. This was de rigueur at one time. Some of the maths is a bit hookey but not bad. Times have moved on my copy cost £12.50 https://www.amazon.co.uk/dp/0226109534?tag=duckduckgo-exp-b-uk-21&linkCode=osi&th=1&psc=1 The attached should keep you going for a while. AbookC05.pdf K
  8. https://www.blackwaterskies.co.uk/2013/12/observatory-planning-and-german-equatorial-mounts/ try the above. K
  9. I had this one "run up" by a local engineering company, the all up cost was £200. I have not got around to setting it in the garden yet as I am still seeking command approval.
  10. Not bad here at the moment, so out with the grab and go deciding to set up the frac. Sky seems fairly settled, wispy to the east, reasonable seeing. Hoping to see ingress and exit of io this evening about an hour to go.
  11. Michael, One of the main things to consider in the design of a vertical pier (or any other support) is the "slenderness ratio". Any single vertical column subject to vertical load will flex at 90 degrees to the applied load regardless of how heavy the construction is. The extent of the deflection is also dependent upon how the column is held in place; obviously with telescope piers we are only interested those "captured" at its base. The attached may prove useful. K Telescope Pier Design.xlsx
  12. I don't have a permanent set up so have to put everything together before a nights imaging, that was all going swimmingly until I purchased a TS 150mm (prior to which I was using a 72mm wide field Altair joby) I originally had the 72 on a Prima luce 365mm long bar with loads of room for the auto-focus, power distribution, USB hub, guide scope etc. It was set up so there were only 2 trailing leads from the rig (power & data). Because of the weight (mass) of the new scope and my ever encroaching old age, it was a consideration that the rig was made modular. Basically the main scope/camera and then the guide scope/camera and all of the electrical and data gubbins fitted to a separate bar attached to the top of the main scope rings with thumb screws; a separable system per se. Obviously this would again put me in a position where I have only 2 cables leaving the mount I would obviously like to continue with a "2 cable set up" to reduce possible cable snags/drag. I have a EQ6R-Pro so the overall weight is not a problem for the mount. So basically the question is before I get the soldering iron out has anybody got any other ideas? K
  13. Looks similar to a lump of space junk I saw a few years ago skipping off the top of the atmosphere.
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