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Doc

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About Doc

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    Sub Giant
  • Birthday 06/09/1966

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  • Location
    Nottingham
  1. COMPLETED - Clavé eyepieces

    Tempted but not at the moment.
  2. It's true not one scope does all
  3. Yeah loads I see you have one now, what's it like?
  4. Do you get the line show up on bright stars on your William Optics diagonal Paz?
  5. I used it for the observing session last night (one above). I have found it gives a much brighter view, much better colour, it also minimizes the bloating effect you get round stars, they appear as pin pricks. The only negative is the line the prisms produce on brighter stars. If you are splitting stars and the companion star is where the line is you won't see the companion star. The line doesn't show at all on the moon, DSO's, and dimmer stars. I haven't observed planets yet but it really excells on the moon. Another plus point is the correct orientation is perfect, so easy to star hop or moon hop, it's brillaint. Problem is I have never tried a different one, I just went with the best one I could find so have nothing to compare it to.
  6. 15.02.2018 Back garden Skywatcher 120ED Esprit Delos and Clave eyepieces Clear skies Mild wind and cold Started off the night by visiting the Trapezium in Orion. I have visited this so many times and once again tonight bought a smile to my face. I managed to see the "E" star at 10.3 mag. It's strange as "F" is 10.2 mag but I couldn't see that one. The "E" star appeared while using the 4.5mm Delos giving me x186 and showed a clear gap between A & E. I hadn't set up my Alt/Az encoders and decided to star hop throughout the observing session, it makes good practice, my first target I tried for was the supernova 2018PV in Ngc 3941. I eventually found the area where the galaxy resides but there was no hint of a core and indeed a smudge which would detect where the galaxy was hiding. After about 20 minutes I gave up. Next is a list of the doubles I tried to separate last night: Rigel in Orion, 0.28/6.8, sep 9.5", Split using a 6mm Delos Algieba ( Gamma Leo), 2.3/3.6, sep 4.7", split using a 4.5mm Delos Kappa Leo , 4.4/9.7, sep 2.4", Split using 4.5 Delos 38 Lynx, 3.8/6.0, sep 2.5", split using 4.5 Delos Cor Caroli (Alpha Canes Venacti), 2.8/5.5, sep 19.3", split using 12mm Clave Alula Borealis (Nu Ursa Major), 3.4/10.1, sep 7.8", very faint but split using 12mm Clave 57 Ursa Major, 5.3/10.6, sep 5.5", split using 6mm Delos Eta Canis Minor, 5.2/11.1, sep 4.1", Could not split Theta Hydra, 2.8/9.9, sep 20", Very faint but split using 6mm Delos Epsilon Hydra, 3.4/5.0, sep 2.8", Very hard maybe a peanut split using 4.5mm Delos Delta Hydra, 4.1/10.7, sep 2.7", Very hard but did split using 4.5mm Delos STF 1254 (Cancer), Lies within M67, 6.4/10.3, sep 20.6", split using 12mm Clave Epsilon Cancri, Lies within M67, 6.2/7.4, sep 134", Really easy at any eyepiece length I also had a look at M63 the Sunflower Galaxy a Spiral Galaxy in Canes Venacti, this appeared as just a very faint motting of the background, I could not even detect a core or a shape. The other galaxy I looked for was M94 another spiral galaxy in Canes Venacti, I had more luck with this one being mag 7.9. It showed a core but I could not detect an edge or a shape. The time was about 22.30 by now so I called it a night.
  7. Baffled by my Delos 10mm

    Just checked my 10mm Delos and it's the same as yours. I would say as you wear glasses your eye was not in the correct position and this caused the vignetting experience you described.
  8. Lathe to turn an C Mount adapter ?

    I have a lathe and live in Nottingham, give me a pm and we will sort something out.
  9. A trip round some winter nebulae

    What is the exposure time using your iphone? Nice photo's btw, as you say very similar to the views one gets at dark sites.
  10. Hi Mike You are correct in stating that the whole of the Lunar 100 that I completed quite a few years ago was carried out using the Meade Lightbridge 16". The old adage aperture is everything is pretty accurate when it comes to seeing all 100 objects. Intes scopes such as the M703 have vents around the outside of the corrector, Edge scopes have vents in the body. Have you considered adding vents to your scope and then maybe making or buying a Lymex type cooler. I have read really good reports on these, especially on Cloudy Nights.
  11. Best advice will be to download Stellarium, it's free and easy to use. Look up Uranus and try and match the sky with Stellarium. For someone new to this I would list the following which will be visible in your scope. Moon, Saturn, Jupiter, Mars, Uranus, Neptune. ( In order of difficulty) Then non planet objects: M31, M13, Double Cluster, M57 All these are pretty easy to star hop to.
  12. Uranus is about mag 5.8 so unless you live somewhere like the Atacama desert I don't think you will see it unaided. It will not stand out with low mag it will look like any other star, you need to increase the mag until you notice a disk and then you will see a little colour. It's difficult to find but how I do it without go-to is too star hop to the right area with a low mag eyepiece or a finder and then increase magnification until you see a disk and not a star, you can tell the difference with magnification. It's a lot more harder then Jupiter or Saturn.
  13. Some more work done today. Inside the tube is a set up off 16 x 12mm poles similar to my other DIY mount. The tube is then made to fit and painted matt black. This shows where the encoder will fit. The shaft is drilled out to take the encoder shaft and the spacers on show show how high the encoder will sit. The encoder will sit below the top hat. This will be screwed to the body at a later date. Once again painted matt black. The mount arms will on the UHMWPE bearings and pivot on them. The finished article below. It weighs at the moment 10Kg but should double that when finished.
  14. Take it one step at a time. Firstly forget about imaging and set your scope up for visual work. Make sure the finder is aligned, ditch the extensions and learn to focus an eyepiece. Once you know your way round visually and you know where Polaris is then try introducing pole master and get to know that piece of software and so on and so forth until you are happy with all your kit.
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