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Farnsworth

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About Farnsworth

  • Rank
    Nebula

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  • Location
    Germany
  1. I just noticed that the picture is a little too big and thus deformed, sorry
  2. Here is a picture of my eyepiece case. I use it with an 8" f/6 dobsonian and I feel really comfortable with this relatively small selection of eyepieces.
  3. Oh nice, thought it was f/5. However, with this Scope price becomes an issue, with a dobsonian mount it's more than 1600€, way more than I intended to spend. I guess I will just get the 10" and if coma bothers me too much, I'd buy a coma corrector. Is coma actually very distinct at f/5?
  4. Thanks for your replies. I should've mentioned that I can't carry 12 inch, there simply isn't enough space in my car. I'd rather have an 8 or 10 inch which I can take to a dark site... CS Yasin
  5. Hello everyone, I recently sold my 8" f/6 and now I'm racking my brain over whether I should replaced it again with an 8" f/6 Dob or a 10" f/5 Dob. Don't get me wrong, I don't regret selling my old scope, since regardless of whether my new scope will be 8 or 10 inches its mirror will be better than my old one's. Not that its mirror was awfully bad, but I'd like to have something really good with min. 0.95 Strehl ratio and quartz substrate. Surprisingly the overall price difference between 8 and 10 inch would only be around 100€ (8"~750€, 10"~850€), which kind of screams for the 10". However, I'm still not sure what to take... In many comparisons of 8" and 10" Newtonians I read that there is only a minor difference in brightness and that you don't gain any noticeable details at DSO. I should mention that I use the scope mainly for Deep Sky observing. On the other hand the 10" also has drawbacks: it's obviously heavier and larger (still manageable though) and it shows more coma - I have no idea to what extent it impairs the view though. In terms of eyepieces most of mine should work at f/5, I only had to replace the lowest power eyepiece. All in all my question is whether you think that the larger aperture of the 10" f/5 is worth the drawback of coma and that it demands better eyepieces. It surely is a thing of personal preference afterall, but I'd like to know your opinion. Has anyone maybe ever done a side by side comparison? CS Yasin
  6. Thanks for your replies! I should add that I don't own the 10" f/5 yet. I'm planning on moving from my 8" f/6 Dobsonian to a bigger one. I can't handle more than 10" since the space on my car's back seat is limited ;-) I actually own a 13mm Nagler T6 and it is indeed my most used EP for DSO. With my f/6 Dob though, I felt like the exit pupil wasn't bright enought to observe galaxies. With the f/5 Dob it might be different... For higher magnifications I use the 5-8mm Speers Waler Zoom - great eyepiece that covers the whole range with a constant AFOV of ~84°. My overview eyepiece is the 34mm Explore Scientific, which I obviously can't use at f/5. Here the problem is similar, I'm not sure weather I should replace it with the 27 Panoptic or 28mm Maxvision. 26 or 31 Nagler would be to expensive. I should also mention that I once owned a 16mm MV and it was performing great at my 8" f/6 Dob, but as you told me it isn't that good at f/5 anymore. CS Yasin
  7. Hello everyone, I'd like to get a ~20mm eyepiece for a 10" f/5 dobsonian, mainly to observe open clusters and galaxies. Originally I planned to pick the 20mm Maxvision, which probably is equivalent to the discontinued 20mm Meade SWA. However, I have the opportunity to get a 19mm Panoptic for around twice the price of the Maxvision. Has anyone ever compared those particular eyepieces or maybe the panopics and maxvisions in general? Does the Panoptic provide a better image? If so, do you think it's worth the price difference? Thanks and CS :-) Yasin
  8. Hi, it depends on what focal lengths you'd like to cover with the zoom eyepiece. I personally have a 5-8mm Speers Waler Zoom for higher magnifications with my 8 inch f/6 dobsonian. It's a great Zoom eyepiece with a constant appearent FOV of 84°. However, it weights almost 700g and might thus cause balancing issues on smaller scopes. Also you can only get it on the second hand marked and even there it mostly sells for 200€+. CS Yasin
  9. Hello everyone, I'm thinking about getting a Skywatcher Heritage 130/650 (http://www.firstlightoptics.com/beginner-telescopes/skywatcher-heritage-130p-flextube.html) as a small budget travel dobsonian and an more manageable alternative to my 8 inch f/6 Dob... I've got a Speers Waler Zoom 5-8mm, which I'd like to use with the Heritage 130p. However, I doubt that the small dobsonian's focuser will carry the 600-700g of the SW Zoom. Does anyone have any experience with the Skywatcher 130p and eyepieces of 1-2lbs? CS Yasin
  10. Thanks for your replies Well, the mountain range I meant is the "Eifel" in western Germany. Since the mountains there usually don't exceed 500 metres above sea level, the term "mountains" might be misleading However, it's a quite remote and dark site. CS Yasin
  11. Hi everyone, I've read in the forum for a few months now and I found it really nice and helpful. Especially in completing my eyepiece case you helped me a lot, so I hope to contribute a little for the future. I preferably observe visually with an 8 inch f/6 dobsonian. Unfortunately I mostly have to observe from my backyard with quite a bit of light pollution. However, from time to time I get to a really dark site in the mountains some 20 kilometre away to do "serious" deep sky observing. During the past weeks it permanently was either foggy or cloudy and I wasn't able to test my newly purchased overview-eyepiece at all, no surprise . Today it doesn't look that bad though - so please keep your fingers crossed Clear Skies Yasin
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