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Everything posted by Dyptorden

  1. Hi again, Could anyone tell me if there are other differences between 2" and 1.25" besides the 2" offering a bit less vignetting when making photos and a bit wider FoV when watching DSO's? If I start buying eyepieces...filters... I need to know whether it is worth investing in 2" or not. And... does the 2" offer any advantage when observing planets? Thank you,
  2. cotterless45 my magnification was ~70x, and believe me, I felt the light was blinding me. At higher magnifications the brightness decreases? John you suggest to buy a UHC or and O-III filter, but as ronin said, the O-III only lets some parts of the spectrum pass, won't that practically decrease the quality? In fact this is what I don't understand... best pictures (I am interestend in observation atm) are made with all those 3 filters, H-Alpha, H-Beta and O-III. If H-Alpha only lets part of red pass, then no other color gets to H-Beta or O-III, so do the photographs use all 3? And about the black/white photos of the moon? How comes that there aren't too many yellow pictures, just as I saw the moon? Thank you again for your time and patience
  3. Hi everyone,There have been some discussions on the forum but I didn't find the exact info I am looking after.I own a 8" Dob (just recently got it, I am a junior) and I am gathering information regarding the filters I might need.Moon:I tried looking at it with 25mm and 17mm eyepieces (the only two I got at the moment). It was so bright that it blinded me.. took me few minutes for my eyes to go back to normal. So I found out that a nice filter that might help would be a double-polarized filter to decrease the brightness according to my wish.Also I found out that details could be increased if I use an IR filter and here is the first question... 1.Do I need an IR blocking filter or an IR passing filter? Everywhere I looked people only refer to IR filter but this doesn't help a newbee Another thing is that most of the moon pictures on internet are black/white.So here comes my second question 2.Are there filters that make the moon look black/white, or is it made on the PC in order to increase details? Regarding DSO's: 3.I keep hearing about H-Alpha, H-Beta and OIII.How does each of these filters influence my view? Do they help me get a colored view of the nebulae? 4.What other filters could help me get better images/details/contrast of DSO's? I've heard of UHC and some say there should be some filters that increase quality when observing from a light polluted environment. 5.Also what is the effect of a filter that blocks UV? Thank you very much, and sorry if my questions sound stupid to some of you... Carl Sagan - The Demon-Haunted World: Science as a Candle in the Dark: "There are naive questions, tedious questions, ill-phrased questions, questions put after inadequate self-criticism. But every question is a cry to understand the world. There is no such thing as a dumb question"
  4. Thank you for your answers, You told me above, about that Sky-watcher 130 In my first post, the second telescope seems similar to what you have shown me. It is a Sky-Watcher 2001P-NEQ5 which comes with an EQ-5 mount (as you have suggested it should do nice). It is exactly in my budget and has a 200mm aperture (which seems nice for observing) with f/5 (which seems the nice choice for photo). On the other side, the telescope number 1, the Omni XLT 150 has a shorter focal length which may offer me a wider field of view and a f/5 focal ratio.Yet this one has a CG4 mount which seems to be worse than the EQ-5. Should I go for this Sky-Watcher maybe? P.S.: the apo ED80 is in my budget without the mount.. When adding the mount it is too expensive... And just asking, being a refractor, isn't it worse than a reflector, when the DSO's are primary targets?
  5. And two more similar telescopes : 4. Bresser N 150/1200 Messier which comes with a EXOS-2 mount, a 150mm aperture, 1200 focal distance and f/8 5. Orion N 203/1000 SkyViewPro which comes with a SkyViewPro mount, a 203mm aperture, 1000 focal distance and f/4.9 Yet I haven't heard too many things about "Bresser", and regarding the Orion, I haven't heard too many things about SkyViewPro mount (at least compared to the CG4 or EQ-5) Again, thank you for your patience.
  6. Hi again, Recently I had a post where I asked information about a telescope less than 600e.The budget is the same,yet after gathering some more information, I decided that my primary goal is to observe and photo DSOs. For the moment I want a telescope+mount that would help me observe DSOs and later, buy a tracking motor.(that's why I didn't take into consideration anymore the refractors which seem to be planetary oriented and the dobsons which can't be use for photo too well) What I found in my country at that price would be: 1. Celestron - Omni XLT 150 which comes with a CG4 mount 2. Sky-Watcher 2001P-NEQ5 which comes with an EQ5 mount (I don't know why but this one is cheaper than the Celestron and has better aperture, and better mount... is better in everything... is it the brand only or the quality of the materials too?) also some guys recommended me 3. Celestron - Omni XLT 127 which comes just as the XLT 150, with a CG4 mount but is a Schmidt-Cassergrain and not a Newtonian.Also this telescope is more expensive (~150e more) and i doubt i can go for it. As far as I know, when thinking about DSO's, the most important characteristic is the apperture (the newtonians above 150mm and 203mm) but for photography its the focal distance (the Schmidt-Cassergrain which has 1250). I don't know the importance of the f when regarding DSO's or photography... the Newtonians have f/5 and the Schmidt-Cassergrain has f/9,84 Could you please tell me your opinion about which of these should I go for (also some arguments would help). I am opened to suggestions towards other telescopes (but I want them to be new). Thank you for your time,
  7. looks like the forum didn't keep my formatting as a table..sorry... i put the same info below: Scope Sky-Watcher 1201EQ5 - Celestron Omni XLT 120 - Bresser AC 127/1200 Messier Aperture 120 - 120 - 127 Focal Length 1000 - 1000 - 1200 Tube Length 1040 - 1010 - 1260 Magnitude 13.1 - 12.9 - 12.3 Finder Scope 9x50 - 6x30 8x50 Resolution 0.96 - 0.97 - 0.91 Focal Ratio f/8 - f/8.33 - f/9.4 Mount EQ5 / CG4 / EXOS-2
  8. Also i did find (at same price) this telescope : Bresser Telescope AC 127/1200 Messier EXOS-2 This one has better aperture than both I have presented before, but I don't know anything about that brand.. how good is it compared to Celestron or Sky-Watcher. Scope Aperture Focal Length Tube Length Magnitude Finder Scope Resolution Focal Ratio Mount Sky-Watcher 1201EQ5 120 1000 1040 13.1 9x50 0.96 f/8 EQ5 Celestron Omni XLT 120 120 1000 1010 12.9 6x30 0.97 f/8.33 CG4 Bresser AC 127/1200 Messier 127 1200 1260 12.3 8x50 0.91 f/9.4 EXOS-2 Could you give me some final thoughts taking these into consideration? (also I don't know much about the f/ ... should it be small...big...). Again I thank you very much.
  9. Thank you for your answers, but allow me to add one more question.Later I have found another similar (both from a characteristics and a budget point of view) telescope : Sky-Watcher 1201EQ5 This one, compared to the Omni XLT 120 has a better finder 9x50 compared to 6x30, a little better magnitude (0.2) and some say it also has a better mount. Should I better go for this one, or remain to the original choice : Omni XLT 120? Thank you again for your time, P.S.: maybe somebody can share his/her experience in case he used both telescopes?
  10. Also do you believe NexStar family could bring me something better than XLT?
  11. Hi, Probably you are tired receiving these kind of requests , yet me, the newbee, wants to get a telescope. I was wondering if I've made the best choice, and if not... maybe you give me and alternative. The situation is as follows : 1. I have never used a telescope before (but I am overwhelmed when I see pictures of planets) 2. I want to observe planets mainly, the sun, the moon, and last DSO (I guess I can't get too much regarding DSO's, from such a budget) 3. My budget is ~650e (or less...) 4. I chose Celestron Omni XLT 120 (in my country it costs 650e...) 5. Definately I would love to make astrophotography in future with my telescope, I own a DSLR .. but that is another story and I need to master basics before getting intro astrophoto. How do you see the learning curve regarding the XLT120 use? Can you offer me a better solution for planet watching (or nice DSO) than the XLT120? Thank you in advance for your patience,
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