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Posts posted by Dyptorden

  1. Apologies - I should have read your initial post more thoroughly :rolleyes2:

    Sounds like you have a 4x Powermate ?

    Your 17mm powermated gives 282x which from my experience is really as much as is useful with an 8" dob to be honest. Most of the time 200-240x would be better.

    The 400x that the Powermated 12mm would give is very rarely going to be useful. I don't use that sort of power much even with my 12" dob.

    Completly agree about the 12mm as I said in the previous post, but I believe that a 14mm (equivalent to 3.5 with Powermate -> 342x) would be a nice improvement over the 17 which brings me nice views (of planets). Would it be too much magnification with the 14mm?

  2. May I ask what other eyepieces you have? maybe you need to look over the whole picture?

    This is a good guide about what focal lengths you should consider:


    A 12-15mm eyepice works very well with your scope(assuming a f6), but most often not together with 4x powermate, maybe in the extremely good seeing conditions which happens rarely.

    What I own now are 2 eyepieces having 52° :

    Celestron Omni 17mm

    SkyWatcher Let 25mm

    I want an improvement for both dso and planets. Jupiter for example, was beautiful with the 17mm ("converted" to 4.25 through powermate) and I want a higher magnification for planets. The 12mm would be the ep that would bring me to the "maximum theoretical" magnification that the telescope can carry. I avoid the 12 and that is why 14mm ES 82° would fit best i believe (according to answers on forum) - it would have a fov close to the 25mm LET and a 343x for planets. The high fov will also help me keep planets in sight more before having to re-position the telescope.

  3. Some good suggestions above.

    I'd add the Maxvision eyepieces to the recommendations, if you can get them. I've been using the 24mm 68 degree Maxvision with my F/5.3 12" dob and my other scopes and it works really well. My usual eyepieces are Tele Vue and Pentax but the Maxvision fights it's corner very well for the moest investment.

     Thank you for the Maxvision suggestion John, but i need an eyepiece in the [12;15] interval and Maxvisions go from 20mm to more.

  4. Hi everyone,

    I intend to buy (for my 8' Dob) an eyepiece for general usage (both DSO and planetary through 4xPowermate) - meaning 12-15mm and a wider angle than the Plossls. Has anyone made a comparison between the Baader Hyperions and the Celestron Luminos series? (Luminos is at the top of my budget). Also other similar eypieces? There have been some similar discussions here and there but no comparison between the Hyp and Lumi.

    Best regards,

  5.  So there you have it, the most popular optical system used by our imagers, the only limitation that I can see is the price, something just over £280 for 2" versions and if you want the dedicated camera adapter, then you can add on a further £40 or so :)

    I know it, I own the 4x 2" one and the camera adapter. But my eypieces are Rubbish, and I wanted to know if it's ok investing in a large FOV EP.

    Thank you everyone for your answers

  6. I have to admit I like the larger sizes but most of if not all of my planetary is done with 1.25 inch eyepieces.

    I can't afford too many eyepieces at the moment, so I use at the moment my 25mm and my 17mm with a 4xPowermate 2" to get a ~6mm and ~4mm. Bought the Powermate 2" for distant-future astrophoto. and soon I will also buy a threaded 2"-1.25" reducer. You can use a 2" filter with a 1.25" eyepiece, but not the other side.

    • Like 1

  7. The parts catalogue from the site you linked to shows for both Canon and Nikon. I'd contact the vendor and ask for confirmation.

    I've contacted Baader asking them whether they have a similar product for Nikon, and their answer was:

    "Sorry - no.

     Nikon requires a shorter T-Ring - there is no space left for this solution like we make for Canon.

     Best regards,"

    So I am still looking for a workaround... or a solution from another brand.

    Still nobody has ideeas?

  8. Thank you Bizibilder, I know about DDS but I was looking for alternatives, just for my curiosity.

    Registax can also stack pictures.Version 5.x supports *.RAW files. Yet I find no location for the BIAS.

    And one more question regarding the  DARK or FLAT files : I can see that the program supports BMP and PNG but no RAW. Am I missing something? Or is it made just for those two file types?

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