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i Drew

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About i Drew

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    Astronomy, Physics, Technology
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    CA, USA

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  1. Hiya gazers, just need help here on which zoom lense I should go with for my old Canon eos 30D.my budget is $200 and I was looking on two zoom lense... 1. Canon EF-S 55-250mm IS II http://www.amazon.com/Canon-55-250mm-4-0-5-6-Telephoto-Digital/dp/B0011NVMO8 2. Sigma APO 70-300mm http://www.amazon.com/Sigma-70-300mm-4-5-6-Telephoto-Cameras/dp/B000ALLMI8/ref=sr_1_1?ie=UTF8&qid=1345831608&sr=8-1&keywords=sigma+70-300 Both are of same price range but for now I'm leaning towards the Canon 55-250. I'm planning to piggy back my 30D on my nexstar 6se and image the moon and some dso . Thank
  2. Oh so a focal reducer is like a reverse barlow? I'm guessing this will reduce the magnification as well. Will it be good for visual as well since i've read that the focal reducer was primarily made for imaging, is this true?
  3. I believe the Nexstar 6se has a 2" rear cell opening where the visual back goes in, I am considering getting the 2" diagonal for sct.
  4. I checked it out it looks like they're back ordered from optcorp.com. I recently purchased 14mm ES 82° and a 20mm ES 68° from them, I'm just thinking the 24mm is too close to the 20mm that I have that's why I'm thinking much lower power.
  5. Hmm I haven't come across that one, I probably should check it out. .Thank you!
  6. I'm glad i asked before I ordered, I don't want to spend $200+ on something that is not compatible to my equipment. i'm sure the eyepiece is a very good one but thank goodness the reduction in FOV and vignetting were pointed out those are huge factors. Thank you! But I still would like to add a very good low power eyepiece to my set, I personally like using low power since I can see more around the area but also whenever my club do a public star party once a month I like using low power because it's much easier for the people to look through my telescope. I end up borrowing my fellow members 3
  7. I've been looking to add a low power for my set and I came across these two eyepiece Baader Hyperion Aspheric 31mm and 36mm, since they have 1.25" adapter I can use both on my 6se. I just need help deciding which one would be better for my telescope the 31mm or 36mm? Unfortunately there's not a lot of choice out there that has 1.25" barrel unless I go plossl, i just like the 72° on the Aspheric series.Thanks!
  8. Help! I've been researching for a bahtinov mask for my nexstar 6se for the past hour but I can't seem to find that indicate it'll fit my telescope. i'm not sure which one will fit, please check 1. http://www.optcorp.com/product.aspx?pid=15015&kw=Bahtinov&st=2 or 2. http://www.optcorp.com/product.aspx?pid=15012&kw=Bahtinov&st=2 Or neither? Suggestion would help thank you!
  9. Quick question regarding this topic, how does the assembly works for the focal reducer using dslr? Is it Focal reducer > Visual Back > T-adapter >T-Ring > DSLR? And since I have a Zoom eyepiece can it be Focal reducer > Visual Back > Zoom Eyepiece >T-Ring > DSLR? ....ok i'll push it, does it also work for Barlow? Focal reducer > Visual Back > Barlow (5x) >T-adapter > T-Ring > DSLR? Thanks!
  10. Thanks, yes i got the low and high the other way around
  11. Ok initially I considered getting the Delos but since a lot of recommendation on ES was made I decided to fork $100++ and tried out the 14mm I got it yesterday and tested it out for a bit and I am blown away considering the light pollution and the weather last night it gave me a very nice clear view of Albireo, tried it on the moon as well and it was just awesome, the 15mm eye relief is just right for me. I'm glad I got it. Wow two thmbs up! Now here's my conondrum, I would still like to get a low power ep and get a higher power ep. Since i've decided to get a 2" diagonal for my 6se my que
  12. Hail SGLers Just want to share with you guys podcast that I listen and enjoy listening to, very knowledgeable. I love listening to thes kind of podcast because it keeps the day going really fast, I work in the office so there's plenty of time where I would feel sleepy but ever since I started listening to podcast it the pace really fast. So here are some of them I listen to... ASTRONOMY CAST http://www.astronomycast.com/ This is my all time favorite podcast, I learned a lot about astronomy from this podcast. This is hosted by Dr Pamela Gay and Fraser Cain who both dedicate a lot of their time
  13. Quick replies, intellectual, knowledgeable and friendly people in here, i like it! So far so good SGL, thank you and keep up the good job,
  14. haha that's why I liked this forum from the beginning, quick response and intellectual. Anyway, now I understand thank you for the response.. again the reason why i asked because I was asking is it was mentioned on my post where I was asking about eyepiece. Thanks guys!
  15. Hail SGLers Ok for the past few weeks now I've been on the forum I've been reading fast scope and slow scope being mentioned. Someone mention to one of my post that my 6se which is f/10 is a slow scope?... anyway honestly I am a bit confuse so please explain What makes a fast scope and what makes a slow scope? Why does one need to know if your scope is slow or fast? Is it all about how long the light travels on your telescope? Thanks!
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