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JudeHS

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About JudeHS

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  1. So I was wondering why a telescope eyepiece and camera lens behave differently when it comes to focal length and magnification. I don't have any experience with camera lenses but from what I understand a longer focal length will result in a smaller field of view. However, with a telescope eyepiece, a shorter focal length will result in a bigger f.o.v. Any ideas as to why this is - I'm guessing it's to do with the telescope and camera being different?
  2. My Barlow budget is up to £60 unless there is one I should invest in. I think the zoom + Barlow combo would be good as I only have 9mm and 25mm eyepieces at the moment. I have been recommended the Opticstar XL 7.2-21.5mm and Baader Q 2.25x and they fall within my budget so I will take a closer look at them.
  3. Thanks for all the advice I appreciate it! The Barlow I was looking at states that it "is ideal for use with low powered eyepieces". I guess 9mm isn't a great match for this Barlow so perhaps I should buy another eyepiece. The 6mm Orion Planetary seems like a good choice for me.
  4. I see two particular ones : https://www.rothervalleyoptics.co.uk/antares-15x-twist-lock-barlow-lens-125.html https://www.rothervalleyoptics.co.uk/antares-2-16x-barlow-lens-with-twist-lock.html The 2nd is a bit more expensive, is it worth spending the money (it costs £23 more than I paid for my eyepiece) or should I just go for the cheaper one?
  5. I have a 1200mm focal length, 8" Dobsonian (f6) and 9mm x-cel eyepiece. I was planning to look at Jupiter and Saturn but first I'll need to either buy a higher power eyepiece or a Barlow. I could buy a 2x Barlow but maybe that is too high and I would be better off getting a new 5/6mm eyepiece or even a 1.6x Barlow?
  6. I would like to view sunspots and transits as cheaply as possible on my 8" Dobsonian. A factory made solar filter will cost £100 in the UK so I am going to make my own using cardboard and solar film. Which film would suit my reflector the best? https://www.amazon.co.uk/Solar-Filter-Telescopes-Binoculars-Cameras/dp/B00DS7S52W/ref=sr_1_2?s=electronics&ie=UTF8&qid=1535907650&sr=1-2&keywords=solar+film+oaks or https://www.bristolcameras.co.uk/p-explore-scientific-solarix-solar-filter-film-a4.htm or https://www.ebay.co.uk/itm/Baader-Planetarium-A5-solar-sheet-film-for-telescopes-binoculars-or-viewer/123326099564?epid=23018687911&hash=item1cb6cef06c:g:c6gAAOSwPhdVAZWC Would it be better to buy smaller pieces of film as it is cheaper and I heard in the day seeing conditions wouldn't be good enough to make use of all my aperture anyway? I could use cardboard to reduce the amount of light coming in similar to this Orion filter https://prnt.sc/kpqs02
  7. Thanks for all the answers... yes I do believe it was just very out of focus. I realised last night I tightened a screw to prevent the focuser from moving and I will check tonight to see if that is the case. I certainly hope so!
  8. So I have used my telescope once already, I saw a double star through it and it was clear. Today I got it out again and tried looking at the moon, however, I do not yet have a moon filter for my 8' Dob so it was too bright. I played with the focuser but it remained a blurred mess. I then looked around the sky but could not see anything but a strange image that appeared to look like the bottom mirror? Depending on the angle I could see two or more of the image. It could be a reflection (I have linked a picture). I don't know what changed that means I can't see anything... it could be the focuser but I twisted it both ways and nothing appeared. I used both my 25mm Plossl and 9mm xcel x eyepiece but still the problem remained. I did leave it out with the dust cap on but no eyepiece in (accidentally) maybe some dew got in somehow? I have not hit it very hard for the record. Ideas appreciated.
  9. thanks for all the info! In your post, you said the views from 9.55mm to 3.2mm were most effective so should I also buy a decent low power 18mm eyepiece or still use the zoom Ep but without 2.25x Barlow?
  10. yh i just use amazon for reviews I'll buy from FLO
  11. I had not seen that before! Thanks for sending it. In the post, it said the views from 9.55mm to 3.2mm were most effective so should I also buy a decent low power 18mm eyepiece or still use the zoom but without 2.25x Barlow?
  12. what would be a good zoom under £100... I was looking at this https://www.amazon.co.uk/Seben-31-7mm-8-24mm-Telescope-Eyepiece/dp/B00663XV8S/ref=sr_1_1?s=electronics&ie=UTF8&qid=1533896290&sr=1-1&keywords=zoom+eyepiece
  13. So I have the XT8 Dobsonian (It is f/6) which comes with a 25mm Plossl. I was thinking of buying a decent 25/30mm to replace the Plossl and another 9/10mm maybe the x-cel lx, luminos or PanaView. Then buying a 2x Barlow so I have a good range or EPs at 25mm, 12.5mm and 10mm. How does that sound?
  14. Hi, I'm going to buy Turn Left at Orion to help me out as I'm a beginner. I see that the current edition is from seven years ago but a new one is coming out 31st July. Would it be worth waiting to get the new one or will not much be different between them? Thanks Jude
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