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Reeny

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Everything posted by Reeny

  1. Yes - I think they were called shorties - it was the version with the camera threads on the end. As a 2x barlow, it was so bad that I cut it up when I needed parts to make adaptor bits & bobs, and was left with the removable end piece. The revelation 2x barlow has never let me down. My efforts above were in daylight focusing on distant trees. I had the binoviewer first light tonight on the crescent moon. And wow, it was worth the effort. With the supplied 1.85x barlow I could get focus, but there was a fringe halo of rainbow colours trying to come through on the edge of the moon = the set-up was difficult to focus, and never really sharp enough. Time to roll out the Revelation 3-element 2x Barlow. This gave a sharp focus, no edge colours, no shimmer from the atmosphere, and a massive magnification. It had the wow factor, so job done. When I tried the barlow and 16mm Maxvision 68-degree without the bino's - I got lots of shimmer. My guess is that the brain will cancel out the wobble due to atmospheric conditions when using the bino's. Ali express have 0.5 focal reducers for £4.69p with the sellers discount, so it would be rude not to buy one. It should be here in 4-weeks time.
  2. A quick update on the Binoviewer. They arrived with the expected 20% import duty, well packaged in a cardboard box - no bag or aluminium case was advertised, so all good so far. The cost with the included 1.85x and 3x end piece barlows = £67.90p plus £21.34p import duty = £89.24p, Two 23mm cheap eyepieces (at £5.78p each) bring the total up to a very reasonable £101 The Skywatcher 200p dob reaches focus with the 1.85 barlow only. The 76mm x 700 newtonian needs the 1.85x and a skywatcher 2x barlow endpiece to extend the focal length. Magnification options are going to be more restrictive than I thought. Advice for gaining focus without a massive barlow magnification would be appreciated. I had hoped to have nice wide 23mm views. But I am stuck with a single magnification for each scope - 100x on the 200p / and over 100x on the cheap 3-inch Newt. Weirdly, the dob focus appears to be: too short with no barlow / just right with the 1.85x / too long with the 3x barlow Good points They are very comfortable and relaxing to use. They are good quality kit, similar to the BST / OVL version. With lots of independent focus on each eyepiece holder - about 12mm adjustment. So you can lock the scope focus and use the 2x eyepiece adjusters to fine tune if required. Bad points Needs the additional 1.85x Barlow for most Newtonian type scopes to reach focus. They add weight - I need to tighten up the focus tube tensioner screw to stop it slipping down. You may need 2x good quality eyepieces to get the best out of the binos = double the cost
  3. Ali-Express should be able to deliver to Oz if you want a set of cheap binoveiwers to get you started. There is a sale on at the moment, so I ordered a set which are very similar, or the same as the BST Binoviewer. $130 Australian dollars, with a further money off voucher available from the seller if you click the right button, and $4 US discount voucher for new Ali-Express customers https://www.aliexpress.com/item/Free-shipping-Celestron-astronomical-telescope-eyepiece-double-binocular-head-clear-binoculars-special-accessories/32857924895.html?spm=a2g0s.9042311.0.0.6d9f4c4dmNVhwa I also bought 2x 23mm 62degree eyepieces for £6.60p / $12.20 Au https://www.aliexpress.com/item/SVBONY-Aspheric-Eyepiece-Telescope-HD-Wide-Angle-62-Degree-Lens-4-10-23mm-Fully-Coated-for/32788041500.html?spm=a2g0s.9042311.0.0.378d4c4dckvHEL Focal reducers are also available - but I am going to wait and see before buying https://www.aliexpress.com/item/SVBONY-1-25-Focal-Reducer-X-0-5-for-Astronomical-Telescope-Thread-M28x0-6-for-Astronomy/32809751148.html?spm=a2g0s.8937460.0.0.57ed2e0eIxkh3j I don't expect these to be the best kit available, but the package should light up the views of the moon on our little 76x700 Newtonian travel scope, and on Jupiter through the 200p Dob.
  4. Get anything but the £21 Seben 7.5-22.5mm Zoom eyepiece. They are made with plastic internal parts, including the bottom two lenses in the Zoom mechanism.
  5. I have this when using doubled up moon filters, which is most of the time. It appears as a reflection of my eye ball. Either 2x polarised filters on the moon, or 1x ND and 1x purple tinted moon filter on Jupiter can cause the problem. It could be a combination of the filters and the eyepiece. I have an 11mm ES 82 degree, but I can't remember which eyepiece causes the problem, or whether it was with, or without the 2x barlow. The solution was to move my eye position nearer to the eyepiece, mount the second filter further away from the first on the 2"-1.25" adaptor, then simply to try to ignore it. Either way, it doesn't bother me any more.
  6. It will be this one. https://www.amazon.co.uk/AmazonBasics-Tripod-Pistol-Inches-Adjustable/dp/B00CF1LS94/ref=sr_1_sc_1?s=electronics&ie=UTF8&qid=1479339889&sr=1-1-spell&keywords=tripod+pistrol+grip I got the Ravello branded version for £43 on a special offer which was highlighted on this forum. It works well, and feels solid with the Revelation 15 x 70's, so it will be fine with the OP's 20x 50's
  7. I bought an 8mm BST late in the game after the positive recommendations here. It's horses for courses. Initially I didn't like it due to the blackouts. I was finding it difficult to get into a comfortable viewing position with the eyepiece. It seems to be better now that I am used to it. Note: Alan will take a customer return back for a full refund if you don't like the eyepiece and send it back "as new" no questions asked - you pay postage. But if I have a Celestron X-cell LX that works, and you are happy with it, why change a winning formula. Trying other peoples gear out might help you to determine what suits your needs, and what is comfortable on the eye. Some people like the BST's, some like Televue & Pentax. For me the Explore Scientific 82 degrees are my favourite eyepieces. If you ask ten people, you will get 10 different answers.
  8. I have one, it is a good enough eyepiece once the scope has been collimated properly. I used mine in the 200p Dob f5.9 as a tester before getting the 6mm Delos. Then I moved it on to use with the 3-inch refractor f9, and here the scope was the weak link until I repaired the focus tube. The 6mm works well now that I have the 2nd hand metal TAL focuser fitted as a replacement to the rubbish plastic tube effort. Good collimation seems to be much more critical with these EP's. The 66-degree view is nice to have at higher magnification on a manual AZ type push/pull mount.
  9. Go for the ES 11mm, the extra 22 degree view is free. I have the 11mm ES 82o which I use at 109x / and barlowed to 240x in the 200p dob. The ES 82 is excellent. And comparable to the 6mm Delos I use at 200x Eventually I plan to buy the 6.7 ES (or 14mm barlowed) to replace the 6mm Delos.
  10. This has been the best I have seen it in over 12-months. It's nice to be back out again.
  11. A blue tint helps. I bought a blue/purple tinted moon filter from amazon - it was weak as water for the moon, but great for Jupiter. The blue tint tends to bring out the brown bands, and darken the red spot for better contrast. It works really well on the 8" Dob, along with a single polarised filter to dim the view. If I need to stop down the brightness even more, there is the option of fitting a second polarised filter, or replacing the end cap onto the tube, minus the 2" inspection hatch (or whatever it is called) I have tried the no filter method to avoid the many layers of glass - but always end up with retina burn.
  12. The top lens is glass - but the 2x movable lenses are definitely plastic, held in by a cheap plastic collet - as above. The zoom assembly has a little bit of backlash - but is well made otherwise. It is a shame that they used plastic for the most important components - one wipe with a lens cloth and they are scratched beyond repair. This is £20 I could have spent elsewhere with better results.
  13. I have a 3" reflector 700mm x 76mm, and can sometimes make out the 2x brown coloured bands on Jupiter, but nothing else. You are lucky to be able to see the red spot. I need to use the 200P dob for the finer detail up to 180x magnification. The 3" can only manage 90x mag with a crystal clear image. Once near to 100ish magnification, the 3" starts to go blurry, and the tripod vibrates too much for a crystal clear view. At 400mm focal length, your 10mm will give you 40x mag. To get up to 80x - 100x, you will need a 5mm to 4mm eyepeice (or barlow the 10mm) I would invest in a decent eyepiece which can also be used on your next scope.
  14. The best view I ever had revealed the surface shading (which looked like an outline of Africa), with lighter patches visible at the poles. I can't be sure - but the detailed view was likely to be at 165x mag. My last view of Mars was on 11th March 2013, at 240x mag. I can still remember being disappointed at the lack of detail due to the unfavourable seeing conditions. Size isn't everything. The 6mm should be good enough for Mars. The 4,7 will come into it's own for the moon, and for the twice a year occasions when the seeing conditions allow. e.g. Jupiter can be stunning for 2 seconds at 240x if you wait long enough.
  15. My apologies, I was away checking my 2.5x barlow when you replied Goat. The Baader should be a good-un with the removable 1.3x element.
  16. The Revelation 2.5x Barlow is 3-element, and I believe it is a much better Barlow than the other two you have mentioned. The disadvantage is that there are no threads on the 2.5x barlow for 1.25" filters. It would be easier for me to swap eyepieces when observing the moon or nebula if I could leave the filter in place. Saying that - a 2" Barlow won't take the 1.25 filters either. Have a look at the £55 BST 3-element 2x Barlow. http://www.ebay.co.uk/itm/BST-Starguider-1-25-Short-2x-Apochromatic-3-element-Barlow-lens-/381210448281?hash=item58c1e9d199:g:t40AAOSwv0tVGUHb It makes the Revelation seem like a bargain at half the price.
  17. You need to see one in the flesh before placing an order. The 250P is a big beast. One of the forum members (Big Nev) explained how his gear worked, and ran through the do's and don'ts. The 200P on a tripod is massive, and heavy. I opted for the dob for a smaller storage space - it fits in a corner of the room. The quick assembly - it never comes to pieces, so it is always ready to go. Lightweight - I can lift the 200p buy myself, and the base just about fits through the back door. And value for money - £250 at the time for the 200p / £400-ish for the 250p If the Revelation scopes were available at the time I would have bought one for the 10:1 focus, and a few other upgrades compared to the Skywatcher. The 250 10-inch solid tube Revelation scope is £399 / 300 12-inch is £550
  18. Hello Nightskies, I have the 200p dob and nudging is not a problem until you reach the higher magnifications around 200x I found that the lower mags are tolerant of cheap eyepieces, but higher mags need better quality optics, and a wider field of view for the nudging. My favorites are: Maxvision 16mm barlowed to 165x (68o) Delos 6mm at 200x (72o) Explore scientific 11mm barlowed to 240x (82o) For wide field I use a 42mm Revelation 65o But the exit pupil is around 7mm, and too big. The 30mm Revelation would have been a better eyepiece for the 200p. The scope is the cheap bit It is the eyepieces which will cost the most money. Enjoy the views.
  19. I have given up trying to cool the scope down Alan. British weather at dusk - clear skies, good forcast = scope outside for an hour or two (sometimes under a barbecue cover). 1-hour later - hazy skies, lots of dew, dark clouds on the horizon = no decent viewing, go back to the TV. 2-hours later - patch cloud, lots of mist in the streetlights = no viewing, take the scope back inside to warm up and dry off. Those hazy nights are when the 6mm Delos fails to deliver, but the lower magnifications can sometimes cut through the invisible moisture in the air. 6mm is an unforgiving eyepiece size in the 200P dob. The skywatcher 66 degree just doesn't work for me, with my scope (Disclaimer - other combinations of people / scope / or eyepiece may perform better)
  20. The 6.7mm is £26 more than the Williams at £105. And they take a bit of getting used to for eye placement. http://www.firstlightoptics.com/explore-scientific-eyepieces/explore-scientific-82-degree-series-eyepieces.html The people who recommend the Williams have GoTo - so the wider view is not needed to track the target. Or they use the eyepiece for planets, and small field of view objects (double stars etc)
  21. The Williams Optics are recommended over in the eyepiece section of the forum for sharp views. I use a 6mm Delos 70degree, but often have to drop back down to my Maxvision 16mm barlowed when the seeing is poor (165x magnification). 20% of the time I can use 240x / 50% = 200x / 90% = 165x See if you can try a 6.7mm ES 82 degree (179x mag). The wider view will save you nudging the scope all the time to keep the targets in view. It makes navigating around the moon much easier as well. My 11mm was £110, but I think it is worth it. I nearly sold the Delos to get the 6.7mm ES The planetary experts will favour the Williams over the ES for sharpness, but I like the comfort of a wider view. The cheaper Skywatcher is likely to be be a poor eyepiece in your scope. Go for the Williams as your first choice.
  22. I should have clarified. If the seeing is bad - it struggles. The Skywatcher 66 degrees has poor sharpness whatever the seeing conditions are.
  23. Same here, I paid £32 from a UK shop online, and expected something better than the Revelation plossls - I was wrong. The Revelation is a much better / clearer eyepiece at £23 + post. When the conditions are right, I can barlow the 9mm Revelation up to 290x mag in the Dob, and get the same amount of fuzzyness on moon craters that I have with the 6mm at 200x The 66-degree wide view is worthless if that view is blurry and smudged. Saying that, I would expect a slower scope to give better results. Mak - See if you can borrow a pair of Revelations Or even better, Astro boot have brand new GSO 9mm and 12mm Plossls in at the moment, around £15 each.
  24. A heads up. If you missed the Ravelli tripod deal earlier this year - amazon.co.uk are selling them under their own name. These are ideal for binocular viewing. You will need a sturdy 90-degree bracket. I use mine with the Revelation 15x70 bins £35.95p for the "Amazon Basics" none branded version, without the carry bag http://www.amazon.co.uk/AmazonBasics-Tripod-Pistol-Inches-Adjustable/dp/B00CF1LS94/ref=pd_sim_421_6?ie=UTF8&dpID=31nurmQSeeL&dpSrc=sims&preST=_AC_UL160_SR160%2C160_&refRID=1A96KWAGAS9YGHSJ3NYJ It is exactly the same as the £54.27p Ravelli APGL4 (with carry bag) at full price http://www.amazon.co.uk/Ravelli-APGL4-Professional-Tripod-Adjustable/dp/B003SQEAY0/ref=sr_1_fkmr2_2?s=electronics&ie=UTF8&qid=1414409468&sr=1-2-fkmr2&keywords=Heavy+Duty+Bogen+type+Ball+head
  25. I have the 6mm which is very close to the two scopes maximum magnification (200P dob / 76x700 cheap 3" refractor) I found it to be an awful eyepiece. However, I keep trying it again and again in case I missed something first time around. It might work well in slow scope - but it struggles at F5.9 in the dob (saying that, the Delos struggles sometimes). Maybe I'm just a fussy type of old bloke, or maybe the 6mm is bit of a dud. The benefits are good eye relief, wide views, solid construction. They are worth a try for £16 each from Ebay HK. They are not so good value at £32 via a UK supplier.
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