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MrZuiko

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  1. Hi Bryan, Thanks fella......old tech by todays standards but a lovely piece of engineering , not wanting to start a war but it beats my skywatcher star adventurer pro at that focal length as I only ever managed to get 45 seconds @200mm and I really want to see how the astrotrac handles longer lenses and longer subs! What's your longest focal length/sub that you have managed to get with yours? according to "photon's to photo's" my Oly has a much better s/n ratio than my D800 eager to try that on Andromeda and a longer focal length! Ash.
  2. Hi all, My first time using the Astrotrac tt320x ag...........Nikon D800 with a vintage 200mm f4 manual focus nikkor @ f8 15 x 3 minute subs @1600 6 x 3 minute subs @800 10 darks 15 bias no flats This was a quick test to see how it preformed as it was a school night and have to be up early for work!! I'm sure that I could have gone longer,next time I will take more lights etc and will try my Olympus Omd em1 with the 200mm f4 nikkor lens which will give me a focal length of 400mm to get a bit closer. Very happy with the results.....first time using astrotronomy tools set and photoshop.......very new to processing help and advice always welcome! Clear skies. Ash.
  3. Evening guys, Quick update and my first image with the Astrotrac first time using astronomy tools and photoshop,details will be posted in the imaging deep sky section. Ash.
  4. Hi Phil, I honestly don't know as I did research what power supplies worked as stated from Astrorac themselves.....Suitable Power Supplies The TT320X­AG can be powered by any of the following: ● a car battery ● 8 x 1.5 V alkaline cells (a suitable battery holder with lead can be purchased from your AstroTrac Dealer or from AstroTrac directly) ● 10 x 1.2 V NiCAD or NiMH rechargeable cells ● a mains to 12 V DC adaptor In general, we recommend using a 12 V 7.2 Ah lead acid gel battery. I have replaced the 8 cell battery holder,I'm just happy that I have been able to fix it.......at one point I almost threw it in the dustbin. I took sometime to identify and purchase the required capcititor! I have seen these supplied with car the battery adapters as shown in this picture,so can probably rule that out! Ash.
  5. Quick update the capcititor's have arrived at long last and great news I've soldered the new one on was a little awkward as they are so small.......soldered the jack on to a new 8 cell battery holder and bingo I'm back in business as it's working!!!! powered on and it set itself in the home position....pressed play button again and it started tracking....pressed rewind and it rewound back to the home position so now gotta wait for a clear night! Thanks Stuart for all your help and I to have spares capacitiors should anyone require one....lets hope not!! Clear skies all and keep safe. Ash.
  6. Looking at your pcb and mine they both show the capcititor with the the "red block" facing to the front of the pcb,so surely this is the position to solder it to the board. Ash. Ash.
  7. Hi Stuart, Yes I have solder,not sure if it has the "flux" built in tho, so are you saying that it will be difficult to get a good join even tho it's surface mounted? How can you tell which way it has to be mounted? these are what I have ordered surely just mount it with the lettering upwards? I can get my hands on a multimeter what next? I'm crap at electronics but quite handy with wood! Ash.
  8. Hi Stuart, Can I ask your advice please fella........I have solder and soldering iron would I need to use flux or can I solder without? this is the state of my pcb now that I have taken off the burnt capacitor to my untrained eye it looks in good condition with no obvious deep scars!! Your thoughts please. Ash.
  9. Hi,Seem to be going round in circles...I've had to cancell the order as I made the mistake of ordering 475 and not 476c not having luck luck online apart from ordering from China which of course will be on a slow boat and not a speed boat!! Not finding a UK supplier as I require them to be 6mmx3.2mm otherwise they ain't gonna fit! Wouldn't have thought it would be so difficult getting hold of the correct part!........so I've ordered 5 from China now just gotta wait! Ash.
  10. Another update lol......just whipped out my pcb and the capacitor donesn't match yours! I've got 476c and 30ju2 on mine so I'm guessing it's a "c" size not "d" I'll have to search again for the correct size! I have found these on Ebay TANTALUM CHIP CAPACITOR 4.7uF 25V 10% Case C KEMET T491C475K025AT PACK of 25 Ash.
  11. Hi Stuart, No multimeter I'm afraid......I've ordered a bunch of 16v tantalum capacitors that I have found on Ebay and give that a try.......I'm hoping that it will be that easy !! Thanks for your help so far really appreciate it. Ash.
  12. Hi Stuart, Quick update I have found on ebay a seller with a 47uF, 16V surface mount tantalum capacitor but with these case markings......476,16R, 907 not 128! I have sent a message and photo to them so hopefully I'll get some good news! Watch this space....pun intended! Ash.
  13. Hi Stuart, Thanks fella for getting back to me and the picture sure does help! now to find a replacement....so far I've found some but the numbers don't match on the casing (475,16R,128)...is it critical that the numbers match up?I had no joy with the 8 AA cell battery pack hence why I tried the 12v cigarette lighter route as I understood it could be powered this way...how wrong was I! Regards Ash.
  14. Hi Stuart, First apologies for the late reply ! That would be great if you could help me idenify the part,I did email the managing director again asking for his help with this matter but got no reply there! I would like to try and get this working,I even had a crazy idea of connecting a speeed regulator and a reversing switch etc to see if I could spark it in to life.....but your idea sounds the best option. Fingers crossed it's worth a punt!! I wait your reply with interest. Thanks Ash.
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