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Everything posted by John
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Poll: GOTO / Push To or Find it yourself ?
John replied to John's topic in Discussions - Scopes / Whole setups
Sounds ideal π I had a GOTO system back in the mid 1980's (Vixen Skysensor) which did similar things, so they have been around a few years. Their function and capability has been improved a huge amount today though π -
I've tended to feel that the XW's are neutral in tone. Rather similar to the Ethos, for me. I have one Delos (14mm) but can't see a strong difference in tone between it and my XW's. I don't think that I am particularly sensitive to tones though, not even particularly noticing the much talked about tones in the Radians and TV plossls when I used to own those. I would have thought that the telescope optics must make an impact. Some refractors are known to be corrected towards one part of the spectrum or another. That has got to affect the tone of the image seen at the eyepiece I would have thought, as has the diagonal being used plus the observers eye sensitivity. So many variables !
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Poll: GOTO / Push To or Find it yourself ?
John replied to John's topic in Discussions - Scopes / Whole setups
I certainly had no bias one way of the other when I posted the question and nor have I now. With hindsight the wording "Simple Question ....." was somewhat optimistic of course π It seems to me that one of the great things about astronomy is that there are so many different ways to do it - all of them "right" π Looking back at the poll (flawed though it was, I accept) the results are more or less what I expected I think. Thanks again for participating and apologies if some feathers have been ruffled - not my intention at all π I think I'll leave until another time the polls I was intending to start on: Is your attention span a) similar to a ferret, or b) similar to a goldfish ? and If we are not grinding our own mirrors and engineering our own mounts then a) we are not proper astronomers or b) we are proper astronomers, but awful crafts persons ? π- 108 replies
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Poll: GOTO / Push To or Find it yourself ?
John replied to John's topic in Discussions - Scopes / Whole setups
Many thanks again for the poll votes and / or the interesting comments posted π -
Poll: GOTO / Push To or Find it yourself ?
John replied to John's topic in Discussions - Scopes / Whole setups
The term "push to" as I use it here Mike means a system that guides the observer to a specified target though the use of directions. The slewing power is human rather than motorised as it is with a GOTO system. Apologies if the questions lack clarity. Feel free not to respond of course π -
It's an interesting question π If I lost everything that I have now and was given the cash value of replacing it all I would probably invest some of it in a 4 inch refractor and an 8 inch dobsonian. Skywatcher or Stellalyra / mira would be fine. A simple alt-az mount for the refractor. I would get some Pentax XW or Baader Morpheus eyepieces plus a zoom and a Herschel wedge for the refractor. Decent O-III and UHC filters as well. And that would be it I think. Still well in the hobby but with several Β£K in the bank for travel / other stuff π
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Poll: GOTO / Push To or Find it yourself ?
John replied to John's topic in Discussions - Scopes / Whole setups
Thanks to the 49 people who felt they could cast a vote and I can also quite understand why others felt that they could not. The process has reminded me that a poll is a rather blunt tool on a forum. -
Thank you Joe. The scope is a little Altair Starwave 70 that I picked up recently. Nothing exotic by any means but it seems to have a well figured objective, CA is kept under reasonable control and the scope seems well put together, plus it's small and light.
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A LZOS 130mm F/9.2 was one of mine. I bought one in 2016 π A top class 4 inch refractor was another. I bought one of those in 2016 as well π I've never owned an Astro Physics scope. I do have one of their 2 inch Maxbright diagonals though π
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Still having a great time here with my titchy 70mm refractor π Rigel, Eta Orionis, Alnitak, Castor and other nice pairs split. M42, M43, M78, M1 and NGC 2392 nebulae showing quite well. Comet C/2022 E3 (ZTF) spotted quite easily at 8th magnitude. Very happy with this little scope - good star test, little CA and one hand portable on the Slik Master Classic photo tripod π
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Early start this evening. Out at 5:00pm with the 70mm F/6 to have a quick look at the Moon (Petavius and rille looking nice), Jupiter and Venus against quite a bright twilight sky. Best time to see Jupiter's surface details I think. The Mare Crisium is beautifully presented this evening. Little scope on a standard photo tripod did well even at 131x π
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Wide FOV EP upgrade for StellaLyra 8"
John replied to HonestGazer's topic in Discussions - Eyepieces
Good move on good advice - it's no surprise that the first Nagler introduced was a 13mm as was the first Ethos. A very useful focal length in many scope specifications. I've really liked the Nirvana's that I've used π -
Agreed. I've been a "slow developer" in astronomy skills but I've seen folks on here move from novice to really pushing the boundaries remarkably quickly. Good for them and I hope SGL helped them in their journey π We have had quotes from notable astronomers of yore in this thread but one that puts a smile on my face is from the golfer, Lee Trevino. Back in the 1980's Trevino was playing in the British open in Scotland somewhere and he chipped from a rather nasty bunker to within an inch or two of the hole. Some wag in the gallery shouted "that was a bit lucky Lee !" and Trevino immediately quipped back "well you know, the more I practice, the luckier I seem to get !" π
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I think my observing skills peaked a while back......... at a level someway below what my scopes are capable of π I think I will remain a large man of small observational capacity, but still enjoying the hobby π
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I think there is a lot of truth in this but on forums such as this, the vast majority can only comment from the perspective of equipment that they own / use / have owned. I am guilty of it myself I'm sure, where my own equipment choices are concerned π I felt very fortunate during the period when FLO would loan me equipment to try out, compare and report back on to the forum. Not having invested in it personally (other than putting in the time to test it and write about it) created a freedom that enabled, I hope, a more dispassionate view of characteristics and performance. I know that is still happening with other folks on here, which is a great benefit to the forum π
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Great report Neil π
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Canβt determine model
John replied to Starlock Holmes's topic in Getting Started Equipment Help and Advice
That one is a Meade StarNavigator 90 I think: StarNavigator90-Audio_flyer.pdf (meadeuk.com) In the UK these people might be able to help with the issues you have with it: Meade telescopes @ Meade Instruments UK (meadeuk.com) -
Canβt determine make/model
John replied to Dkz's topic in Getting Started Equipment Help and Advice
Hello and welcome to the forum π The scope looks very, very similar to the dobsonians made by GSO and sold under a number of brandings over the years, including quite possibly the Orion (USA) dobsonians that @Louis D has linked to above. Here is a link to the (rather basic) instructions for the GSO 150mm dobsonian: N:\ει’-12\( D δ½ζ₯ζε°ζΈ )\C\580C\GSO-580C_01 Model (1) (teleskop-express.de) and here is the same for the 200mm (I can't quite work out which model you have) which is a little more comprehensive: gsdxxxc.pdf (teleskop-express.de) You will probably find that the Orion instruction manual in @Louis D's link more useful though - Orion have always provided decent instructions with their equipment, which is not something that can be said of all brands. -
I used to use a set of those with my Astro Systems 150 newtonian and then the Vixen SP102M refractor many years ago. They are very sharp eyepieces. I had to take a couple of them apart to clean the lenses and found that they were a 2+2 element design rather than the 1+3 element classic abbe ortho optical layout. Excellent performers all the same. My oldest eyepiece is probably this one which I suspect is 20 years old at least now (they were launched in 1999). More of a vintage lump than a jewel though !
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I think that was called "Meteorite Men". It starred Geoff Notkin and Steve Arnold. Here is their website: HOME | Meteorite Men My mars specimen, NWA 6963, was supplied by Steve Arnold.
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I've been interested in meteorite collecting for over 20 years now and it's amazing how much more reasonable acquiring lunar and martian specimens has become. The total known weight of these meteorites has been boosted significantly by finds over the past decade so the market price has dropped accordingly. When I first got seriously interested recognised lunar or martian material commanded a price of $800 per gram at least, often as much as twice that. Recently I've seen 1 gram specimens priced as low as $100. The UK falls are still very expensive per gram though. We don't get many !
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Over the years I've had a few collections of meteorite specimens. I have around 20 small bits and pieces currently. Nothing big though - soaks up too much of the astronomy budget !