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YorkieGraham

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Everything posted by YorkieGraham

  1. Thinking of letting my CN8 tube go as they are fetching a good price on UK astro buy and sell at the moment. Anyone interested Bargain at £10K? http://www.astrobuysell.com/uk/propview.php?view=105549
  2. Thanks for this UK link I will check it out and see if they have them in stock. There didn't seem to be any images of spares when I checked it out but the description seems correct and the GT CG5 is basically the same as my mount but with goto. Thanks to everyone who posted a suggestion, much appreciated.
  3. Sorry to cause confusion. I did need the alignment pin but I have now screwed a M8 bolt in place of a pin, which has the top section unthreaded. Because the new pin is narrower than the original post, which had a wider rectangular upper section for the adjustment screws to push against. There is little adjustment left now in the original adjustment bolts. I therefore need longer adjustment bolts to give me more throw, if that makes sense.
  4. Thanks guys. Charic thanks for the link finding a source for the correct part, I looked for ages and didn't find this. I have ordered some longer bolts now at http://www.ebay.co.uk/itm/121703584614?_trksid=p2060353.m2749.l2648&ssPageName=STRK%3AMEBIDX%3AIT so they should sort the problem for even less £3.81 I may order the correct part from the US though even so as I do like things to be right. Thanks again.
  5. Thanks guys. I had a bolt as you describe so have cut it down. It works but the adjustment bolts are a little short short because the original pin had a square section. There is only a small amount of adjustment. I will have to get some longer bolts now I guess!
  6. I wonder if anyone can help me locate a replacement azimuth pin. I have stupidly managed to break the pin to my CG5. Hadn't realized how soft the metal thread is and was a little rough mounting the head onto the tripod. I have trawled the web but drawn a blank. I am hoping that I wont have to pay to have one machined up. Is the CG5 pin the same as a SW EQ5 pin if I manage to find one? Has anyone else been able to find a replacement? Suggestions gratefully received.
  7. Yes I am sure it is. Looking at the website there have been some improvements and changes. Voyager has been included leaving the Solar System since I went on the ride.
  8. What do folks think about the idea of 13 Zodiacal Constellations. I got thinking about this because Ophiuchus is behind the Sun from the end of November into December, far longer than for Scorpio which the Ecliptic only grazes. As a beginner I never included it when learning the constellations as it wasn't a sign of the Zodiac, it is not easy to trace and I also couldn't pronounce it! There is often something interesting, Solar System wise, going on in the Constellation and many others have suggested adopting it into the Zodiac in the past. I am just raising it again as it is a source of confusement to many joining the hobby that the planets pass through 13 constellations but there are only 12 official Zodiacal Constellations. What do folks think, is it worth getting a petition going to lobby the International Astronomical Union or does anyone know if they have discussed this in the past and thrown it out? I wouldn't go as far as some in suggesting that Cetus also be added although it is hosting Vesta at the moment. Isn't it time that we departed from the Astrological Zodiac Signs and adopted 13 Astronomy Ecliptic Constellations instead. What do others think?
  9. Fantastic movie, really enjoyed the way it was put together. Thank you for sharing. Anybody out there planning a trip to York we have a 'to scale' Solar System set out on the York to Selby cycle track. Last time I did the ride it was intact other than someone had stolen Pluto out at Riccall near Selby. This was before the Astronomical Union made their decision, so maybe the thief knew something we didn't. Anyway if you live in York or ar visiting with a bike, the model gives you a great perspective of the distances involved. You are very quickly through the inner Solar System then the peddling time starts to increase considerably and you start to realise the staggering size of just our local bit of the universe. Unlike the real Solar System you can also pick blackberries and stop off at an old station for an ice cream. Here is a link to the cycle path website. https://www.york.ac.uk/solar/
  10. Celestron 925 on CGEM. My first attempt with my new colour ZWO ASI camera with 2x barlow. Would appreciate any advice about settings for those who use this camera as I am sure that I can improve a great deal on these first attempts. Anyway I am quite pleased for a first go as I have managed to catch Europa starting its transit something I never achieved with my trusty Philips! Thanks for looking. 20_22_02B.bmp 20_56_18H.bmp
  11. There is an article in January S@N magazine giving more details about what they are getting up to if you were thinking of buying a copy.
  12. Many thanks guys for your time. You have reassured me that it is a cooling down matter and not a problem with the optics. I am just getting used to the scope as I had an archromat before getting this, so I didn't have any of this to cntend with. I think I am not leaving the scope long enough before checking the collimation, although I would say that I had left it more than an hour last night as I set up while it was still light. Having said that the temperature did drop considerably last night so I guess the scope was always trying to catch up. I am convinced from what has been said that it is a heat plume causing the effect, not the eyepiece. What I observed was a close match on the first link article photo at the end. Many thanks for the helpful advice.
  13. I was wonder is someone with the same set-up as me can tell me if this effect is normal for a Celestron 9.25 SCT. I have not had the telescope long so I am still getting used to setting up. I check the collimation before starting each session and have noticed that 2 dark lines are apparent when I have centred the star within its Airy disc. They are like the hands of a clock and quite well defined. Any thought as to what is causing this. I was wondering if the Bob's Knobs are too tight and are causing distortion of the secondary but I cannot find any examples on the internet of this effect to back this idea up. I can't find any reference anywhere to this. Any ideas of what is causing this and how to cure it would be very much appreciated.
  14. OK, so try some of the 'Camping and Caravan Club' Certificated Location SItes. If your not in the Caravan Club you could only have stayed on the commercial sites not the CL's which are for members only. The big sites always have too many lights. You need to try out the CL sites. They are very small and privately run, and are just affiliated to the nationally run organisations. Check out their websites and look for certificated locations. They are always cheaper than the commercial sites too.
  15. The Caravan Club has affiliated sites called Certificated Locations. The Camping and Caravan Club do also. Most of these are in rural locations and only allow a maximum of 5 vans on the site at one time. Most are run as sidelines and are located on farms and many are very dark at night. I always take the scope with me when we go away. Some are not great as many farms are now putting security lights up, but many are still good for observing. Do you use a tent or a caravan? If a caravan, then get yourself into the caravan club and try out their CL sites. p.s. I don't work for the Caravan Club.
  16. Sorry Cotterless. So tired when I got in I put this in the wrong section!
  17. Had a great time tonight with Jupiter and Mars. First proper look at mars, some obvious markings showing. Not worked out what they are yet. Seeing was a little unsteady. Great night though! Hope everyone had a good time too. Attach my first quick attempt at processing 2 of the video captures in Registax.Jupiter 12_04_2014 23_04_13.bmpmars 13_04_2014 00_05_39A.bmp
  18. Has anyone bought one of these filter wheels on ebay, they look very similar to ones retailing for considerably more. The last one went for £44 plus £5 postage. There seems to be a lot which the seller is posting 1 at a time. If anyone has bought one, what do you think of the quality? http://www.ebay.co.uk/itm/1-25-Superior-Quality-Multiple-5-Filter-Wheel-for-Telescope-Brand-New-50P/141245048997?_trksid=p2047675.c100011.m1850&_trkparms=aid%3D222006%26algo%3DSIC.FITP%26ao%3D1%26asc%3D20891%26meid%3D5965645800649039920%26pid%3D100011%26prg%3D9312%26rk%3D4%26rkt%3D10%26sd%3D141239127792 I can't afford any more expensive kit at the moment as I have just upgraded my main scope, but would like to get into RGB planetary imaging with my mono camera and wondered whether this would be good enough to get me started. Any thought?
  19. Thanks guys. I am not sure if it was the GRS or a transit. Here is the best image I managed in the merk that was last night. Capture 01_04_2014 20_52_45b.bmp
  20. Just come in from observing Jupiter. Seeing was dreadful, so image results were very poor. I could make out 2 smudges and was wondering what they were. Has anyone taken some images in better seeing? Ill post my image for reference. Not my finest hour tonight though!!
  21. Just got in from my first session. Set up and star alignment was really easy with the on-screen instructions. (Like most men I didn't read the instructions), but the handset was really good. Couldn't work out how to find particular stars though so will have to do some reading of the instructions later. Learned a great deal though. I wasn't too happy with the sharpness of the image, so I took a deep breath and started to collimate the secondary using procyon. Much better as a result but I think I can get better, Jupiter was looking good, but noticed some fringing. I can't believe its the new scope so have come to the conclusion that it is probably my eyepieces. Anyway, had a great first night with the new set-up.
  22. Thanks for the welcome to the club! Yes Anthony, it was that one. Thanks for the tip on the finder James.
  23. Thanks to all. I have gone and done it now. I have managed to pick up a used set-up in excellent condition and am chuffed to bits. The mount with it is a CGEM so it will do everything I will want to do now and in the future. I just have to learn how to use it now.
  24. Thanks for all the replies. Any thoughts on whether the VX mount is up to carrying the C9.25 and a guidscope?
  25. I am seriously considering upgrading and buying a Celestron C9.25. Does anyone know if I will be able to mount it on my current CG5 mount (you can get a vixen type bar option so maybe you can, but this might come a different width) or would it be best to go for a full set-up with the new VX mount package currently available (with good reviews on this site so far). This will cost me an extra £500 though. My old CG5 seams to track well enough for me to image the planets so I don.t want to change the mount unless I have to. I am not particularly bothered about having go-to as I get pleasure from finding objects manually. Does anyone know if it is a simple task to upgrade the finder supplied with these scopes or do you have to start drilling holes and the same question for if I want to mount a guidescope in the future. Appreciate any thoughts members have.
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