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About JohnC64

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    Proto Star

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    Ely - Cambs
  1. JohnC64

    Bolting pier to concrete base help.

    Another option is to go for the chemfix - chembolts. https://www.sealantsonline.co.uk/ProductGrp/004400510001 Just Drill a hole into the concrete and resin fix them in to get a nice flush fit. Then you just bolt into them from the top with standard bolts. The advantage is that if you wish to remove your pier, you don't get any nasty threaded rods sticking out of the ground. Councils use them to fix bollards and the like. Hope this helps John
  2. JohnC64

    HitecAstro - Mount Hub Pro on OSX

    Hi Rob, I have had a look at the way that the software works for the HitecAstroDC and DC2. Unfortunately it appears to have a different control protocol so I don't think that I will be able to mod my program to suit your needs. I have sent you a PM with details of the VID and PID values that you will require to modify the INDI driver .rules file. That combined with Information you obtained from the INDI team should enable you to get the Focus DC2 working with your system. Cheers John Edit: Looking at the GitHub repo for INDI, It looks like Andy Kirkham has updated the source so that it will work with the FocuserDC2 as the new VID/PID is in the source. Downloading the latest of INDI will probably sort your problem.
  3. JohnC64

    roll off roof wheels

    Hi Paul, I went for the these http://www.fhbrundle.co.uk/products/0586604000__80mm_Dia_V_Groove_Wheel_One_Ball_Bearing_Internal_Support They fit inside the toprail so give a nice low profile. The first two pics are from inside the obsy and the last one was before I fitted the roof. HTH John
  4. JohnC64

    Mount hub pro - API?

    One thing i noticed when I wrote my Mac version of the MHP software was that if I sent a focuser command, whilst the motors were moving, you could not perform any other commands. As there is no feedback from the MHP, you did not know that the command had failed. I guess it will be the same for the windows command too Cheers John
  5. JohnC64

    Neq6 pier

    Hi Andy, I got mine from JTW Astronomy via Amazon. https://www.amazon.co.uk/Skywatcher-EQ6-Mount-Pier-Adapter/dp/B00ZMDGTDC They are currently out of stock but you may be able to contact them via their website http://www.jtwastronomy.com There are other suppliers too http://www.billetparts.co.uk/catalog/pier-adapter-p-136.html http://www.green-witch.com/altair-astro-multi-mount-pier-adaptor-2679-p.asp The other option is to go DIY - I remember someone on here using a brake disk with great success. John
  6. JohnC64

    Neq6 pier

    Hi Andy, Here are some pictures of the pier I had made. The pier itself is 1.2m high and has an 8" plate on the top and a 10" base plate. The plate is 10mm thick top and bottom and the steel tube is 6mm thick. I had an owl hole fitted so I could get access to under the top plate so i could bolt down the Mount. Then had it sprayed at a local car repair place and they also sprayed wax oil on the inside to prevent rusting. I bolted it down using chem-bolts and roughly aligned it so that it was within the adjustment of the NEQ6 and then fine tuned the PA afterwards. HTH John
  7. JohnC64

    Widefield rig for QSI

    Well back in 2014, I said that I wanted to put together a wide-field rig for my QSI 683WSG and I have eventually managed to get started on it. :-) The WSG variant of the QSI 683 has an inbuilt back focus such that canon lenses just don't quite work. (They fit OK on the WS variant with an adapter) To get over this problem I have used a Pentax 6x7 medium format lens that has an back focus register of 84.9mm. QSI used to do a 6x7 lens adapter for the camera but it was about £225!!! but have since stopped making them. I have taken a Canon - 6x7 Lens adapter, bought on eBay 3 years ago, and machined off the canon adapter at the back to give the correct back focus distance. Then drilled 4x 3.2mm holes straight through the back of the adapter into the central lens area. From the other side , I then drilled 5.6mm holes back until about 3mm from the camera end to give a shoulder for the screws used to fix it to the camera. I also needed to cut a step off the top of the adapter so that it didn't foul on the guiding head. This then made it look like the QSI adapter. To attach the adapter, I removed the T Mount-attachmenton the camera and then fitted my custom adapter in its place. To mount it all together and to give some support, I bought a Gemstone Lens support and Attached it to a Mini Dovetail bar. Original QSI Adapter: https://www.optcorp.com/qs-ad5-p67-wsg-pentax-6x7-lens-adapter.html Gemtune Lens Support: https://www.amazon.co.uk/dp/B00VE0KH2Q/ref=pe_385721_51767431_TE_dp_1 Now it is assembled, I still need to check the measurements to ensure that the register distance is spot on and to do a test run (Awaiting a clear(ish) night). I will probably fit a velcro strap to just secure the lens in place and need to get a Teleskop-express micro-focuser large enough for the 6x7 Lens But for now here are some pictures of it all together Cheers John
  8. JohnC64

    Imaging gravitational lensing

    Hi Dan, The Twin quasar is an amazing object. The gravity lens shows you two images of the same object and that the light from A gets here 417 days before the light from B. Heres a picture that I took back in 2012 with a canon camera (the two 'dots' in the right) It also easy to find as NGC3079 points right at it. John
  9. JohnC64

    First attempt at M81

    very nice image - good star colours and the M81 showing some nice dust lanes John
  10. JohnC64

    Crab and Whirlpool experiments

    Great result - especially using your guide cam. Look forward to seeing your images when you get your new camera John
  11. JohnC64

    NGC 2264 Cone Nebula and Fox Fur

    Cracking image there Barry with beautiful subtle detail when zoomed in close. John
  12. JohnC64

    IC 410 HA Tadpoles

    Thanks very much to Peter and Barry for the kind comments. Yes i think your right Barry, there are some dark rings around the stars. Always something more to learn with processing Ta John
  13. JohnC64

    IC 410 HA Tadpoles

    Hi Rob, When I fit my OIII filter, I think i will take the time to replace my Dark and Bias library. Yes there is some vertical banding over towards the right hand and I think a new bias set will sort that out. Cheers John
  14. JohnC64

    IC 410 HA Tadpoles

    Thanks Michael.
  15. JohnC64

    Mount hub pro - API?

    Hi Daz, I have used the .net interface and that appeared to work fine. What Development environment are you using?. If you use visual studio, then create a .net win forms project, and on the references node in the project tree right click and add reference. Select browse and add the c:\programfiles x86/hitectastro/mhpcom.dll. The API should then appear in the object browser HTH John

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