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About MarkyD

  • Rank
    Star Forming
  • Birthday 21/04/1964

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    New Forest
  1. Flymesh bahtinov mask

    Wonder if it would work for a DLSR lens - diameter 82mm?
  2. Electrical supply to observatory

    You can only spur off one socket per socket on a ring final circuit with a 32A MCB and 2.5mm2 T&E. Anymore is not allowed. A radial final circuit is different and should be 4mm2 with a 32A MCB. If the spur is a FCU (Fused Connection Unit) you can run as many sockets as you want as that cable is protected by a 13Amp fuse max. More of a concern is what size cable is the SWA it should be a minimum of 2.5mm2. When installed tests (r1 +r2, Insulation, Polarity, Zs and RCD times) should have been carried out which would indicate whether is is fused at the correct rating and meets disconnection times Part P and the 17th Edition Regulations are two different documents although there is some crossover and Part P only applies to domestic and not Commercial or Industrial where the 17th Edition is more relevent
  3. If you look at Feburary it has one less mark. There are 15 marks per month
  4. Summer - Winter

    I have come to the conclusion that I am a summer observer. Not having an Obsy is a major drawback when keeping warm. Either that or I need to emigrate nearer the equator
  5. Any Ardunio + Windows programmers out there?

    This bunch provide timer software that can control various relay boards like the Velleman. Depends on your budget http://www.serialporttool.com/index.htm
  6. EXIF data contains all of the image information recorded by the camera (date, time, GPS loctaion, shutter speed etc) If you download the free program IrfanView you can view the EXIF data from this. It is also a very handy program for batch processing etc
  7. Arduino Based Weather Station

    I was getting noise from the PWM powering my Dew Heaters. I used these to Isolate the power side after the MOSFET drivers. They are the square block on the pcb picture 50V 10A EMI Filters
  8. Electronics and the cold: a discovery.

    Have you tried one of these with a frost stat Tubular Heater
  9. Arduino Based Weather Station

    -1 means there is no SPI signal. -2 is the signal is to strong. -3 is the signal is to weak
  10. Gas struts suddenly failing

    Vauxhall Vivaro Tail Gate struts are pretty robust
  11. Arduino Based Weather Station

    Is there a way to place a carbon stiffener on the bed and print on that to incorporate it into the finished piece
  12. Arduino Based Weather Station

    Never had a problem with Mouser deliveries. Usually arrives within 2 or 3 days with import duty & VAT taken care of. All of their stuff comes from the US I believe
  13. Star Adventurer or the Mini Version?

    Max recommended 100mm is due to the larger Periodic Error - see post below. There is nothing in the manual about max lens length. FLO has the no specs available under most of their stuff
  14. Star Adventurer or the Mini Version?

    I am presuming that is when you use the camera body as the mounting point. The 100 - 400mm has a mounting ring for the tripod which balances the load and takes the weight of the lens off of the lens lock ring
  15. Star Adventurer or the Mini Version?

    @Chinapig Thanks for that small review. My payload will be a 6D MKII and max a 100 - 400mm lens. I will probably be using the 16 - 35mm more often than not so I will be well below the payload max for the mini @Stu Thanks - nice to read about both mounts from the same user - looks like the mini will be the way forward