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About Charic

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    Main Sequence

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    NE Scotland, 57N
  1. Welcome to the SGL. The 6" Dobsonian fromSkywatcher would be a sensible choice for dipping your toes into the hobby of astronomy, and the recommendation is based on visual use astronomy only! don't think cameras here using a basic Dobsonian telescope. The 8" will have more light gathering ability due to its larger surface across the primary mirror. The 10" even more and so on. I bought the 8" Skyliner, and all the eyepieces in my collection work admirably for my needs, however, you don't need that many. To compliment this scope two eyepieces would suffice, a 12mm and something in excess of 25m, my preference the 32mm Panaview from Skywatcher. Additional extras, there are several, but essentially a Cheshire collimation tool would be advisable to collimate the scope ( aligning the optics for best performance ) and some eyepieces that YOU find comfortable, but I have no hesitation in suggesting the BST Starguiders. Only issue I have with Starguiders, they don't produce a 6mm, so instead I've chosen to use the William Optics Super Planetary 6mm. Failing that their is the 12mm BST Starguider, which, when used with a Barlow adaptor of 'times two' (2x) It's the equivalent of using a 6mm eyepiece for 200x power/magnification when I need it, which again, this scope is capable of producing. A comfortable seat ( I uses a Drum stool, height adjustable, and I have tried the famous Tetrad finder, but prefer the basic finder scope, finding targets with 'both eyes open', believe me, it works. The 6" scope IMHO has the more basic rack & pinion focus adjuster, and although made of metal, I think the smoother Crawford adjuster on the 8" is a winner, as is the greater amount of light collected over the 6" scope. Your local conditions should be taken into consideration too. If your blessed with inky black skies and no light pollution, you may see more through the 6" than I can through the 8" from my back yard. So many issues to contend, but have a good think, take your time, there's really no rush, and keep asking questions. HTH.
  2. Oh dear... oh dear....

    Effective as a kaleidoscope "purple/orange" from your colour description.
  3. That's a reasonable price for what looks like a substantial eyepiece, however I do recall you mentioning...........
  4. Choosing my next eyepiece

    I don't have any 10mm eyepieces in my collection now (tell a lie - the supplied 10mm Modified Acromat Skywatcher, my replacement was the 8mm BST Starguider? ) If you require 120x power then a 10mm will suffice, or a 20mm EP with 2xBarlow. I tried the 10mm Tele Vue Delos, but visually the targets I was looking at, on axis, were no better than choosing one of my Starguider eyepieces the 8 or 12mm, yet the field of view and eye-relief are in excess of my 60° ED Starguiders. Same for the Baader Ortho's (classic ), athough liked by many folk, they, to me, were no better than my Revelations, same with Tele Vue Plössl's, their respected in every way, yet the shortest focal length is 8mm (for good reason!) but I needed shorter ( so I thought!). I also tried Meade Plössl's, same issues, no better than my existing EP's for my eyes on this f/6 scope. Twice the focal ratio of the Skyliner suggests a 12mm eyepiece, the scope performs admirably with this focal length (100x) with a 6mm providing (200x) power. Trial and error my friend, I hope you find what your looking for.
  5. Thats a great price, even cheaper than the one in AB's report? It's also the very first scope I considered, so I would love to peer through one, but I don't think the TAL will better what I have already. Its probably a lot more practical, size, shape, portability, but will refrain from buying on this occasion.
  6. I could have reserved comment if the latter picture was included with the first! What you have declared is a viable option for some folk, but like your own conscience, I felt the need to point out the finer details, omitted from your original thread. You have rectified that omission, its now down to the end user, as to which course of action they choose.
  7. I thought there was more to them? in particular, the long spacers on the collimation knobs, and for a little extra modification, you can use springs instead of 'O' rings! I'm all for getting items cheaper, much cheaper, but it's in the detail, and without those spacers, I'm sure your going to have an issue, not that you couldn't modify a spacer or two? The BK's are something I have considered on many occasions, but the reach of my scope is an issue, my arms are not long enough, though if I Barlowed my Laser, then reach would not be an issue, but with eye looking into the tool/focuser, It's a no-no for me, plus I hardly collimate, the Star test looks just fine?
  8. That just took me back 4 Years? the frustration of the thing, although I only suffered a few nights until the Dob arrived.
  9. Sorry Olly. I read that the image produced in my scope with DSLR attached would equal 42 magnification, rather than 42 times something? It said "divide the telescopes focal length by the the diagonal of the sensor" and for my system, this results in 42x.
  10. Been reading some more and think I'm sorted now, maybe not! The Skyliner will act as a 1200mm lens, and will provide a magnification in my DSLR of about 42x? This equates to the focal length of the scope divided by the diagonal of the camera's sensor? Therefore, I believe that if I need more magnification, a Barlow or an eyepiece is required. Said I was no expert, but always willing to learn.
  11. Dark Skies Wales - Heads UP

    ......its on iPlayer, just about to view.
  12. Its funny how something jumps out at you when you re-read something, cheers brantuk! Now I'm far from being the astrophotographer professional, but I now know why my early images are smaller than I had anticipated, some Years ago when I first got my Dob and first attached my D5000 thinking that by using my scope I was actually using a 1200mm lens ? As stated, the telescope captures light photons from the target and focuses this light to form a 'real' image at the focal plane, that's it! Therefore, the scopes image at the focal plane would be the same, would it not, as if you were looking at it with the naked eye, ie. no magnification and very small. The introduction of the eyepiece allows you to see this image in detail, and using the formula F/f=X derived from the focal length (F) of the scope and the focal length of the eyepiece (f), you apply magnification (X) to the image..............pretty simple. I often mention that eyepieces alone, especially those expensive premium ones, can't improve the details beyond what the scope itself provides, but if that image is good from the start, the eyepiece can improve the field of view, and enhance the eye-relief, but to think its taken me over three Years to just realise what I was trying to achieve back then.........laughable!
  13. F4.6 vs eyepieces

    You must find that the present eyepieces work well on your 12", which also settles my mind, as I wish to use my present eyepieces, should I upgrade. If not, I too will have to reconsider, but on axis with a properly collimated scope, visual only, I can't see there being an issue for my needs, yours neither ( at least I hope not!) You'll know for sure soon!
  14. Setting up the HEQ5

    I started out with a basic GEM mount and decided never again, too much adjusting, not enough viewing? The Dobsonian fixed that issue, no regrets. I would only consider a better EQ mount if/when I proceed down the astrophotograpy route to mount my ED80 or ED100? Personally I would just get a bigger Dobsonian, you know they work, the bigger they are, the better the detail, and no technology to go wrong!!
  15. tuckstar, I have an 8" 200P Skyliner, its an f/6 (f5.91) scope. Your f/7 might be a typo!