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About Earl

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  1. HEQ5 vs NEQ6 physical size

    I have had both and the EQ6 is much bigger. The Tripod on the EQ6 is also larger diameter legs and heavier.
  2. It can be improved a fair bit by a bit of tweaking, it is the weakest link on the scope but with a bit of work can be ok.
  3. Manfrotto 02b 02B Heavy Duty Camera Tripod. heavy duty ideal for astrotrac style imaging or heavy binoculars. £100 cash on collection from Ledbury only as i have no box to ship it in
  4. from wiki Definition of a moon Size comparison of Earth and the Moon There is no established lower limit on what is considered a "moon". Every natural celestial body with an identified orbit around a planet of the Solar System, some as small as a kilometer across, has been considered a moon, though objects a tenth that size within Saturn's rings, which have not been directly observed, have been called moonlets. Small asteroid moons (natural satellites of asteroids), such as Dactyl, have also been called moonlets.[12] The upper limit is also vague. Two orbiting bodies are sometimes described as a double body rather than primary and satellite. Asteroids such as 90 Antiope are considered double asteroids, but they have not forced a clear definition of what constitutes a moon. Some authors consider the Pluto–Charon system to be a double (dwarf) planet. The most common[citation needed] dividing line on what is considered a moon rests upon whether the barycentre is below the surface of the larger body, though this is somewhat arbitrary, because it depends on distance as well as relative mass.
  5. I had one of these https://www.firstlightoptics.com/batteries-powerpacks/skywatcher-powertank-7ah.html did the job well and has other functionality
  6. AP 900 Power Supply

    Out of the two id use that one.
  7. Pixel size question

    the numbers are only one aspect of the choice, FoV, system F-Ratio and effects on usable chip area, prefered Targets, Budget Related filter choice. quiet a bi to weigh up outside the theoretical numbers.
  8. Ideal 300mm Lens for DSO work

    have you looked at medium format lenses?
  9. Stars don't look right. Help

    focus will shift when you change filter, so getting focus with the filter you are going to use to image with is worth it, and that alone could solve the issue.
  10. Atik 383L with 1.25" filters ok???

    It will, The QSI version is better still as the inbuilt filterwheel is closer the the chip reducing the vignette obviously this increases the price. worth also looking at the Moravian one too
  11. always shoot unde ther maximum by a long way, atmosphere plays a huge part in getting a good image then the price of the eyepeice.
  12. If we work out the elements that our solar sytem is made from can we work out what type of star it was that provided the ingredients for it?