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About dyfiastro

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    Star Forming
  • Birthday 13/02/84

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  • Interests
    Photography, astronomy and astrophotography
  • Location
    Borth, Wales.

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  1. Study for a 203x1000 newtonian dobsonian base

    Thanks This is very much still in the beginning stages but Looking at the standard 200p dobs there only seems to be a single point of contact as well. I do intend using at least one more and maybe 2 more if I can get some cheap enough. The extra rings will also then be used as stoppers so I am able to rotate the tube easier without altering the pivot / balance point. The tube ota in the photo has gone back to my mate and I am waiting for mine to arrive, once its here I will be able to progress further.
  2. Study for a 203x1000 newtonian dobsonian base

    I am in the process of building a basic dob mount for an 203/1000 as well. I wanted something that I could use away from home but easy enough to convert back for obsy use. Here is the basic design that I went with, the entire thing was put together using off-cuts from old bits of furniture etc... I am just in the process of painting it all up but pretty happy with the result. I went for the traditional record for the azimuth bearing due to having a scratched one laying around. a better alternative may be added later if required. The Alt bearings are drainage pipe end caps that bolt directly to the the scope rings. In total the entire thing has cost me about £9 and the base can be moved in one piece or split if required.
  3. Portable setup needed

    Well I thought I post a quick update to say that I am now back looking for a solution. the newt I was having has an "issue" with the mirror. I have built a simple dob mount for a 200P so may still go down that route however I am looking at alternatives as well. I was also considering something like 127 Mak on a either an AZ goto mount or possibly a star adventurer. A 200P / PDS would give me extra aperture as well a nice addition to the observatory when not mobile. The only issue here maybe the manually tracking, I have never used a dob so very much something new to me (I do however like a challenge). The Mak127 is a lot smaller, more portable. I am expecting the planetary and lunar images to be similar to what I currently get with my 130PDS. An AZ Goto mount is cheap however The star adventurer would give me a portable mount for wide field imaging as well. Any input would be great and experiences would be great
  4. Thankyou very much. If it comes to it I may end up replacing the focuser, If I can find a short term solution I would however be very happy.
  5. I have just been out to the observatory and taken the threaded adaptor from my 130PDS off to see if it was the same, its not. The threaded adaptor on this is a fair amount larger than than the crayford adaptor from my 130.
  6. Thanks for the link. I did see that one and also the the one on the modern astronomy website. I am not sure if this focuser uses the M54 thread however, if anyone can confirm this then the adaptor would solve the problem.
  7. Thanks for the reply. I have the 2" adaptor but not the 1.25" adaptor. I am going to have to test it tomorrow to see if the 2" adaptor will allow me to obtain focus but my suspicion is that it will put the camera too far back. I was hoping to get a low profile adaptor that would replace the screw fitting on the tube like you can get for the Crayford focusers.
  8. Hi everyone I have just purchased an older 8" Newt (older blue explorer 200p I think is the correct model) to build up a dob and also for use with the HEQ5 when needed. Unlike my 130PDS this seems to have an older style R&P focuser. Can anyone give me any advise on what adaptor is needed to attach a DSLR and Baader CC directly to the focuser. From what I can tell the tube is a none standard fitment and I cannot seem to find the correct adaptor needed. The inside of the focuser tube measures about 60mm. Any info or advise would be great. I did notice that Modern astronomy do one with an M54 thread but I am not sure if this is the correct one. Here is a photo of the focuser and standard adaptor, my standard 2" ones do not fit This is very much going to be a project so any tip or advise would be great. Thanks in advance for any help or advise. Mark
  9. Portable setup needed

    Thanks for the reply. I have however already had the decision made for me. Having just come home from a mates with an older blue skywatcher 8" Newt. Work will begin shortly to build a dob base and a few modifications to the scope its self. Thanks again
  10. Good Evening everyone Since building the obsy and pier mounting my HEQ5 and 130PDS I now have a small dilemma. The way in which I have built the obsy means that there a few minor restrictions on where I can and cannot image. The wind here gets pretty bad and living on the coast is one of the main issues that has previously stopped play on multiple occasions. The walls are that little bit higher to help protect against this however this also means that I am a little restricted on how low I can go. Along side this I also have issues with anything to far west due to that being the direction that the roof rolls off and gets in the way (for the most part this is not an issue). I am now looking for a portable setup mainly for lunar,solar and planetary imaging for times where I cannot do it from the obsy or where I feel I can get better views elsewhere (A local spot is also just over 1,000ft above see level and more inland compared to the obsy which is only about 10ft above see level and less than 500 meters from a beach). A typical example of this will be next sunday when there is a solar transit of the ISS right in my line of fire. From the obsy I cannot get it due to it being late evening and the sun being too far west. At this present moment I am leaning towards some along the lines of a SW 127 Mak on a SW AZ GoTo mount (mainly due to knowing where I can get one for a little over £200). The other was I had started to look for something larger for the obsy. The natural choice was the 200PDS as its about the limit of the HEQ5. I was considering one of these and then building a dob mount for it for when its not mounted in the obsy or wanted something portable. If I went the dob route then I know I will have to manually track at least for now until I can build a motorised tracker for it during the winter. Now I have never tried imaging with a dob so any input here would be great. Due to eyesight problems I do not do visual observing so this will be another imaging setup only. Any help or advise would be great. Thanks in advance Mark
  11. I have the QHY5L-II and the Colour ASI120MC-S. The QHY is my dedicated guide camera and use the USB3 colour camera for planetary work. I have not had an issue with the QHY, only doing a single exposure every 2-3 seconds when guiding I think the USB3 version is going to be very much overkill. If you are intending to use it for planetary as well then that is a different story. Hope this helps Mark
  12. I had another go this afternoon and even pre-processed the images again. I got a better result this time using the settings but still not something I was happy with. Looking at the RAW files I have a feeling the sky background is throwing my resulting colour off hence why I am losing some of the blues in the outer arms. I am in the process of going over previous other shots from during the winter (with darker sky) and seems to be getting a lot better results. Thanks again and I have made a note in regards the Pixelmath equation as well. Regards Mark
  13. Thankyou very much indeed. Yes the image was calibrated and stacked using the manual processes in the light vortex tutorial. I will take a another bash at the image this afternoon and let you know how I get on.
  14. Thanks for the reply. I am indeed dithering for this very reason. I did take another look at the image that I was using and think the colour may being thrown off by the fact that the sky was not completely dark. I am going to go back over some older data and see if I get better results Thanks
  15. Thanks for the reply. No I am doing all the Calibration and Integration within Pixinsight using the manual method (Not Batch) I have changed the RAW settings to enable "Pure RAW" and then debayer after calibration but before integration