Jump to content

Stargazers Lounge Uses Cookies

Like most websites, SGL uses cookies in order to deliver a secure, personalised service, to provide social media functions and to analyse our traffic. Continued use of SGL indicates your acceptance of our cookie policy.

  • Announcements

    sgl_imaging_challenge_banner_lunar.thumb.jpg.ef4882eb5fb3610f8a68e5e6913de0e3.jpg

JohnC64

Advanced Members
  • Content count

    908
  • Joined

  • Last visited

Community Reputation

402 Excellent

4 Followers

About JohnC64

  • Rank
    Proto Star

Profile Information

  • Gender
    Male
  • Location
    Ely - Cambs
  1. 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
  2. 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
  3. 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
  4. 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
  5. 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
  6. 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
  7. First attempt at M81

    very nice image - good star colours and the M81 showing some nice dust lanes John
  8. Crab and Whirlpool experiments

    Great result - especially using your guide cam. Look forward to seeing your images when you get your new camera John
  9. NGC 2264 Cone Nebula and Fox Fur

    Cracking image there Barry with beautiful subtle detail when zoomed in close. John
  10. 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
  11. 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
  12. IC 410 HA Tadpoles

    Thanks Michael.
  13. 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
  14. IC 410 HA Tadpoles

    Many thanks Paddy and Allinthehead. Yes there does appear to be some bands in there. Its not an issue that i have seen before and possibly due to the new workflow that i tried for the second process. Cheers John
  15. Back Into Space

    love to see these objects from the southern hemisphere. Nice one John
×