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Dellis

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Posts posted by Dellis

  1. Just a quick question regarding Computerised Dobs.

    I am well aware of Dobsonians not being the best tools for astro photography, well for DSO's anyway. My question is, are Goto or Synscan dobs a different story ? As from research into these models and noticing they will track objects for you, would they then be suitable for A.P. ? Maybe a silly question but have always wondered about this. Some claim to be great A.P tools, but thought I would ask on here, (horses mouth n all that). Thanks for any replies.

    A dob or any other sort of altazimuth mount will track but the field of view will rotate thus each image taken will be slightly different so stacking is not really practical, with an equatorial mount mount the fov does not rotate thus each image covers the same area of sky and the whole image can be stacked.

    Dave

    • Like 1
  2. I'm off friday and monday so will be packing on friday especially as Buxton is less than an hour from me. We were away in the tent last weekend and it's been hanging in the workshop to dry out so I've packed that this evening. Will get beer en route and haven't yet decided whether to cook or not but will have my stove from brewing up either way. I've had a couple of practice runs with the bottle rocket and have to say I'm impressed with what they're capable of :grin: so that should be fun.

    Looking forward to meeting some new folks over the weekend.

    Dave

  3. My vote is to go the Dob route, loads of fun and inch for inch less expensive too. I started with a 5" Newt then moved on to an 8SE and although the optics were excellent the tripod wasn't that substantial so the slightest tap set the scope vibrating. Another thing to consider is that the 8SE, as with all SCT's, doesn't offer the wider field of view that you're looking for. From the 8SE I went to a CPC1100 which would get my vote for the best SCT available for visual only observation due to the excellent optics, 11” light grab, fast setup and excellent tracking however, this still won't give you a wider FOV.

    Looking for a widefield solution and to compliment the CPC1100 I bought a 4" refractor with an EQ5 without go-to, I couldn't believe how much more enjoyable and rewarding finding objects for yourself is rather than relying on go-to. I enjoyed the non go-to refractor so much that the CPC1100 wasn't getting used and so I sold it but I was then missing the light grab so bought myself a 12" Lightbridge. The Lightbridge has been the best money I've spent on a scope by far, the views are excellent (clouds permitting) and the hunt is a big part of the enjoyment! In a nutshell I would strongly recommend going the Dob route and if you must have go-to they are available. As you said you could keep the Mak for travelling and use the Dob at home, having said that the Lightbridge is pretty portable once broken down into its component parts. A 12” Lightbridge can be had new for under £900 and a 10” under £600 both excellent value for money and leaving you spare case for a couple of EP’s.

    Whatever you go for I’m sure you’ll enjoy it.

    Dave

  4. I moved to a 12" truss tube Dob from an SCT so regular collimation has become part of my observing prep. At first it was a bit of a faff but after the first few efforts everything seems to fall into place and now what I considered a nuisance is really no trouble whatsoever. As has been said stick at it and, with time, it gets much easier.

    Dave ;)

  5. Alternatively you could invest in one of these http://www.amazon.co.uk/Leifheit-Ironing-Stool-in-Silver/dp/B003LQP7J4/ref=sr_1_2?ie=UTF8&qid=1336026672&sr=8-2 - fairly cheap @ £26 and Ideal for observing at the side of a dob though they do lean slightly forwrad which is fine for observing and will save your back but you wouldn't want to be sat reading a book on one for hours on end

    I have that chair and it works well for me in combination with my 12" dob.

    Dave

  6. When it comes to the GPS just turn the scope on and wait for the correct date and time to appear (this may take a couple of minutes), when you first turn it on it will show the date and time when it was last turned off. Three star alignment never failed for me with both GoTo and tracking working very well.

    Dave - an ex CPC1100 owner

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