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parallaxerr

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Everything posted by parallaxerr

  1. Liking the new theme. The bottom navigation bar is a great improvement
  2. Open box but new and unused Orion Atlas 8.4" pier extension. Same as SW EQ6 but in black. £65 including UK mainland delivery.
  3. Vixen A80Mf 80/910 F11.4 achromatic refractor. Purchased new in March 2020. Manufacturers specifications: Aperture: 80mm Focal Length: 910mm Focal Ratio: f/11.4 Resolving Power: 1.45 arc sec Limiting Magnitude: 11.3 Light Gathering Power: 131x Finder Scope: 6x30mm Finder; Field of View 7 ° Adapter Thread: 42mm/ For T-Ring Visual Back: 31.7mm Push Fit 33.8 (860mm) Optical Tube Diameter: 3.5" (90mm) Optical Tube Weight: 5.5 lb Accessories: PL20mm; PL6.3mm; 31.7mm Erect Image Diagonal; Dew Shield; Tube Rings and Dovetail Plate Excellent condition, clean optics
  4. New and much needed grab and go frac! Cloud cover and rain has been ridiculous recently with only small windows of opportunity, so this little fella should get some good use.
  5. I've run out of things to sell. At this rate I'll have no scopes left, but I'll have the best mount ever!
  6. Happy to report that tonight's first light with the Omni 120 (since collimating) was a great success! Much better snap to focus, scope took higher mag, sharper image.....allround better EVERYWHERE! Star test showed better results outside of focus where it was mushy before and X400 on a bright star showed a very nice airy disc. I tested out my new 27mm eyepiece on Andromeda and despite the bright sky due to the Moon rising, I could definitely make out more than previous attempts. Star of the show was Mars. The scope held X200 rock solid for over an hour before dew started to hamp
  7. A little update. Having sold my CG5 2" tripod some time ago, I'd lived to really regret the move. Searches for a replacement turned up nothing but I stumbled upon stock on David Hinds' website over the weekend, don't know why I didn't look their before. Anyway, order placed and shipment notification received today. I think a 10" is back on the cards.
  8. Thanks John, I did some more calcs and realised the exit pupil was getting too large with the 10" F4, requiring shorter EP's. Great for mag but FoV was suffering. Not a problem if I wanted to invest in Ethoi and a paracorr, but that's not on the cards right now. The 8" really is looking like a solid option.
  9. Yep, that is very much on my mind Paul, especially with the uneven nature of my garden, I don't really want to be standing on a box/steps! It's a bit more weight to the 8" argument.. A bit of evening research and I discovered the TS optics PHOTON line of newtonians, they look rather nice and have better focusers than the SW equivalents. The 8" is particularly well priced, but the 10" F4 also caught my eye as the shorter tube goes some way to combat the issues discussed above and provides a larger FoV. But, will an F4 be suitable? I'm aware it will require more precise collima
  10. Yes, my garden! It's really not astro-friendly and is made up of tiers and what tiers there are aren't flat. The tripod allows me to get the AZ100 level but I fear a dob would rock and roll all over the shop.
  11. Hey Rob, it sounds like your thoughts are very much aligned with my own. It's interesting what you say about the larger scope in the wind, definitely something to consider especially with my less than ideal tripod. I feel a 10" would also require the addition of a Berlebach so the cost is doubled, say £800-£1000 for 10" OTA + BB vs <£300 for just an 8" OTA. I'm probably leaning towards an 8" right now, especially as it will provide a wider FoV without upgrading EP's and is a modest introduction to reflectors. A 200p is cheap enough and could be upgraded at a later date.
  12. Yes, a shame I sold my black version (for CG5) a few years back. Not sure I could stand a white tripod with the AZ100 on top!
  13. Ah, I'm surprised as the tripod looks quite beefy compared to the skytee II. I've seen your images of the AZ100 on the Uni, obviously it's a fair bit chunkier.
  14. Thanks John, good info. I'd be using ES 68° EP's and don't typically obsess over edge of field performance. I must have inadvertently denoted this thread for comment from John's only!?
  15. Thanks John & John. The different perspectives of those pictures really help. @johninderby, is that a Uni or a Planet? Planet I suspect. That's another consideration, I'm currently on a 1.75" steel tripod which is fine for the frac, but I wonder if it would struggle with a 10" on the AZ100? I do use it all but fully collapsed, only extending an inch or so of one or two legs to level, so may be OK.
  16. One thing I have noticed which may sway the decision: When considering what I know to be a good exit pupil for observing from my location, the extra focal length of the 10" does offer a larger image but also starts to really draw in the FoV available with my current EPs......that could get expensive not only in wider field EP's but a coma corrector too. Am I right in saying that using moderate 55°-68° EP's with the 8" would not necessitate the requirement for a coma corrector?
  17. Over recent months I seem to have come around to the idea of a reflector. I've previously resisted having just accepted that I like fracs, but I am guilty of never having owned a newt (I did once have an SCT though). Maybe it's the realisation that large refractors are just too much of a compromise or that having recently collimated a refractor, realising that it's not really a big deal. Ironic that I had to do that when it was collimation that put me off reflectors for so long. Also, there's no arguing with the £/inch of aperture equation! I also now have a capable mount in the form
  18. An OVL 27mm extra flat EP. Nicely finished but of kit with a lovely large eye lens.
  19. Hi Don, thanks for confirming . I did realise that and saw it as middle ground between the Tak and RKE. Now, if someone could make a 28mm 68° 1.25" ep, I'd be most grateful
  20. Thanks for the info @Louis D, I've seen your posts like this on CN and they're very helpful! By way of an update, I ordered the OVL 27mm Extra Flat as it seems to strike a nice balance between price and FoV, hopefully it will be comfortable enough to use for extended sessions. I'm hoping it will be of similar performance to that APM 24mm, nice and flat.
  21. I'm just glad I got the Celestron with the collimatable cell! Had it been a SW I guess I'd have been stuck. Will invest in a laser too I think. I did my best to align the focuser with the collimation ep, but there wasn't quite enough adjustment in the 3 screws to get it bang through a full rotation, but it's only a smidge out with the focuser at 180°. Having said that I rarely rotate the focuser any more as I mount the scope lower and the collimation is spot on with the focuser upright. I also checked with the diagonal in and there was no change, so hopefully I've achieved alignment t
  22. I took about a bit of astro fettling last weekend, my primary goals were to flock the dew shield of my 120mm f8 achro and to do something about the red diagonal I have which really doesn't match the scope. The diagonal turned out well, a bit of adhesive vinyl and a black paint pen have transformed the exterior whilst the inside got the gray foam side pads replaced with flock. It appears much darker to look through now, hopefully a bit of extra contrast? Whilst removing the dew shield to flock though, I soon became aware of a rattly objective. I know this is no major cause for concern
  23. Thanks Ruud, that's how I understand it. One negative I'm picking up on is the effort required to hold the specific position to achieve the effect, which may be less than ideal for longer sessions.
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